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I 90 over BOULDER RIVER

Map

Coordinates:
+45.82633, -109.94519
45°49'35" N, 109°56'43" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 90 over BOULDER RIVER
Structure number:I00090369+00271
Location:BIG TIMBER
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:111.9 ft. [34.1 m]
Total length:396.0 ft. [120.7 m]
Roadway width between curbs:41.3 ft. [12.6 m]
Deck width edge-to-edge:44.3 ft. [13.5 m]
Skew angle:10°
Owner:State Highway Agency [01]
Year built:1980
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: September 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:5,017 [as of 2017]
Truck traffic:21% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Superior to present desirable criteria [9]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:97.8

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018FairSatisfactoryGoodSatisfactory501797.8
September 2016FairSatisfactoryGoodSatisfactory402597.8
September 2014FairSatisfactoryGoodSatisfactory760097.6
December 2013FairSatisfactoryGoodSatisfactory760097.6
September 2010FairSatisfactoryGoodSatisfactory760097.6
September 2007FairSatisfactoryGoodSatisfactory755097.7
October 2005FairSatisfactoryGoodSatisfactory814097.6
October 2003GoodGoodGoodGood682097.7
February 2002GoodGoodGoodGood682097.7
March 2000GoodGoodGoodGood653097.7
July 1998GoodGoodGoodGood592097.7
February 1996GoodGoodGoodGood531097.8
May 1994GoodGoodGoodGood559097.6
April 1992GoodGoodGoodGood581097.6
September 1989GoodGoodGoodGood600097.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.1,9821,982000
Deck
Reinforced Concrete Decksq. ft.17,53417,18335100
Wearing Surfacessq. ft.17,53417,35917500
Substructure
Reinforced Concrete Pier Walllinear ft.131013010
Reinforced Concrete Abutmentlinear ft.1251039130
Joints
Assembly with Sealeach4646000
Bearings
Elastomeric Bearingeach4040000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.79159319800