| Carries | Crosses | Location | Design | Status | Year Built | Year Recon. | Span Len. | Total Len. | Condition | Suff. Rating | ID | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NBI report Bridgehunter | Co Rd 54A | Middle Boulder Creek | Castle Rock Pull Off | Concrete Slab | NR possible | 1917 | -- | 20.3 | 23.6 | Fair | 76.8 | BCPOS-LOWER BR |
| NBI report Bridgehunter | Co Rd 54A | Middle Boulder Creek | Castle Rock Pull Off | Steel Girder and floorbeam system | NR possible | 1917 | -- | 28.5 | 33.1 | Poor | 28.0 | BCPOS-UPPER BR |
| NBI report Bridgehunter | County Road 103 | Middle St. Vrain Creek | 100 Ft S of St Hwy 72 | Concrete Tee beam | -- | 1927 | -- | 29.2 | 35.4 | Fair | 81.0 | BC-103-4.0-MSV |
| NBI report | County Road 84W | North St. Vrain Creek | 1.0 Mi NW of St Hwy 7 | Concrete Tee beam | NR possible | 1927 | -- | 40.4 | 45.6 | Fair | 66.1 | BC-84W-1.0-NSV |
| NBI report | Public Road | Coal Creek | .25 M N of Jct US Hwy 287 | Concrete Tee beam | NR possible | 1927 | 2000 | 40.0 | 45.9 | Fair | 94.2 | LAF-PUBRD-003 |
| NBI report | SH 7 ML | DRAW | 0.35 MI E OF 75th ST | Concrete Culvert (2 spans) | -- | 1928 | -- | 16.7 | 34.8 | Fair | 59.8 | D-16-BW |
| NBI report | SH 170 ML | SOUTH BOULDER CREEK | 0.9 MI W. OF EL DORADO SP | Steel Stringer/Multi-beam or girder | -- | 1930 | 1993 | 37.1 | 41.0 | Fair | 75.5 | E-15-AH |
| NBI report | SH 119 ML | MIDDLE BOULDER CREEK | IN NEDERLAND | Concrete Culvert (2 spans) | -- | 1933 | 1987 | 14.8 | 30.8 | Fair | 73.7 | E-14-AR |
| NBI report | CR 62 (Empire Dr) | Coal Creek | 0.7 M E of St Hwy 42 | Concrete Culvert (2 spans) | NR possible | 1935 | 1955 | 16.4 | 34.1 | Fair | 86.0 | BC-62-2.1-CO |
| NBI report | County Road 132 | Boulder Creek | 75 Ft S of St Hwy 119 | Prestressed Box beam or girders - Multiple | -- | 1935 | 1984 | 29.9 | 36.7 | Fair | 67.1 | BC-132-0.1-BO |
| NBI report | SH 7 ML WBND | BOULDER CREEK | ARAPAHOE Ave IN BOULDER | Steel Stringer/Multi-beam or girder (2 spans) | NR possible | 1938 | -- | 48.9 | 102.7 | Poor | 51.9 | D-15-AQ |
| NBI report | SH 7 ML | SOUTH BOULDER CREEK | IN BOULDER | Steel Stringer/Multi-beam or girder (2 spans) | -- | 1938 | 1997 | 37.1 | 78.7 | Fair | 98.8 | D-16-J |
| NBI report | US 287 ML | DRY CREEK | Ken Pratt Blvd-Longmont | Concrete Culvert (2 spans) | -- | 1947 | 1970 | 9.8 | 21.0 | Fair | 75.2 | D-16-D |
| NBI report | SH 119 ML | NORTH BOULDER CREEK | 7.7 MI E OF JCT SH 72 | Concrete Culvert | -- | 1948 | -- | 25.3 | 25.3 | Good | 96.1 | D-15-AI |
| NBI report | SH 119 ML | NORTH BEAVER CREEK | IN NEDERLAND | Concrete Culvert (2 spans) | -- | 1948 | -- | 9.8 | 23.0 | Good | 95.1 | E-14-R |
| NBI report | US 287 ML | LEFT HAND CREEK | IN LONGMONT | Steel Stringer/Multi-beam or girder | -- | 1948 | 1970 | 39.0 | 43.0 | Fair | 84.7 | D-16-C |
| NBI report | Nelson Rd (Cr 20) | Boulder Feeder Ditch | 1.0 Mi W of Co Rd 39 | Prestressed Tee beam | -- | 1950 | 1981 | 29.5 | 32.2 | Fair | 77.2 | BC-20-3.3-ID |
| NBI report | Oxford Rd (Cr 26) | Boulder Feeder Ditch | 0.3 Mi W of Co Rd 41 | Steel Stringer/Multi-beam or girder | -- | 1950 | 1985 | 26.6 | 29.2 | Fair | 94.4 | BC-26-4.1-ID |
| NBI report | US 36 ML | CANYON CREEK | IN BOULDER | Concrete Culvert (2 spans) | -- | 1951 | -- | 16.1 | 33.5 | Fair | 86.4 | E-15-AC |
| NBI report | TABLE MESA DRIVE | US 36 ML | IN BOULDER | Steel Stringer/Multi-beam or girder (4 spans) | -- | 1951 | 1972 | 52.5 | 178.2 | Fair | 81.8 | E-16-FB |
| NBI report | US 36 ML | SOUTH BOULDER CREEK | 2.4 MI E OF JCT SH 93 | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1951 | 2015 | 49.9 | 114.8 | Good | 85.0 | E-16-FD |
| NBI report | SH 170 ML | DAVIDSON DITCH | 1.5 MI W OF JCT SH 93 | Concrete Culvert | -- | 1952 | -- | 24.0 | 24.0 | Fair | 78.7 | E-15-AB |
| NBI report | FDR 114 | MIDDLE ST. VRAIN CREEK | .2 MI W OF CO HWY 72 | Wood Stringer/Multi-beam or girder | -- | 1952 | 1995 | 27.9 | 30.8 | Good | 45.3 | 021004000001199 |
| NBI report | FDR 114 | MIDDLE ST. VRAIN CREEK | 0.94 MI WEST OF CO HWY 72 | Wood Stringer/Multi-beam or girder | -- | 1952 | 1995 | 26.9 | 30.8 | Good | 49.0 | 021004000001203 |
| NBI report | US 36 FR RD | BOULDER CREEK SR | 28th STREET IN BOULDER | Steel Stringer/Multi-beam or girder (3 spans) | NR possible | 1952 | 2005 | 35.1 | 96.5 | Fair | 89.4 | D-15-AP |
| NBI report | US 36 ML WBND | BOULDER CREEK | 28th STREET IN BOULDER | Steel Stringer/Multi-beam or girder (3 spans) | NR possible | 1952 | 2005 | 35.1 | 96.5 | Fair | 70.6 | D-15-AR |
| NBI report Bridgehunter | SH 119 ML | BOULDER CREEK | 13.7 MI E OF JCT SH 72 | Concrete Tee beam (3 spans) | NR listed | 1953 | -- | 49.9 | 100.1 | Fair | 81.6 | D-15-AK |
| NBI report | SH 119 ML | BOULDER CREEK | JUST WEST OF BOULDER | Concrete Tee beam (3 spans) | -- | 1953 | -- | 75.1 | 120.4 | Fair | 75.8 | D-15-G |
| NBI report Bridgehunter | SH 7 ML | NORTH ST VRAIN CREEK | IN LYONS | Concrete Frame | NR listed | 1955 | -- | 60.0 | 65.9 | Fair | 78.7 | D-15-A |
| NBI report | US 36 ML | LEFT HAND CREEK | 6.2 MI SO OF JCT SH 66 | Concrete Culvert (2 spans) | -- | 1955 | -- | 9.8 | 21.0 | Fair | 73.6 | D-15-X |
| NBI report | St Vrain Road CR16 | Boulder Feeder Ditch | 0.5 Mi E of Co Rd 51 | Prestressed Tee beam | -- | 1955 | 1983 | 26.6 | 28.5 | Fair | 68.0 | BC-16-1.9-ID |
| NBI report | US 36 ML | FOUR MILE CANYON CREEK | 28th ST in BOULDER | Concrete Tee beam (3 spans) | -- | 1957 | 2016 | 29.9 | 92.9 | Fair | 82.9 | D-15-B |
| NBI report | SH 119 ML NB | BEASLEY DITCH | @ 55TH ST NE OF BOULDER | Concrete Culvert | -- | 1958 | -- | 22.6 | 22.6 | Fair | 76.0 | D-16-L |
| NBI report | SH 119 N/EBND | FOUR MILE CREEK | IN BOULDER | Concrete Tee beam (3 spans) | -- | 1958 | 1971 | 36.1 | 108.9 | Fair | 94.8 | D-16-I |
| NBI report | SH 119 ML NBND | LEFT HAND CREEK | 3.6 MI NE OF JCT SH 52 | Concrete Tee beam (4 spans) | -- | 1959 | -- | 36.1 | 143.1 | Fair | 80.2 | D-16-N |
| NBI report | SH 119 NBND | DRAW | 4.5 MI NE OF JCT US 36 | Concrete Culvert (3 spans) | -- | 1959 | -- | 13.8 | 37.1 | Good | 92.2 | D-16-M |
