County Road 315 over Mamm Creek


+39.46786, -107.68783
39°28'04" N, 107°41'16" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:County Road 315 over Mamm Creek
Structure number:GAR315-07.20-A
Location:5.2 Mi South of I-70
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:24.9 ft. [7.6 m]
Total length:26.6 ft. [8.1 m]
Roadway width between curbs:29.2 ft. [8.9 m]
Deck width edge-to-edge:32.2 ft. [9.8 m]
Skew angle:12°
Owner:County Highway Agency [02]
Year built:1993
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Concrete [1]
Main span design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: October 2015 

Status:Open, no restriction [A]
Average daily traffic:127 [as of 2012]
Truck traffic:25% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:79.0 tons [71.8 metric tons]
Inventory rating:47.4 tons [43.1 metric tons]
Sufficiency rating:100.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
October 2015100.0Not deficientGoodGoodGood127
October 2013100.0Not deficientGoodGoodGood127
October 2011100.0Not deficientGoodGoodGood127
October 200998.9Not deficientGoodGoodGood419
September 200798.9Not deficientGoodGoodGood411
August 200598.9Not deficientVery GoodVery GoodVery Good480
September 200397.0Not deficientGoodGoodGood51
June 200199.0Not deficientGoodGoodGood51
200086.0Not deficientGoodGoodFair51
August 199797.0Not deficientGoodGoodGood51
September 199586.0Not deficientGoodGoodFair42
August 199398.5Not deficientVery GoodVery GoodVery Good42