US 85 over Robbers Roost Creek


+43.46978, -104.20469
43°28'11" N, 104°12'17" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 85 over Robbers Roost Creek
Structure number:JOH
Location:Mule Creek Jct-Newcastle
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:9.8 ft. [3.0 m]
Total length:24.0 ft. [7.3 m]
Deck width edge-to-edge:162.1 ft. [49.4 m]
Skew angle:30°
Owner:State Highway Agency [01]
Year built:1992
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: June 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:1,099 [as of 2017]
Truck traffic:14% of total traffic
Structural appraisal:Equal to present minimum criteria [6]
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:Deterioration or initial disintegration, minor chloride contamination, cracking with some leaching, or spalls on concrete or masonry walls and slabs. Local minor scouring at curtain walls, wingwalls or pipes. Metal culverts have a smooth curvature, non-symmetrical shape, significant corrosion or moderate pitting. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:86.8

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
June 2018Fair6 out of 10109986.8
February 2017Fair6 out of 10103987.3
February 2015Fair6 out of 1092588.1
January 2013Fair6 out of 1097487.7
February 2011Good7 out of 1077789.2
February 2009Good7 out of 1086088.6
February 2007Fair6 out of 1083088.8
February 2005Fair6 out of 1084088.7
March 2003Fair6 out of 1092088.1
March 2001Good9 out of 1085088.7
March 1999Good8 out of 1080087.0
February 1997Good8 out of 1080087.0
March 1995Good8 out of 1076086.4
November 1992Good8 out of 1078079.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.32418513630