| NBI report | SH 72 ML | MIDDLE ST VRAIN CREEK | 7 MI NORTH OF WARD | Concrete Tee beam (3 spans) | -- | 1959 | -- | 75.5 | 110.9 | Fair | 74.7 | D-14-G |
| NBI report | SH 72 ML | SOUTH ST VRAIN CREEK | 3.8 MI NORTH OF WARD | Concrete Culvert (2 spans) | -- | 1959 | -- | 10.2 | 21.7 | Fair | 84.5 | D-15-H |
| NBI report | County Road 9 | Boulder Creek | 0.3 Mi N of Co Rd 42 | Prestressed Tee beam (2 spans) | -- | 1960 | -- | 34.8 | 76.8 | Fair | 98.0 | BC-9-0.9-BO |
| NBI report | N 41st St (Cr 59) | Left Hand Creek | 325 Ft S of Co Rd 26 | Prestressed Slab | -- | 1960 | -- | 30.2 | 32.5 | Fair | 87.0 | BC-59-2.4-LT |
| NBI report | US 36 ML EBND | BOULDER CREEK | IN BOULDER | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1960 | -- | 35.1 | 96.5 | Fair | 59.7 | D-15-AX |
| NBI report | Hover Road | St. Vrain River | 100 Ft S of 3rd Avenue | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 1960 | 2002 | 47.9 | 101.1 | Fair | 95.5 | LONG-HOVER-3RD |
| NBI report | Brockway Drive | Goodhue Ditch | 0.1 Mi E of 76th Street | Concrete Slab | -- | 1962 | -- | 20.3 | 24.9 | Fair | 77.7 | BC-O-OSS-7D |
| NBI report | 30th Street | Empson Ditch | 0.59 Mi N of Baseline Rd | Prestressed Tee beam | -- | 1963 | -- | 22.3 | 25.3 | Fair | 75.4 | BOLD-07-0.59-01 |
| NBI report | EBND US 36 ML | US 36 SPUR/BASELINE RD | IN BOULDER | Steel Stringer/Multi-beam or girder | -- | 1963 | 1977 | 95.8 | 178.8 | Fair | 77.0 | D-15-AZ |
| NBI report | 30th Street | Boulder Creek | 0.79 Mi N. of Baseline Rd | Prestressed Tee beam | -- | 1963 | 1997 | 59.1 | 62.3 | Fair | 95.0 | BOLD-07-0.79-2A |
| NBI report | Folsom Street | Boulder Creek | 0.40 Mi S of Canyon Blvd | Prestressed Stringer/Multi-beam or girder | -- | 1965 | -- | 57.1 | 60.0 | Fair | 82.1 | BOLD-04-0.40-01 |
| NBI report | Juniper Avenue | Elmers Two Mile Ditch | 200 Ft E of 26th Street | Prestressed Tee beam | -- | 1965 | -- | 31.2 | 35.1 | Fair | 67.7 | BOLD-09-0.05-01 |
| NBI report | Kenosha Rd (CR 38) | Coal Creek | 0.2 Mi W of Co Rd 901 | Prestressed Tee beam | -- | 1965 | -- | 28.9 | 31.5 | Fair | 83.4 | BC-38-7.9-CO |
| NBI report | SH 52 ML | WHITE ROCK BOULDER DITCH | NIWOT AT 79th ST INT | Concrete Culvert | -- | 1965 | -- | 25.6 | 25.6 | Fair | 82.5 | D-16-Y |
| NBI report | SH 93 ML | COAL CREEK | 3.5 MI NO OF JCT SH 72 | Concrete Culvert (3 spans) | -- | 1965 | -- | 13.8 | 36.4 | Fair | 86.6 | E-15-O |
| NBI report | South Bowen Street | Left Hand Creek | At Missouri Ave | Prestressed Tee beam | -- | 1965 | -- | 27.9 | 30.8 | Poor | 94.0 | LONG-SBOW-MIS |
| NBI report | SH 7 ML EBND | BOULDER CREEK | ARAPAHOE AVENUE | Concrete Tee beam (4 spans) | -- | 1966 | 1986 | 49.9 | 154.9 | Fair | 74.4 | D-15-AV |
| NBI report | SH 128 ML | COAL CREEK | 0.4 MI E OF JCT SH 93 | Concrete Culvert (3 spans) | -- | 1967 | -- | 12.1 | 32.2 | Fair | 85.6 | E-16-HB |
| NBI report | SH 42 ML | COAL CREEK | 3.3 MI SE OF JCT SH 7 | Concrete Culvert (3 spans) | -- | 1967 | -- | 15.1 | 40.0 | Fair | 96.6 | E-16-BC |
| NBI report | SH 93 ML | DRAW | 1/2 MI S OF BOULDER LIMIT | Concrete Culvert (2 spans) | -- | 1969 | -- | 9.5 | 21.0 | Good | 84.1 | E-15-A |
| NBI report | SH 93 ML | SOUTH BOULDER CREEK | 0.4 MI N OF JCT SH 170 + | Prestressed Tee beam | -- | 1969 | -- | 72.2 | 73.2 | Fair | 99.1 | E-16-AN |
| NBI report | 3rd Avenue | Oligarchy Ditch | At Pace Street | Concrete Culvert (2 spans) | -- | 1969 | 1974 | 27.2 | 48.2 | Fair | 83.8 | LONG-3RD-PACEST |
| NBI report | 3rd Ave. EB | GW RR | .15 Mi W of Jct 119 | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1969 | 2012 | 50.9 | 123.7 | Fair | 96.0 | LONG-3RDEB-GWRR |
| NBI report | E 5th Avenue | Oligarchy Ditch | 0.1 Mi East of Fox St | Concrete Culvert | -- | 1970 | -- | 21.7 | 21.7 | Fair | 96.9 | LONG-E5TH-FOX |
| NBI report | Folsom Street | Boulder Whiterock Ditch | 20 Ft N of Pearl Street | Concrete Slab | -- | 1970 | -- | 22.0 | 24.0 | Fair | 93.1 | BOLD-04-0.39-03 |
| NBI report | Mc Sorley Lane | South Boulder Creek | 0.1 Mi W of Cherryvale Rd | Prestressed Tee beam (2 spans) | -- | 1970 | -- | 24.9 | 52.8 | Fair | 98.0 | BC-O-OSR-9B |
| NBI report | Moorhead Avenue | Skunk Creek | 0.1 Mi E of 27th Way | Concrete Culvert (2 spans) | -- | 1970 | -- | 11.8 | 24.6 | Fair | 96.5 | BOLD-12-0.15-01 |
| NBI report | Pratt Parkway | St. Vrain River | 250 Ft So of Boston Ave | Prestressed Tee beam (3 spans) | -- | 1970 | -- | 47.6 | 151.9 | Fair | 75.8 | LONG-PRAPK-BOS |
| NBI report | Spring Drive | Davidson Ditch | 0.7 Mi S of S. Boulder Rd | Concrete Slab | -- | 1970 | -- | 22.6 | 24.9 | Fair | 74.4 | BC-O-OST-7C |
| NBI report | Strath Street | Left Hand Creek | 0.2 Mi N of Niwot Rd | Concrete Culvert (2 spans) | -- | 1970 | -- | 14.1 | 28.9 | Fair | 90.4 | BC-O-OSK-9A |
| NBI report | Wildwood Road | Bear Canyon Creek | 150 Ft W of Bear Mtn. Rd | Concrete Culvert (2 spans) | -- | 1970 | -- | 12.8 | 26.9 | Good | 97.0 | BOLD-11-0.00-01 |
| NBI report | Folsom Street | Goose Creek | 300 Ft. So. of Valmont | Prestressed Tee beam | -- | 1970 | 1982 | 39.0 | 41.3 | Fair | 66.8 | BOLD-04-0.74-4A |
| NBI report | FDR 298 & BC 116 | NORTH BOULDER CREEK | 3.45 MI SW OF CO HWY 72 | Wood Stringer/Multi-beam or girder | -- | 1970 | 1995 | 25.9 | 27.9 | Fair | 59.6 | 021001000001000 |
| NBI report | SH 119 ML SBND | BEASLEY DITCH | @ 55TH ST NE OF BOULDER | Concrete Culvert | -- | 1971 | -- | 20.7 | 20.7 | Good | 76.0 | D-16-CF |
| NBI report | SH 119 SBND | BEASLEY DITCH | N.E. OF BOULDER | Concrete Culvert | -- | 1971 | -- | 20.7 | 20.7 | Fair | 80.8 | D-16-AB_MINOR |
| NBI report | SH 157 RAMP | US 36 ML | IN BOULDER | Steel Stringer/Multi-beam or girder (2 spans) | -- | 1971 | -- | 114.2 | 228.0 | Fair | 85.0 | E-16-HW |
| NBI report | Glenwood Drive | Two Mile Creek | 400 Ft W of State Hwy 36 | Concrete Culvert (2 spans) | -- | 1972 | -- | 12.1 | 25.6 | Fair | 96.6 | BOLD-38-GLENWDR |
| NBI report | US 36 ML | SUPPLY DITCH | IN LYONS | Concrete Culvert (2 spans) | -- | 1972 | -- | 10.8 | 22.6 | Fair | 70.0 | D-15-BE |
