+46.47008, -108.44038
46°28'12" N, 108°26'25" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 12 over WILLOW CREEK
Structure number:P00014174+06061
Location:4M NE ROUNDUP
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:9.8 ft. [3.0 m]
Total length:21.7 ft. [6.6 m]
Owner:State Highway Agency [01]
Year built:1999
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: October 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:820 [as of 2015]
Truck traffic:8% of total traffic
Structural appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:There are no noticeable or noteworthy deficiencies which affect the condition of the channel. [9]
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:87.4

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
October 2016Good7 out of 1082087.4
October 2014Good7 out of 1073088.2
October 2012Good7 out of 1073088.2
October 2010Good7 out of 1073085.5
October 2008Good8 out of 10117071.8
December 2006Good9 out of 10113072.2
January 2005Good9 out of 10122071.2
January 2003Good9 out of 1068086.0
January 2002Good9 out of 1068086.0
October 2000Good9 out of 1068069.1
January 1998FairN out of 1077050.0
May 1996GoodN out of 1069752.7
November 1993GoodN out of 1068152.1
April 1992GoodN out of 1069951.9
January 1991FairN out of 1059154.4

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.187183400