+38.86076, -104.86816
38°51'39" N, 104°52'05" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Structure number:CSG-E.00-10.57
Location:AT 31ST STREET
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:8.9 ft. [2.7 m]
Total length:28.9 ft. [8.8 m]
Roadway width between curbs:66.9 ft. [20.4 m]
Deck width edge-to-edge:99.1 ft. [30.2 m]
Owner:City or Municipal Highway Agency [04]
Year built:1955
Historic significance:Historical significance is not determinable at this time [4]
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: March 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:16,371 [as of 2017]
Truck traffic:5% of total traffic
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Superior to present desirable criteria [9]
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:97.5

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
March 2018Fair6 out of 101637197.5
March 2016Fair6 out of 1095498.9
March 2014Fair6 out of 1095498.9
March 2012Fair6 out of 101062998.0
March 2010Fair6 out of 101062998.0
March 2008Fair6 out of 101130397.9
April 2006Fair6 out of 101130397.9
May 2004Good7 out of 101130395.9
April 2002Fair6 out of 10780996.6
May 2000Good7 out of 10780996.3
October 1999Good7 out of 10780996.3
October 1998Good7 out of 10780996.3
October 1996Fair6 out of 10832381.1
July 1994Fair6 out of 10832381.2
October 1992Fair6 out of 10832381.2
August 1990Fair6 out of 10575296.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Culvertlinear ft.297029700
Steel Protective Coatingsq. ft.297297000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.5858000
Steel Protective Coatingsq. ft.5852600