| NBI report | US 36 ML | HIGHLAND CANAL | 1.2 MI SE OF JCT SH 7 LYO | Concrete Culvert (3 spans) | -- | 1972 | -- | 14.4 | 37.7 | Fair | 85.0 | D-15-BF |
| NBI report | Cherryvale Road | Davidson Ditch | 0.5 Mi N of St Hwy 170 | Concrete Culvert | -- | 1973 | -- | 22.6 | 22.6 | Fair | 96.1 | BC-39-16.0-ID |
| NBI report | Independence Ave. | Boulder & WhiterockD | 0.4 Mi E of St Hwy 119 | Concrete Culvert | -- | 1973 | -- | 20.0 | 20.0 | Fair | 96.4 | BC-46-1.6-ID |
| NBI report | Kalmia Avenue | Elmers Two Mile Ditch | 0.1 Mi W of Folsom Street | Concrete Culvert (2 spans) | -- | 1973 | -- | 9.8 | 21.0 | Good | 87.4 | BOLD-10-0.10-01 |
| NBI report | No. 30th Street | Four Mile Creek | 300 Ft N of Palo Parkway | Prestressed Tee beam (2 spans) | -- | 1973 | -- | 33.1 | 71.9 | Fair | 75.0 | BC-30TH-0.5-FMC |
| NBI report | Second Avenue | St. Vrain Creek | 0.1 Mi So of Park Street | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1973 | -- | 49.2 | 140.8 | Poor | 64.4 | LY2-S0.1-PARK |
| NBI report | SH 157 ML NBND | SOUTH BOULDER ROAD | 0.08 MI N OF JCT US 36 | Steel Stringer/Multi-beam or girder (2 spans) | -- | 1973 | -- | 94.2 | 184.7 | Fair | 96.3 | E-16-HX |
| NBI report | SH 157 ML SBND | S BLDR Rd-TBLE MSA Dr | 0.9 MI N OF JCT US 36 | Steel Stringer/Multi-beam or girder (2 spans) | -- | 1973 | -- | 78.1 | 152.9 | Fair | 97.1 | E-16-HY |
| NBI report | SH 7 ML | NORTH ST VRAIN CREEK | 10 MI SE OF ESTES PARK | Concrete Tee beam (3 spans) | -- | 1973 | -- | 71.9 | 120.1 | Fair | 95.9 | D-14-I |
| NBI report | 3rd Ave WB | GW RR | .15 Mi W of Jct 119 | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1974 | -- | 50.9 | 123.7 | Poor | 84.2 | LONG-3RDWB-GWRR |
| NBI report | 21st Ave Eastbound | Oligarchy Ditch | 300 Ft. E of Daley Dr. | Concrete Culvert | -- | 1975 | -- | 20.7 | 20.7 | Fair | 77.6 | LONG-21ST-VIV |
| NBI report | Alpine Street | Oligarchy Ditch | 100 ft N of E 9th Ave. | Concrete Culvert (2 spans) | -- | 1975 | -- | 9.5 | 20.3 | Fair | 96.7 | LONG-ALP-E9TH |
| NBI report | SH 119 ML SBND | LEFT HAND CREEK | 3.6 MI N OF JCT SH 52 | Concrete Tee beam (3 spans) | -- | 1975 | -- | 40.0 | 123.4 | Good | 99.3 | D-16-AU |
| NBI report | Spencer Street | Oligarchy Ditch | 50 Ft So of 20th St | Concrete Culvert (2 spans) | -- | 1975 | -- | 9.8 | 20.7 | Fair | 97.0 | LONG-SPEN-21ST |
| NBI report | Sterling Drive | Left Hand Ditch | 100 Ft E of 47th Street | Concrete Culvert (2 spans) | -- | 1975 | -- | 9.5 | 20.0 | Fair | 96.9 | BOLD-33-STERDR |
| NBI report | Twin Lakes Road | BLDR and Whiterock Ditch | 0.2 Mi E of 63rd Street | Concrete Culvert (2 spans) | -- | 1975 | -- | 9.8 | 20.7 | Fair | 96.9 | BC-O-OSO-8A |
| NBI report | South Boulder Road | Viele Channel (Ditch) | 0.6 Mi E of US Hwy 36 | Concrete Culvert (3 spans) | -- | 1975 | 1986 | 16.1 | 42.7 | Fair | 94.5 | BC-60-0.3-VC-1 |
| NBI report | County Road 901 | Boulder Creek | 0.3 Mi N of St Hwy 52 | Prestressed Tee beam (2 spans) | -- | 1976 | -- | 61.7 | 126.3 | Fair | 86.7 | BC-901-11.6-BO |
| NBI report | Woodland Rd (CR4) | Highland Ditch | 1.3 Mi E of 75th Street | Concrete Culvert | -- | 1976 | -- | 24.6 | 24.6 | Fair | 93.0 | BC-4-1.3-ID |
| NBI report | 120TH STREET | Coal Creek | 0.25 M S of S. Boulder Rd | Concrete Culvert (3 spans) | -- | 1977 | -- | 16.4 | 44.9 | Fair | 76.4 | LAF-120TH-002 |
| NBI report | 6th Street | Boulder Creek | 0.1 Mi So of Canyon Blvd | Prestressed Tee beam (2 spans) | -- | 1978 | -- | 59.7 | 122.1 | Fair | 75.0 | BOLD-01-0.05-01 |
| NBI report | 9th Street | Boulder Creek | 0.08 Mi N of Arapahoe Ave | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 1978 | -- | 69.2 | 145.0 | Fair | 94.0 | BOLD-02-0.08-01 |
| NBI report | N. 75th St (Cr 25) | Boulder Creek | 0.1 Mi S of Jay Road | Prestressed Tee beam (2 spans) | -- | 1978 | -- | 53.2 | 111.9 | Fair | 95.5 | BC-25-10.8-BO |
| NBI report | SH 157 ML | BEAR CANYON CREEK | NEAR COLORADO AVE. | Concrete Culvert (3 spans) | -- | 1978 | -- | 17.1 | 46.9 | Fair | 68.1 | D-16-CR |
| NBI report | SH 157 ML | SKUNK CREEK | IN BOULDER | Concrete Culvert (2 spans) | -- | 1978 | -- | 13.8 | 28.5 | Fair | 79.0 | D-16-CS |
| NBI report | Colorado Avenue | Skunk Creek | At 38th Street | Concrete Culvert (2 spans) | -- | 1979 | -- | 14.8 | 30.8 | Fair | 96.2 | BOLD-37-COLOAVE |
| NBI report | County Road 31 | St. Vrain Creek | 0.6 Mi S of Co Rd 10 | Prestressed Tee beam (2 spans) | -- | 1979 | -- | 53.5 | 115.8 | Fair | 79.0 | BC-31-3.9A-SV |
| NBI report | SH 72 ML | SOUTH BOULDER CREEK | IN PINECLIFF | Steel Stringer/Multi-beam or girder | -- | 1979 | -- | 89.9 | 92.9 | Fair | 91.9 | E-15-AF |
| NBI report | 48th Street | Goose Creek | Just N. of Pearl St | Concrete Culvert (3 spans) | -- | 1980 | -- | 15.1 | 42.7 | Good | 98.0 | BOLD-49-48THST |
| NBI report | Aurora Avenue | Gregory Creek | 15 Ft. W of 6th Street | Concrete Culvert (2 spans) | -- | 1980 | -- | 9.8 | 20.3 | Good | 90.7 | BOLD-35-AURORAA |
| NBI report | Baseline Road | South Boulder Creek | 0.1 Mi W of Cherryvale Rd | Prestressed Tee beam | -- | 1980 | -- | 38.1 | 43.3 | Fair | 94.6 | BC-56-0.5-SB |
| NBI report | Baseline Road | Bear Canyon Creek | 300 ft E of Meadow Dr | Concrete Culvert (2 spans) | -- | 1980 | -- | 19.4 | 40.4 | Good | 95.3 | BOLD-50-BASELN |
| NBI report | Boulder Hills Dr | Boulder Feeder Ditch | 50 Ft E of Stirrup Lane | Prestressed Tee beam | -- | 1980 | -- | 41.3 | 45.9 | Fair | 89.4 | BC-O-OSJ-9A |
| NBI report | County Road 33 | Left Hand Creek | 0.3 M N of Oxford Rd (26) | Concrete Culvert (3 spans) | -- | 1980 | -- | 15.7 | 43.3 | Fair | 96.3 | BC-33-1.2-LT |
| NBI report | Pratt Parkway | BNRR and 1st Avenue | 0.2 Mi N of Boston Ave | Prestressed Stringer/Multi-beam or girder (3 spans) | -- | 1980 | -- | 86.6 | 258.9 | Fair | 77.5 | LONG-PRAPK-1ST |
| NBI report | SB Table Mesa Dr. | Bear Creek | Harvard Ln & SB Table | Concrete Culvert (2 spans) | -- | 1980 | -- | 11.8 | 24.6 | Fair | 93.9 | BOLD-36-TABMSAD |
