+47.60719, -112.75336
47°36'26" N, 112°45'12" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:ROUTE 108 over SUN RIVER
Structure number:011501000000009
Location:SUN RIVER
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:69.9 ft. [21.3 m]
Total length:214.9 ft. [65.5 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:28.9 ft. [8.8 m]
Skew angle:20°
Owner:U.S. Forest Service [64]
Year built:1967
Year reconstructed:1995
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:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: July 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:113 [as of 1991]
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Superior to present desirable criteria [9]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Sufficiency rating:82.1

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017FairGoodSatisfactoryFair11382.1
October 2015FairGoodSatisfactoryFair11382.1
August 2013FairGoodSatisfactoryFair11383.1
August 2011FairGoodSatisfactoryFair11383.1
June 2007FairGoodSatisfactoryFair11383.1
July 2005----1130.0
September 2001PoorGoodSatisfactoryPoor1130.0
September 1997PoorGoodGoodPoor1130.0
September 1995FairVery GoodGoodSatisfactory1130.0
October 1991GoodVery GoodVery GoodGood1130.0