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120TH STREET over Rock Creek

Map

Coordinates:
+39.98333, -105.07500
39°58'60" N, 105°04'30" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:120TH STREET over Rock Creek
Structure number:LAF-120TH-001B
Location:0.5 Mi S of S. Boulder Rd
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Minor Collector (Rural) [08]
Length of largest span:20.0 ft. [6.1 m]
Total length:41.3 ft. [12.6 m]
Roadway width between curbs:49.9 ft. [15.2 m]
Deck width edge-to-edge:70.2 ft. [21.4 m]
Skew angle:37°
Owner:City or Municipal Highway Agency [04]
Year built:1986
Year reconstructed:2000
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:2
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: January 2015

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:2,546 [as of 2012]
Truck traffic:9% of total traffic
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Pier/abutment protection:Navigation protection not required [1]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:33.6 tons [30.5 metric tons]
Inventory rating:20.0 tons [18.2 metric tons]
Sufficiency rating:78.1

Previous Inspections

DateSuff. RatingConditionCulvert ConditionSD/FOADT
January 201578.1Good7 out of 10-2546
September 201378.1Good7 out of 10-2546
January 201176.2Good7 out of 10-7447
January 200976.2Good7 out of 10-7447
January 200776.5Good7 out of 10-6187
December 200476.5Good7 out of 10-6187
February 200376.3Good7 out of 10-6187
October 200077.5Good7 out of 10-4201

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Culvert
Reinforced Concrete Culvertlinear ft.1751611040
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.124834100
Steel Protective Coatingsq. ft.124124000