| NBI report | Hygiene Rd (Cr 10) | St. Vrain Creek | 1.0 Mi W of Co Rd 31 | Prestressed Stringer/Multi-beam or girder | -- | 1981 | -- | 98.8 | 103.7 | Fair | 98.5 | BC-10-3.1-SV |
| NBI report | Pearl Parkway | Left Hand Ditch | 500 Ft W of Foothills Pky | Concrete Culvert (3 spans) | -- | 1981 | -- | 12.8 | 34.1 | Fair | 97.0 | BOLD-34-PEARLPW |
| NBI report | SH 157 ML | BNSF RR | IN BOULDER | Prestressed Box Beam or girders - Single or Spread (3 spans) | -- | 1981 | -- | 77.4 | 185.4 | Fair | 50.8 | D-16-CV |
| NBI report | SH 157 ML | BOULDER CREEK | JUST N. OF HWY 7 | Prestressed Stringer/Multi-beam or girder (4 spans) | -- | 1981 | -- | 104.0 | 367.5 | Fair | 84.2 | D-16-CW |
| NBI report | SH 157 ML | WALNUT STREET | IN BOULDER | Concrete Tee beam (3 spans) | -- | 1981 | -- | 66.6 | 151.9 | Fair | 92.7 | D-16-CX |
| NBI report | WILD BASIN ROAD | NORTH ST. VRAIN CREEK | HWY 7 TO WILD BASIN TRAIL | Prestressed Tee beam | -- | 1982 | -- | 28.9 | 28.9 | Good | 90.0 | 1520011P0000000 |
| NBI report | WILD BASIN ROAD | NORTH ST. VRAIN CREEK | 2.1 MILES FROM PARK BOUND | Prestressed Tee beam | -- | 1982 | -- | 24.9 | 24.9 | Fair | 84.0 | 1520012P0000000 |
| NBI report | Bent Way | Dry Creek No. 1 | 0.1 Mi E of Hover Road | Concrete Culvert (2 spans) | -- | 1983 | -- | 14.1 | 28.9 | Fair | 82.7 | LONG-BENT-HOVER |
| NBI report | SH170 ML(McCaslin) | US 36 ML | 3.9 MI E OF JCT SH 93 | Prestressed Stringer/Multi-beam or girder (2 spans) | -- | 1983 | 2016 | 95.1 | 192.6 | Fair | 93.3 | E-16-KZ |
| NBI report | N. 95th St (Cr 19) | Liggett Ditch | 1.2 Mi S of Co Rd 38 | Concrete Culvert | -- | 1984 | -- | 22.3 | 22.3 | Good | 94.2 | BC-19-14.6-ID |
| NBI report | Price/Frontage Rds | Dry Creek | S. Sunset St & Hwy 11 | Concrete Culvert (2 spans) | -- | 1984 | -- | 9.8 | 21.0 | Fair | 81.6 | LONG-PRICE-FLO |
| NBI report | 17th Street | Boulder Creek | 0.4 Mi So of Canyon Blvd. | Prestressed Box beam or girders - Multiple | -- | 1985 | -- | 99.1 | 104.7 | Fair | 95.0 | BOLD-03-0.36-1A |
| NBI report | Flatiron Parkwy | Dry Creek | 0.1 Mi E of N 55th Street | Prestressed Tee beam | -- | 1985 | -- | 57.7 | 68.9 | Fair | 97.0 | BOLD-05-0.10-01 |
| NBI report | Niwot Road (Cr 34) | Dry Creek | 0.7 Mi E of St Hwy 119 | Concrete Culvert (2 spans) | -- | 1985 | -- | 13.8 | 28.9 | Fair | 96.3 | BC-34-0.7-DC |
| NBI report | North 55th Street | Boulder Creek | 0.1 Mi N of Flatiron Pkwy | Prestressed Stringer/Multi-beam or girder (2 spans) | -- | 1985 | -- | 94.2 | 200.5 | Fair | 95.8 | BOLD-08-0.30-02 |
| NBI report | SH 157 ML | PEARL STREET | 2.9 MI N OF US 36 | Prestressed Stringer/Multi-beam or girder | -- | 1985 | -- | 149.9 | 153.9 | Fair | 85.0 | D-16-CU |
| NBI report | SH 7 ML | BEAR CANYON CREEK | JCT 157 & ARAPAHOE | Concrete Culvert (7 spans) | -- | 1985 | -- | 14.1 | 86.3 | Fair | 82.9 | D-16-DB |
| NBI report | US 287 ML | BOULDER CREEK | 3 MI N OF JCT SH 7 | Prestressed Stringer/Multi-beam or girder (3 spans) | -- | 1985 | -- | 73.5 | 221.1 | Fair | 99.2 | D-16-DA |
| NBI report | Hover Road | Dry Creek No. 1 | 0.2 Mi S of Nelson Road | Concrete Culvert (3 spans) | -- | 1985 | 2017 | 14.4 | 44.9 | Good | 79.3 | LONG-HOVER-NEL |
| NBI report | 47th Street | South Goose Creek | 40 Ft N of Pearl Parkway | Concrete Culvert (4 spans) | -- | 1986 | -- | 9.5 | 43.0 | Fair | 96.4 | BOLD-19-0.01-01 |
| NBI report | 48th CT | S. Goose Creek | 30 Ft N of Pearl Parkway | Concrete Culvert (3 spans) | -- | 1986 | -- | 16.1 | 43.6 | Good | 97.0 | BOLD-20-0.01-01 |
| NBI report | Cherryvale Road | Davidson Ditch | 0.9 Mi S of US Hwy 36 | Metal Culvert | -- | 1986 | -- | 22.6 | 22.6 | Fair | 63.3 | BC-39-15.5-ID |
| NBI report | N. 61st Street | Boulder Creek | 1.0 Mi So of Jay Road | Prestressed Box beam or girders - Multiple (2 spans) | -- | 1986 | -- | 44.0 | 93.8 | Fair | 77.0 | BC-39-9.9-BO-1 |
| NBI report | Pearl Parkway | S. Goose Creek Drainage | At 49th Street | Concrete Culvert (3 spans) | -- | 1986 | -- | 27.9 | 75.1 | Fair | 85.5 | BOLD-18-1.83-01 |
| NBI report | Pearl Parkway | North Goose Creek | 0.6 M E of Foothills Pkwy | Concrete Culvert (3 spans) | -- | 1986 | -- | 14.1 | 43.6 | Fair | 94.4 | BOLD-18-2.21-02 |
| NBI report | S Boulder Road | South Boulder Creek | 0.4 Mi E of US Hwy 36 | Prestressed Tee beam (2 spans) | -- | 1986 | -- | 55.4 | 120.7 | Good | 96.5 | BC-60-0.4-SB-1 |
| NBI report | SH 157 ML | SOUTH GOOSE CREEK | 0.03 MI N OF PEARL ST | Concrete Culvert (4 spans) | -- | 1986 | -- | 10.2 | 44.3 | Fair | 65.1 | D-16-CN |
| NBI report | SH 157 ML | NORTH GOOSE CREEK | 0.05 MI N OF PEARL ST. | Concrete Culvert (7 spans) | -- | 1986 | -- | 7.9 | 62.3 | Fair | 82.5 | D-16-CZ |
| NBI report | 120TH STREET | Rock Creek | 0.5 Mi S of S. Boulder Rd | Concrete Culvert (2 spans) | -- | 1986 | 2000 | 20.0 | 41.3 | Good | 76.0 | LAF-120TH-001B |
| NBI report | Hygiene Rd (Cr 10) | Boulder Feeder Ditch | 0.7 Mi E of US Hwy 36 | Concrete Frame | -- | 1987 | -- | 26.9 | 28.9 | Good | 96.8 | BC-10-0.8-ID1 |
| NBI report | SH 157 ML | WONDERLAND CREEK | IN BOULDER | Concrete Culvert (3 spans) | -- | 1987 | -- | 18.7 | 58.4 | Fair | 78.3 | D-16-DD |
| NBI report | SH 157 ML | BOULDER, WHITEROCK DITCH | IN BOULDER | Concrete Culvert (2 spans) | -- | 1987 | -- | 9.8 | 21.0 | Fair | 78.3 | D-16-DE |
| NBI report | Arapahoe Avenue | Boulder Creek | 0.08 Mi E of S. Broadway | Prestressed Box beam or girders - Multiple | -- | 1988 | -- | 84.0 | 88.9 | Fair | 77.5 | BOLD-16-0.08-1A |
| NBI report | County Road 38 | Boulder Creek | 1.5 Mi W of Co Rd 901 | Prestressed Tee beam (2 spans) | -- | 1988 | -- | 44.9 | 96.5 | Fair | 96.7 | BC-38-6.7-BO1 |
| NBI report | County Road 80 | North St. Vrain Creek | 20 Ft S of US Hwy 36 | Prestressed Box Beam or girders - Single or Spread | -- | 1988 | -- | 54.5 | 61.4 | Fair | 90.8 | BC-80-0.1-NSV1 |
| NBI report | County Road 80 | North St. Vrain Creek | 0.8 Mi W of US Hwy 36 | Prestressed Box Beam or girders - Single or Spread | -- | 1988 | -- | 47.6 | 50.2 | Fair | 77.2 | BC-80-0.8-NSV1 |
