+38.86678, -104.86837
38°52'00" N, 104°52'06" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Structure number:CSG-D.97-10.95
Location:AT 31ST STREET
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Collector (Urban) [17]
Length of largest span:11.2 ft. [3.4 m]
Total length:24.3 ft. [7.4 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:58.4 ft. [17.8 m]
Skew angle:31°
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:2
Main spans material:Steel [3]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: March 2016

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:2,019 [as of 2013]
Truck traffic:4% of total traffic
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry 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 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:Large spalls, heavy scaling, wide cracks, considerable efflorescence or opened construction joint permitting loss of backfill. Considerable settlement or misalignment. Considerable scouring or erosion at curtain walls, wingwalls or pipes. Metal culverts have significant distortion and deflection throughout, extensive corrosion or deep pitting. [4]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:39.9 tons [36.3 metric tons]
Inventory rating:36.0 tons [32.7 metric tons]
Sufficiency rating:71.7

Previous Inspections

DateSuff. RatingConditionCulvert ConditionSD/FOADT
March 201671.7Poor4 out of 10SD2019
March 201471.7Poor4 out of 10SD2019
March 201271.7Poor4 out of 10SD2355
March 201071.7Poor4 out of 10SD2355
March 200887.7Fair5 out of 10-2810
April 200687.7Fair5 out of 10-2810
May 200469.6Poor4 out of 10SD2810
April 200296.9Fair6 out of 10-3236
May 200085.7Fair5 out of 10-3236
October 199985.7Fair5 out of 10-3236
October 199885.7Fair5 out of 10-3236
October 199696.8Fair6 out of 10-2289
July 199496.8Fair6 out of 10-2289
October 199296.8Fair6 out of 10-2289
August 199096.8Fair6 out of 10-2912