US 20 over Unnamed Draw


+43.61876, -108.22265
43°37'08" N, 108°13'22" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 20 over Unnamed Draw
Structure number:HLU
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:9.5 ft. [2.9 m]
Total length:22.0 ft. [6.7 m]
Owner:State Highway Agency [01]
Year built:1977
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:3
Main spans material:Steel [3]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:988 [as of 2017]
Truck traffic:14% of total traffic
Structural appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Better than present minimum criteria [7]
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: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 the assessed or calculated scour condition. [8]
Sufficiency rating:87.6

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
April 2018Good7 out of 1098887.6
May 2016Good7 out of 10393680.0
April 2014Good7 out of 10164882.7
May 2012Good7 out of 10323780.0
June 2010Good7 out of 10328680.0
June 2008Good7 out of 10325080.0
June 2006Good7 out of 10319080.0
June 2004Good7 out of 10383080.0
May 2002Good7 out of 10370080.0
May 2000Good7 out of 10390080.0
May 1998Good7 out of 10365080.0
May 1996Good7 out of 10152083.7
June 1994Good8 out of 10350080.0
February 1992Good8 out of 10302080.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Culvertlinear ft.3483272100
Steel Protective Coatingsq. ft.10,90810,8280080