| NBI report | Kingsridge Blvd. | Wonderland Creek | 0.2 Mi N of Valmont Drive | Concrete Culvert (7 spans) | -- | 1988 | -- | 16.4 | 87.9 | Fair | 96.9 | BOLD-18-0.1-01 |
| NBI report | Marshall Rd(Cr 51) | South Boulder Creek | 0.5 Mi N of St Hwy 170 | Wood Slab | -- | 1988 | -- | 36.1 | 38.1 | Good | 95.9 | BC-51-11.0-SB1 |
| NBI report | N. 119th St (Cr 3) | St. Vrain Creek | 0.5 Mi N of Co Rd 20 | Steel Stringer/Multi-beam or girder (2 spans) | -- | 1988 | -- | 59.4 | 127.0 | Good | 95.5 | BC-3-7.5-SV1 |
| NBI report | Prospect Road CR24 | Boulder Feeder Ditch | 0.3 Mi E of Co Rd 57 | Concrete Frame | -- | 1988 | -- | 28.2 | 31.8 | Fair | 97.0 | BC-24-0.3-ID1 |
| NBI report | SH 157 ML | SH 119 ML | IN BOULDER | Prestressed Stringer/Multi-beam or girder (2 spans) | -- | 1988 | -- | 102.4 | 198.5 | Fair | 90.2 | D-16-DF |
| NBI report | SH 157 ML | BNSF RR | IN BOULDER | Prestressed Stringer/Multi-beam or girder (3 spans) | -- | 1988 | -- | 121.1 | 339.6 | Fair | 93.1 | D-16-DG |
| NBI report | SH 157 NBND | FOUR MILE CANYON CREEK | TWO MILES N OF BOULDER CI | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 1988 | -- | 64.3 | 132.2 | Fair | 99.0 | D-16-DJ |
| NBI report | SH 157 SBND | FOUR MILE CANYON CREEK | .25 MI S OF SH119 INTSN | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 1988 | -- | 64.3 | 132.2 | Fair | 96.9 | D-16-DK |
| NBI report | 15th Avenue | Oligarchy Ditch | 100 Ft W of Lamplighte Dr | Concrete Frame | -- | 1989 | -- | 20.3 | 21.7 | Fair | 97.0 | LONG-15TH-LAMP |
| NBI report | 47TH STREET | SH 157 ML | NEAR SH 119 IN BOULDER | Prestressed Stringer/Multi-beam or girder (4 spans) | -- | 1989 | -- | 119.1 | 389.8 | Fair | 96.4 | D-16-DL |
| NBI report | FDR 112 | SOUTH ST VRAIN CREEK | 5.75 MI WEST OF CO HWY 72 | Prestressed Slab | -- | 1989 | -- | 40.4 | 41.3 | Good | 80.0 | 021004000001202 |
| NBI report | N. 95th St (CR10) | Highland Ditch | 0.5 Mi N of Woodland | Concrete Frame | -- | 1989 | -- | 20.3 | 22.6 | Good | 96.1 | BC-19-1.5-ID1 |
| NBI report | Arapahoe Avenue | Boulder Creek | 50 Ft S of Canyon Blvd | Prestressed Box beam or girders - Multiple | -- | 1990 | -- | 89.9 | 93.2 | Fair | 85.9 | BOLD-16-1.3-02A |
| NBI report | Boston Ave (Cr 18) | St. Vrain Creek | 0.1 Mi E of Co Rd 15 | Prestressed Tee beam (3 spans) | -- | 1990 | -- | 49.9 | 150.3 | Fair | 89.9 | BC-18-0.1-SV1 |
| NBI report | County Road 130 | Middle Boulder Creek | 2.5 Mi W of St Hwy 72 | Prestressed Box Beam or girders - Single or Spread | -- | 1990 | -- | 37.4 | 42.0 | Fair | 60.1 | BC-130-2.5-MB1 |
| NBI report | County Road 84S | South St. Vrain Creek | 0.1 Mi S of St Hwy 7 | Prestressed Box Beam or girders - Single or Spread | -- | 1990 | -- | 52.5 | 58.1 | Fair | 98.9 | BC-84S-0.1-SSV1 |
| NBI report | Hover Road | Oligarchy Ditch | 100 Ft S of 20th Street | Concrete Frame | -- | 1990 | -- | 28.9 | 30.8 | Fair | 84.0 | LONG-HOVER-20TH |
| NBI report | SH 7 ML | COAL CREEK | 1.7 MI E OF JCT US 287 | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 1990 | -- | 70.9 | 146.0 | Good | 90.6 | D-16-DM |
| NBI report | US 287 ML | DRY CREEK | 2.7 MI NO OF JCT SH 52 | Concrete Culvert (2 spans) | -- | 1990 | -- | 19.0 | 39.0 | Fair | 94.4 | D-16-DN |
| NBI report | US 287 ML | DRAW | 0.9 MI S OF JCT SH 52 | Concrete Culvert (2 spans) | -- | 1990 | -- | 12.1 | 24.9 | Good | 78.2 | D-16-DO |
| NBI report | C. R. 41 (63rd St) | St. Vrain Creek | 0.5 Mi N of Co Rd 10 | Prestressed Box Beam or girders - Single or Spread | -- | 1991 | -- | 53.8 | 59.1 | Fair | 91.5 | BC-41-1.4-SV1 |
| NBI report | County Road 26 | Left Hand Creek | 0.6 Mi W of Co Rd 33 | Prestressed Box Beam or girders - Single or Spread | -- | 1991 | -- | 53.8 | 60.0 | Good | 99.0 | BC-26-5.3-LT1 |
| NBI report Bridgehunter | County Road 71 | North St. Vrain Creek | 30 Ft So of US Hwy 36 | Wood Arch - Thru | -- | 1991 | -- | 66.9 | 76.1 | Good | 92.0 | BC-71-2.4-NSV1 |
| NBI report | Dry Creek Drive | Dry Creek No. 1 | 0.1 Mi So of Bent Way | Concrete Frame | -- | 1991 | -- | 29.9 | 32.2 | Good | 96.1 | LONG-DRYCR-BENT |
| NBI report | 2nd Avenue | Coal Creek | 0.2 Mi South of Williams | Concrete Slab (2 spans) | -- | 1992 | -- | 29.9 | 66.3 | Good | 75.8 | SUPER-2ND-AVE |
| NBI report | N 81st St (Cr 31) | Left Hand Creek | 0.1 M N of Oxford Rd (26) | Prestressed Box Beam or girders - Single or Spread | -- | 1992 | -- | 49.9 | 56.1 | Good | 98.0 | BC-31-8.6-LT1 |
| NBI report | SH 93 ML | PEDESTRIAN UNDERPASS | BROADWAY AT COLLEGE BLVD | Concrete Culvert | -- | 1992 | -- | 26.2 | 26.2 | Good | 79.6 | D-15-BP |
| NBI report | County Road 103 | Middle St. Vrain Creek | 0.5 Mi SW of St Hwy 7 | Prestressed Slab | -- | 1993 | -- | 40.0 | 43.3 | Fair | 92.5 | BC-103-0.5-MSV1 |
| NBI report | County Road 103 | Middle St. Vrain Creek | 200 Ft S of Raymond Store | Prestressed Slab | -- | 1993 | -- | 39.7 | 43.3 | Good | 92.5 | BC-103-1.3-MSV1 |
| NBI report | Dillon Road | Coal Creek & Ped Tra | 0.5 Mi E of McCaslin Blvd | Concrete Frame (2 spans) | -- | 1993 | -- | 21.7 | 43.3 | Fair | 76.9 | LOUIS-DILLRD |
| NBI report | N 49th St (Cr 51) | Left Hand Creek | 0.5 Mi N of Co Rd 34 | Prestressed Box Beam or girders - Single or Spread | -- | 1993 | -- | 54.1 | 58.1 | Good | 99.0 | BC-51-5.3-LT1 |
| NBI report | US 287 | DRAW | JUST N OF NW PKWY | Concrete Culvert (2 spans) | -- | 1993 | -- | 13.1 | 24.9 | Good | 67.0 | E-16-NG |
| NBI report | US 287 NBND | ROCK CREEK | 0.4 MI S of NW PKWY | Prestressed Stringer/Multi-beam or girder | -- | 1993 | -- | 108.3 | 111.9 | Good | 85.0 | E-16-MT |
| NBI report | US 36 WBND SPUR | US 36 SPUR/BASELINE RD | S end of BOULDER | Prestressed Box beam or girders - Multiple (2 spans) | -- | 1993 | -- | 155.2 | 314.0 | Good | 100.0 | D-15-BO |
| NBI report | 30th Street | North Goose Creek | At Mapleton & 30th St | Concrete Frame (2 spans) | -- | 1994 | -- | 27.9 | 59.7 | Fair | 91.0 | BOLD-07-1.72-04 |
| NBI report | Airport Road | Dry Creek | 0.1 Mi N of Buckthorn Dr. | Concrete Culvert (4 spans) | -- | 1994 | -- | 12.1 | 52.5 | Fair | 96.6 | LONG-AIRPT-BUCK |
