US 491 ML over DRAW


+37.72757, -108.86119
37°43'39" N, 108°51'40" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 491 ML over DRAW
Structure number:N-01-G
Location:5.9 MI NW OF CAHONE
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:14.1 ft. [4.3 m]
Total length:29.9 ft. [9.1 m]
Deck width edge-to-edge:94.2 ft. [28.7 m]
Skew angle:45°
Owner:State Highway Agency [01]
Year built:1937
Year reconstructed:1959
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Number of main spans:2
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: February 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:2,800 [as of 2011]
Truck traffic:18% of total traffic
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
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]
Culvert condition:Moderate to major deterioration or disintegration, extensive cracking and leaching or spalls on concrete or masonry walls and slabs. Minor settlement or misalignment. Noticeable scouring or erosion at curtain walls, wingwalls or pipes. Metal culverts have significant distortion and deflection in one section, significant corrosion or deep pitting. [5]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:68.9
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$152,000

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
February 2017Fair5 out of 10280068.9
March 2015Fair5 out of 10280068.9
February 2013Fair5 out of 10280068.9
February 2011Fair5 out of 10430067.8
March 2009Fair5 out of 10430067.8
February 2007Fair5 out of 10350068.4
March 2005Fair5 out of 10334868.5
March 2003Fair5 out of 10314568.7
February 2001Fair5 out of 10383068.2
March 1999Fair5 out of 10383068.2
February 1997Fair5 out of 10290068.8
March 1995Fair5 out of 10290068.8
April 1993Fair5 out of 10250069.1
March 1992Fair5 out of 10250067.1
January 1990Fair5 out of 10240067.2

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.26615580310