COUNTY ROAD 321 over I 70 ML

Map

Coordinates:
+39.69230, -105.80520
39°41'32" N, 105°48'19" W

Source: National Bridge Inventory. Information not verified; use at your own risk.

Name:	COUNTY ROAD 321 over I 70 ML
Structure number:	F-13-T
Location:	8 MI E OF EISENHOWER TUNN
Purpose:	Carries highway overpass over highway
Route classification:	Local (Rural) `[09]`
Length of largest span:	104.0 ft. `[31.7 m]`
Total length:	204.1 ft. `[62.2 m]`
Roadway width between curbs:	34.1 ft. `[10.4 m]`
Deck width edge-to-edge:	36.4 ft. `[11.1 m]`
Vertical clearance below bridge:	13.1 ft. `[4.0 m]`
Owner:	State Highway Agency `[01]`
Year built:	1971
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:	Steel continuous `[4]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Bituminous `[6]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	88 `[as of 2013]`
Truck traffic:	8% of total traffic
Deck condition:	Fair `[5 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Structural appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Deck geometry appraisal:	Superior to present desirable criteria `[9]`
Underclearances appraisal:	Better than present minimum criteria `[7]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	84.8

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
April 2017	Fair	Fair	Fair	Satisfactory	88	84.8
April 2015	Fair	Fair	Fair	Satisfactory	88	83.8
April 2013	Fair	Fair	Fair	Satisfactory	88	84.8
June 2011	Poor	Poor	Fair	Satisfactory	400	82.7
May 2009	Poor	Poor	Fair	Satisfactory	400	82.7
July 2007	Poor	Poor	Fair	Satisfactory	420	82.7
June 2005	Poor	Poor	Fair	Satisfactory	420	82.7
June 2003	Poor	Poor	Fair	Satisfactory	420	82.7
April 2001	Poor	Poor	Fair	Satisfactory	420	82.6
April 1999	Fair	Fair	Satisfactory	Satisfactory	400	95.6
April 1997	Fair	Fair	Satisfactory	Satisfactory	408	95.6
June 1995	Fair	Fair	Satisfactory	Satisfactory	408	93.6
April 1993	Fair	Satisfactory	Good	Satisfactory	408	94.9
June 1991	Fair	Satisfactory	Good	Satisfactory	408	98.9

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Steel Girder/Beam	linear ft.	1,020	210	800	10	0
Steel Protective Coating	sq. ft.	1,020	0	1,010	10	0
Deck
Reinforced Concrete Deck	sq. ft.	7,446	4,840	2,606	0	0
Wearing Surfaces	sq. ft.	6,936	6,836	100	0	0
Concrete Protective Coating	sq. ft.	6,936	6,936	0	0	0
Substructure
Reinforced Concrete Pier Wall	linear ft.	15	15	0	0	0
Reinforced Concrete Abutment	linear ft.	73	38	20	15	0
Reinforced Concrete Pier Cap	linear ft.	35	35	0	0	0
Joints
Compression Joint	linear ft.	73	0	73	0	0
Bearings
Elastomeric Bearing	each	10	9	1	0	0
Fixed Bearing	each	5	5	0	0	0
Steel Protective Coating	sq. ft.	5	5	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	408	401	7	0	0
Steel Protective Coating	sq. ft.	1,632	1,604	28	0	0