| NBI report | Broadway | Four Mile Creek | At Rosewood Avenue | Concrete Culvert | -- | 1994 | -- | 20.3 | 20.3 | Fair | 80.3 | BOLD-BRDWAY-4MI |
| NBI report | County Road 124E | North Boulder Creek | 0.1 Mi NE of St Hwy 7 | Concrete Frame | -- | 1994 | -- | 27.9 | 29.5 | Fair | 98.0 | BC-124E-0.1-NB1 |
| NBI report | County Road 128E | North Boulder Creek | 3.9 Mi E of St Hwy 72 | Concrete Frame | -- | 1994 | -- | 32.5 | 34.5 | Fair | 98.0 | BC-128E-3.9-NB1 |
| NBI report | CR124E-Hummer Dr. | North Boulder Creek | 1.2 Mi NE of St Hwy 73 | Concrete Frame | -- | 1994 | -- | 27.9 | 29.5 | Fair | 91.1 | BC-124E-1.2-NB1 |
| NBI report | EMMA ST. | US 287 ML | IN LAFAYETTE | Prestressed Box beam or girders - Multiple (2 spans) | -- | 1994 | -- | 98.1 | 203.1 | Good | 93.9 | E-16-PQ |
| NBI report | US 287 ML | DRAW | IN BOULDER COUNTY | Concrete Culvert (3 spans) | -- | 1994 | -- | 9.5 | 32.2 | Good | 71.7 | E-16-NH |
| NBI report | US 287 ML SBND | ROCK CREEK | 2.2 MI NO OF JCT SH 121 | Prestressed Stringer/Multi-beam or girder | -- | 1994 | -- | 108.6 | 111.9 | Good | 95.3 | E-16-MU |
| NBI report | Pike Road | Left Hand Creek | 0.2 Mi E of Sunset St | Concrete Culvert (2 spans) | -- | 1994 | 2004 | 26.2 | 44.6 | Good | 99.3 | LONG-PIKE-HOVER |
| NBI report | County Road 1 | Big Dry Creek | 0.3 Mi N of Co Rd 20.5 | Prestressed Slab | -- | 1995 | -- | 28.5 | 30.8 | Fair | 93.5 | WEL001.0-020.5A |
| NBI report | Martin Drive | Bear Crk and Bike Path | 300 Ft. E of 36th St. | Concrete Culvert (2 spans) | -- | 1995 | -- | 24.0 | 32.8 | Fair | 84.9 | BOLD-22-0.44-01 |
| NBI report | McCaslin Blvd | Coal Creek | 0.3 Mi S of US Hwy 36 | Prestressed Box Beam or girders - Single or Spread | -- | 1995 | -- | 76.4 | 80.1 | Good | 95.3 | SUPER-MCCASLINA |
| NBI report | Moorhead Avenue | Bear Creek: Bike Path | 0.4 Mi NW of Table Mesa D | Concrete Culvert | -- | 1995 | -- | 31.2 | 31.2 | Good | 96.8 | BOLD-12-0.78-02 |
| NBI report | 55th Street | Empson Ditch | 250 Ft N of Penn. Ave. | Prestressed Box Beam or girders - Single or Spread | -- | 1996 | -- | 43.6 | 48.9 | Fair | 84.6 | BOLD-08-0.49-1A |
| NBI report | County Road 35 | St. Vrain Creek | 0.2 Mi S of Co Rd 10 | Steel Stringer/Multi-beam or girder (2 spans) | -- | 1996 | -- | 44.3 | 94.5 | Fair | 98.0 | BC-35-0.2-SV1 |
| NBI report | Flagstaff Rd CR56 | Hillside Slide | 1.0 Mi W of Baseline Rd | Concrete Slab (6 spans) | -- | 1996 | -- | 29.9 | 170.0 | Good | 75.4 | BC-56-00.9-SS |
| NBI report | Lookout Road | Boulder Cr. Supply Ditch | 0.28 Mi E of Spine Road | Concrete Culvert | -- | 1996 | -- | 20.3 | 20.3 | Good | 94.1 | BOLD-17-0.28-1A |
| NBI report | Lookout Road | Boulder & Whiterock | 0.32 Mi Eof Spine Street | Concrete Culvert | -- | 1996 | -- | 20.7 | 20.7 | Good | 94.1 | BOLD-17-0.32-2A |
| NBI report | Mohawk Drive | Bear Crk and Bike Path | 0.25 Mi No of Baseline Rd | Concrete Culvert | -- | 1996 | -- | 21.0 | 21.0 | Good | 97.8 | BOLD-21-1.20-01 |
| NBI report | SOUTH BOULDER RD | DRAINAGE DITCH AR | IN LAFAYETTE | Concrete Culvert | -- | 1996 | -- | 20.0 | 20.0 | Good | 91.5 | E-16-PO |
| NBI report | Sunset Way | Dry Creek | 20 Ft SW of Korte Way | Concrete Frame | -- | 1996 | -- | 34.5 | 35.8 | Fair | 97.0 | LONG-SUNS-KORT |
| NBI report | US 287 ML | COAL CREEK | IN BOULDER COUNTY | Prestressed Stringer/Multi-beam or girder (2 spans) | -- | 1996 | -- | 69.2 | 141.1 | Good | 98.9 | E-16-PN |
| NBI report | County Road 47 | St. Vrain Supply Canal | 2.7 Mi N of St Hwy 66 | Prestressed Box Beam or girders - Single or Spread | -- | 1997 | -- | 49.2 | 54.1 | Good | 80.2 | BC-47-0.1-ID1 |
| NBI report | Fordham Street | Dry Creek | 0.3 Mi So of Nelson Road | Concrete Frame | -- | 1997 | -- | 29.9 | 31.8 | Fair | 72.5 | LONG-FORD-QUAIL |
| NBI report | Gilpin Drive | Bear Canyon Creek | 350 ft S of Evans Dr | Concrete Culvert | -- | 1997 | -- | 20.3 | 20.3 | Good | 97.0 | BOLD-47-GLPNDR |
| NBI report | US 287 ML | LOWER BOULDER DITCH | 3.4 MI N OF LAFAYETTE | Concrete Culvert | -- | 1997 | -- | 20.3 | 20.3 | Good | 83.4 | D-16-DP |
| NBI report | Harvard Street | Oligarchy Ditch | 50 Ft So. of N. Shore Dr. | Concrete Frame | -- | 1998 | -- | 24.0 | 25.9 | Good | 94.5 | LONG-HARD-NSHOR |
| NBI report | Indiana Avenue | Rock Creek | 150 Ft N of Coalton D | Concrete Culvert (2 spans) | -- | 1999 | -- | 14.1 | 28.5 | Fair | 84.5 | SUPER-INDIANA |
| NBI report | Rock Creek Pkwy. | Rock Creek | 0.3 Mi N of Coalton D | Concrete Culvert (4 spans) | -- | 1999 | -- | 23.6 | 101.7 | Fair | 88.9 | SUPER-ROCKCKBL |
| NBI report | SH 170 ML | COMMUNITY DITCH | E ENT ELDORADO STATE PARK | Steel Stringer/Multi-beam or girder | -- | 1999 | -- | 40.0 | 43.0 | Fair | 61.4 | E-15-AA |
| NBI report | US 287 ML | HIGHLAND DITCH | 2.1 MI NO OF JCT SH 66 | Concrete Culvert (2 spans) | -- | 1999 | -- | 15.4 | 31.8 | Fair | 81.6 | D-16-BC |
| NBI report | Valmont Rd | Boulder Creek | 200 Ft. E of 55th Street | Prestressed Box beam or girders - Multiple (2 spans) | -- | 1999 | -- | 89.9 | 189.0 | Good | 96.5 | BC-52-1.9-BO1 |
| NBI report | 17th Avenue | Spring Gulch | 750 Ft E of Whitehall Dr | Concrete Culvert (3 spans) | -- | 2000 | -- | 15.7 | 48.6 | Good | 95.4 | LONG-17TH-WHTHL |
| NBI report | Coalton Drive | Rock Creek | 0.15 Mi East of McCaslin | Concrete Culvert (3 spans) | -- | 2000 | -- | 16.1 | 50.2 | Fair | 84.1 | SUPER-COALTON |
| NBI report | County Road 96 | South St. Vrain Creek | 100 Ft. W of St Hwy 72 | Steel Stringer/Multi-beam or girder | -- | 2000 | -- | 20.3 | 24.9 | Fair | 75.4 | BC-96-0.1-SSV1 |
| NBI report | Deerwood Drive | Oligarchy Ditch | 20 Ft W of Co Rd 1 | Concrete Culvert (2 spans) | -- | 2000 | -- | 12.1 | 24.9 | Fair | 96.9 | LONG-DRWD-SMRHK |
| NBI report | Horizon Avenue | Rock Creek | .1 MI East 120th | Concrete Culvert (4 spans) | -- | 2000 | -- | 20.0 | 76.1 | Good | 97.0 | LAF-HORIZ-004 |
| NBI report | Olympia Avenue | Spring Gulch | 200 feet E of Boise Court | Concrete Culvert (3 spans) | -- | 2000 | -- | 14.1 | 44.0 | Good | 97.9 | LONG-OLYM-BOISE |
