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 

Good/Fair/Poor Condition:Good
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. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 2015100.0GoodGoodGoodGood-127
October 2013100.0GoodGoodGoodGood-127
October 2011100.0GoodGoodGoodGood-127
October 200998.9GoodGoodGoodGood-419
September 200798.9GoodGoodGoodGood-411
August 200598.9GoodVery GoodVery GoodVery Good-480
September 200397.0GoodGoodGoodGood-51
June 200199.0GoodGoodGoodGood-51
August 199986.0FairGoodGoodFair-51
August 199797.0GoodGoodGoodGood-51
September 199586.0FairGoodGoodFair-42
August 199398.5GoodVery GoodVery GoodVery Good-42