US 550 ML over COW CREEK


+38.24821, -107.75913
38°14'54" N, 107°45'33" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 550 ML over COW CREEK
Structure number:L-05-K
Location:7.7 MI N OF SH 62
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:17.7 ft. [5.4 m]
Total length:47.9 ft. [14.6 m]
Deck width edge-to-edge:142.4 ft. [43.4 m]
Skew angle:25°
Owner:State Highway Agency [01]
Year built:1979
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:Concrete [1]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: June 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:7,000 [as of 2011]
Truck traffic:6% 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 is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
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:69.0

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
June 2017Fair5 out of 10700069.0
June 2015Fair5 out of 10700069.0
April 2013Fair5 out of 10700069.0
June 2011Fair5 out of 10730069.0
May 2009Fair5 out of 10730069.0
May 2007Fair5 out of 10640069.0
May 2005Fair5 out of 10638669.0
April 2003Fair5 out of 10587173.2
June 2001Fair5 out of 10587169.0
May 1999Fair5 out of 10570469.0
May 1997Fair5 out of 10475069.0
May 1995Fair5 out of 10475069.0
May 1993Fair5 out of 10410069.0
June 1992Fair5 out of 10410069.0
May 1990Fair5 out of 10350069.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.47129417700