| NBI report | Pace Street | Spring Gulch | .15 Mi. N of Wyndemere | Concrete Culvert (3 spans) | -- | 2000 | -- | 14.4 | 45.3 | Good | 99.2 | LONG-PACE-WYDMR |
| NBI report | Rock Creek Pkwy | Community Ditch | 300 Ft East of McCaslin | Concrete Frame | -- | 2000 | -- | 32.2 | 35.1 | Fair | 84.7 | SUPER-ROKCKBL-B |
| NBI report | Rogers Road | Lykin Gulch | 0.25 Mi W of Airport Rd | Concrete Culvert (6 spans) | -- | 2000 | -- | 22.6 | 162.4 | Fair | 80.3 | LONG-ROGR-AIRRD |
| NBI report | South Sunset St. | Left Hand Creek | 200 ft N of Creekside Dr | Concrete Frame (3 spans) | -- | 2000 | -- | 21.3 | 68.9 | Good | 100.0 | LONG-SNST-CRKSD |
| NBI report | US 36 ML | ST VRAIN CREEK | IN LYONS | Prestressed Box beam or girders - Multiple (2 spans) | -- | 2000 | -- | 58.4 | 121.1 | Good | 95.8 | D-15-I |
| NBI report | 27th Street | Goose Creek | 50 ft N of Mapleton Ave | Prestressed Box Beam or girders - Single or Spread | -- | 2001 | -- | 63.3 | 68.2 | Good | 89.0 | BOLD-39-27THST |
| NBI report | US 36 ML | RAMP B & BIKEPATH | 1.5 MI E. OF SUPERIOR | Prestressed Box Beam or girders - Single or Spread | -- | 2001 | 2013 | 53.2 | 56.8 | Good | 89.0 | E-16-HK |
| NBI report | Airport Road CR25 | Left Hand Creek | 50 Ft N of St Hwy 119 | Prestressed Box beam or girders - Multiple | -- | 2003 | -- | 65.0 | 68.6 | Fair | 98.3 | BC-25-4.7-LT1 |
| NBI report | SH 119 ML EBND | ST VRAIN RIVER | NEAR LONGMONT | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 2003 | -- | 143.4 | 290.4 | Good | 98.7 | D-16-DX |
| NBI report | SH 119 ML WBND | ST. VRAIN RIVER | NEAR LONGMONT | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 2003 | -- | 143.4 | 290.4 | Fair | 98.7 | D-16-DY |
| NBI report | SH 119 ML, E.Bnd | LEFT HAND CREEK | 3.6 MI NE OF SH 52 | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 2003 | -- | 85.6 | 174.2 | Good | 98.7 | D-16-DV |
| NBI report | SH 119 ML, W.Bnd | LEFTHAND CREEK | 3.6 MI NE OF SH 52 | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 2003 | -- | 85.6 | 174.2 | Good | 98.7 | D-16-DW |
| NBI report | E 9th Avenue | Oligarchy Ditch | 100 ft E of Alpine Street | Concrete Culvert (3 spans) | -- | 2004 | -- | 24.0 | 82.4 | Good | 95.1 | LONG-E9TH-ALP-A |
| NBI report | Grandview Meadow D | Dry Creek | 0.4 Mi So of Nelson Rd | Concrete Frame | -- | 2004 | -- | 20.0 | 21.7 | Good | 99.7 | LONG-GRAND-CLBN |
| NBI report | SH 119 ML | OLIGARCHY DITCH | IN LONGMONT | Concrete Culvert (2 spans) | -- | 2004 | -- | 9.8 | 21.0 | Fair | 69.8 | D-16-DZ |
| NBI report | SH 93 ML | BOULDER CREEK | IN BOULDER | Prestressed Tee beam (3 spans) | NR listed | 2004 | -- | 131.9 | 206.0 | Good | 79.3 | D-15-BC |
| NBI report | Fairways Drive | Local Drainage | .4 Mi S of Neva Rd | Concrete Culvert (3 spans) | -- | 2005 | -- | 16.1 | 45.6 | Good | 96.9 | BC-426606-0.4A |
| NBI report | Golf Club Drive | Local Drainage | 0.1 Mi So of Hogan Ct | Concrete Culvert (3 spans) | -- | 2005 | -- | 12.1 | 31.5 | Good | 96.8 | BC-580802-0.1 |
| NBI report | Golf Club Drive | Local Drainage | 0.4 Mi So of Hogan Ct | Concrete Culvert (3 spans) | -- | 2005 | -- | 11.8 | 31.2 | Good | 97.9 | BC-580802-0.4 |
| NBI report | Iris Ave | Elmers Two Mile Ditch | 0.15 Mi W of US36/28th St | Concrete Culvert | -- | 2005 | -- | 20.0 | 20.0 | Good | 78.9 | BOLD-40-IRISAVE |
| NBI report | Niwot Meadow Farm | Dry Creek No 2 | 0.2 Mi E of 83rd St | Prestressed Box Beam or girders - Single or Spread | -- | 2005 | -- | 67.6 | 74.2 | Fair | 97.0 | BC-572705-0.2DR |
| NBI report | Sixth St (CR 130) | Middle Boulder Creek | .1 Mi S CR 130Eldorado Rd | Concrete Frame | -- | 2005 | -- | 29.9 | 31.8 | Fair | 91.3 | BC-130-3.3-MB |
| NBI report | 96th Street | BNSF RR | 250 Ft. N of CR 19 | Prestressed Box beam or girders - Multiple (4 spans) | -- | 2006 | -- | 94.5 | 252.3 | Good | 96.8 | LOUIS-96TH-BNSF |
| NBI report | 96th Street | Coal Creek | 0.15 Mi. S. of SH42 | Prestressed Stringer/Multi-beam or girder (2 spans) | -- | 2006 | -- | 119.1 | 247.1 | Good | 98.7 | LOUIS-96TH-COAL |
| NBI report | Airport Road | Lykins Gulch | 500 ft N of Rogers Road | Concrete Culvert (4 spans) | -- | 2006 | -- | 14.4 | 58.4 | Fair | 97.0 | LONG-AIRRD-ROGR |
| NBI report | Airport Road | St. Vrain River Overflow | 0.2 Mi N of St Vrain Rd | Concrete Culvert | -- | 2006 | -- | 14.1 | 43.6 | Good | 95.0 | LONG-AIRRD-SVRD |
| NBI report | Airport Road | St. Vrain River | 600 Ft. S of 9th Ave. | Prestressed Box Beam or girders - Single or Spread (3 spans) | -- | 2006 | -- | 79.1 | 221.5 | Good | 97.4 | LONG-AIRRD_9TH |
| NBI report | McConnell Drive | Saint Vrain Creek | 50 Ft S of US36 / SH66 | Concrete Frame (3 spans) | -- | 2006 | -- | 29.9 | 95.8 | Fair | 89.7 | LYMCCON-W.02-36 |
| NBI report | SH 7 (ARAPAHOE) | BIKE/PED UNDERPASS | EAST OF JCT SH 7 & SH157 | Concrete Frame | -- | 2006 | -- | 20.0 | 22.0 | Fair | 96.1 | D-16-DQ |
| NBI report | Valmont Rd (CR 52) | South Boulder Creek | 0.4 Mi E of 55th St. | Prestressed Box beam or girders - Multiple (2 spans) | -- | 2006 | -- | 89.9 | 189.3 | Fair | 95.6 | BC-52-2.1-SB-A |
| NBI report | US 36 ML | NORTH ST VRAIN CREEK | IN LYONS | Prestressed Stringer/Multi-beam or girder | -- | 2007 | -- | 86.0 | 88.6 | Fair | 97.5 | D-15-BA |
| NBI report | US 36 ML | NORTH ST VRAIN CREEK | IN LYONS | Prestressed Box beam or girders - Multiple | -- | 2007 | -- | 90.2 | 93.2 | Good | 81.1 | D-15-BB |
| NBI report | 27th Way | Skunk Creek | 0.2 Mi No of St Hwy 93 | Concrete Culvert | -- | 2008 | -- | 20.0 | 20.0 | Good | 79.4 | BOLD-13-0.30-1A |
| NBI report | CHERRYVALE ROAD | SH 36 ML | 1.4 MI E OF JCT SH 157 | Prestressed Stringer/Multi-beam or girder (2 spans) | -- | 2009 | -- | 139.4 | 289.4 | Good | 98.7 | E-16-QT |
| NBI report | Martin Street | Saint Vrain River | 0.1 Mi N of SH119 | Prestressed Box beam or girders - Multiple (4 spans) | -- | 2009 | -- | 72.5 | 303.2 | Fair | 93.6 | LONG-MART-KEN |
| NBI report | N. 95th St (CR19) | Left Hand Creek | .4 Mi S of SH 119 | Prestressed Box beam or girders - Multiple | -- | 2009 | -- | 97.4 | 102.7 | Good | 97.8 | BC-19-9.0-LT-A |
| NBI report | 95 Street (CR 19) | Boulder Creek | 1.7 Mi S of CR28 | Prestressed Box beam or girders - Multiple | -- | 2010 | -- | 120.1 | 125.0 | Good | 95.8 | BC-19-15.0-BO-A |
| NBI report | Niwot Road CR34 | Boulder Feeder Ditch | 100 Ft. E of N. 55th St | Prestressed Slab | -- | 2010 | -- | 33.1 | 37.1 | Good | 96.7 | BC-34-3.3-ID-A |
| NBI report | Valmont Road | Elmers Twomile Creek | 400 ft W of 28th | Concrete Culvert | -- | 2010 | -- | 22.0 | 22.0 | Good | 95.7 | BOLD-48-VALMONT |
| NBI report | 30th Street | Boulder, Lefthand Ditch | 400 Ft So of Pearl St | Concrete Slab (3 spans) | -- | 2011 | -- | 23.3 | 75.5 | Good | 92.8 | BOLD-07-1.49-3A |
| NBI report | N 63rd St (CR39) | Lefthand Creek | 0.4 Mi N of Niwot Rd | Prestressed Box Beam or girders - Single or Spread (2 spans) | -- | 2011 | -- | 57.4 | 125.0 | Good | 92.7 | BC-39-4.8-LTA |
| NBI report | NFSR 112.0 | BRAINARD LAKE INLET | W. Side of Brainard Lake | Concrete Culvert | -- | 2011 | -- | 24.0 | 25.6 | Good | 100.0 | 020200000032813 |
| NBI report | SH 52 ML | BOULDER CREEK | 2.4 MI E OF JCT US 287 | Prestressed Box beam or girders - Multiple (5 spans) | -- | 2011 | -- | 47.9 | 218.5 | Good | 92.8 | D-16-DS |
| NBI report | Co Rd 39 (65th St) | LYKINS GULCH | 0.8 Mi N of Nelson Rd | Concrete Culvert (2 spans) | -- | 2012 | -- | 10.2 | 22.0 | Good | 96.9 | BC-39-9.0-LG |
| NBI report | N 115th St | Highland Ditch | 0.95 Mi N of Vermillion R | Concrete Culvert | -- | 2012 | -- | 22.6 | 22.6 | Good | 97.9 | BC-3-2.3-IDA |
| NBI report | S Pratt Parkway | Left Hand Creek | At Missouri Avenue | Concrete Culvert (3 spans) | -- | 2012 | -- | 20.0 | 57.1 | Good | 97.0 | LONG-PRAPK-MISA |
| NBI report | Co Rd 3 / 119th S | Dry Creek No 2 | 0.9 Mi S of SH119 | Prestressed Slab | -- | 2013 | -- | 40.0 | 44.0 | Good | 96.7 | BC-3-8.1-DR2 |
| NBI report | SH 93 ML | PED. UNDERPASS | BROADWAY AND 16TH ST. | Concrete Frame | -- | 2013 | -- | 24.0 | 27.9 | Good | 94.9 | D-15-BG |
| NBI report | County Road 1 | ST VRAIN CREEK | .5 mi south of SH119 | Prestressed Box beam or girders - Multiple (3 spans) | -- | 2014 | -- | 88.6 | 279.5 | Good | 94.6 | BC-901-22.1-SVA |
| NBI report | Flagstaff Rd CR56 | HIllside Slide | 1.0 Mi W of Baseline Rd | Concrete Slab (4 spans) | -- | 2014 | -- | 38.1 | 161.4 | Good | 76.4 | BC-56-00.85-SS |
| NBI report | SH 93 ML | SKUNK CREEK PATH | 0.1 MI N of 27th WAY | Concrete Culvert | -- | 2014 | -- | 22.0 | 22.0 | Good | 76.1 | D-15-CC |
| NBI report | 28TH ST | WONDERLAND CREEK | 40 ft S of Palo Pkwy | Concrete Culvert (2 spans) | -- | 2015 | -- | 17.4 | 36.7 | Good | 91.3 | BOLD-45-28THST |
| NBI report | N. 63rd St (CR39) | Leggett Ditch | 0.4 MI N of SH7 | Concrete Culvert (3 spans) | -- | 2015 | -- | 14.8 | 45.6 | Good | 97.7 | BOLD-39-N63RD-A |
| NBI report | US 36 ML | DAVIDSON DITCH | 2.2 MI SE OF JCT SH 157 | Concrete Culvert | -- | 2015 | -- | 23.3 | 23.3 | Good | 85.0 | E-16-ZF |
| NBI report | Anderson Hill St | James Creek | 200 Ft S of Main St | Prestressed Box beam or girders - Multiple | -- | 2016 | -- | 54.8 | 60.7 | Good | 79.5 | JMSTN-UPPER-A |
| NBI report | CoRd94(LH Cnyn RD) | LEFTHAND CREEK | 0.6 Mi W of Oldstage Rd | Prestressed Box beam or girders - Multiple | -- | 2016 | -- | 51.8 | 60.0 | Good | 84.6 | BC-94-11.7-LTA |
| NBI report | EB US 36 OFF RAMP | EB BUS RAMP | McCASLIN and US 36 | Prestressed Stringer/Multi-beam or girder | -- | 2016 | -- | 39.0 | 45.3 | Good | 91.1 | E-16-ZJ |
| NBI report | Martin Street | Left Hand Creek | 0.2 MI S Ken Pratt Blvd | Prestressed Stringer/Multi-beam or girder (2 spans) | -- | 2016 | -- | 108.9 | 227.0 | Good | 99.9 | LONG-KEN-MART |
| NBI report | Sunset Street | Saint Vrain Creek | 0.1 S Boston Ave | Prestressed Box beam or girders - Multiple (3 spans) | -- | 2016 | -- | 67.3 | 210.0 | Good | 99.9 | LONG-SUNS-BOST |
| NBI report | US 287 ML | ST VRAIN CREEK | IN LONGMONT | Prestressed Box beam or girders - Multiple (3 spans) | -- | 2016 | -- | 91.2 | 248.0 | Good | 88.4 | D-16-EC |
| NBI report | WB US 36 ON RAMP | WB BUS RAMP | MCCASLIN & US 36 | Prestressed Stringer/Multi-beam or girder | -- | 2016 | -- | 70.9 | 75.1 | Good | 88.1 | E-16-ZI |
| NBI report | 83rd St (CO Rd 23) | Little Thompson River | 1.8 Mi N of Woodland | Prestressed Box beam or girders - Multiple (3 spans) | -- | 2017 | -- | 79.4 | 252.0 | Good | 98.6 | BC-23-1.9-LTH-B |
| NBI report | Boston Ave | Spring Gulch | 0.1 mile E. of Martin St. | Concrete Culvert (3 spans) | -- | 2017 | -- | 7.9 | 25.6 | Good | 95.9 | LONG-BOSTON-AVE |
| NBI report | Iris Avenue | Wonderland Creek | Iris Ave and 34th St. | Concrete Culvert (2 spans) | -- | 2017 | -- | 23.3 | 49.9 | Good | 76.2 | BOLD-41-IRISAVE |
| NBI report | Junction Pl | Goose Creek | 0.1 mi N of Pearl Pkwy | Prestressed Box Beam or girders - Single or Spread | -- | 2017 | -- | 71.2 | 79.4 | Fair | 96.9 | BOLD-42-JUNCTPL |
| NBI report | Kalmia Avenue | Dry Creek | 350 Ft East of US 36 | Concrete Culvert (2 spans) | -- | 2017 | -- | 18.0 | 37.1 | Good | 100.0 | BOLD-06-0.10-1A |
| NBI report | Spring Creek Place | Wonderland Creek | 570 ft from 34th St | Concrete Culvert (5 spans) | -- | 2017 | -- | 20.7 | 74.2 | Good | 97.0 | BOLD-43-SPRGCRK |
| NBI report | 34th Street | Wonderland Creek | 40 ft S. of Iris Ave | Concrete Culvert (2 spans) | -- | 2018 | -- | 12.1 | 32.2 | Good | 97.0 | BOLD-46-34THST |
| NBI report | Main Street | James Creek | Inter of Main and Mill | Concrete Box beam or girders - Multiple | -- | 2018 | -- | 55.1 | 60.0 | -- | -- | JMSTN-LOWER-B |
| NBI report | MCConnel Dr. | Saint Vrain Drive | 50 ft S of US36 / SH66 | Prestressed Box beam or girders - Multiple (3 spans) | -- | 2018 | -- | 46.9 | 140.8 | -- | -- | LYMCCON-W.07-36 |
| NBI report | Winding Trail Dr | Wonderland Creek | 300 ft W of 28th | Concrete Culvert (3 spans) | -- | 2018 | -- | 16.4 | 50.9 | Good | 84.5 | BOLD-44-WNDGTRL |