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I 90 over INT WEST BIG TIMBER

Map

Coordinates:
+45.82508, -109.97288
45°49'30" N, 109°58'22" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 90 over INT WEST BIG TIMBER
Structure number:I00090367+05231
Location:1.2M W BIG TIMBER
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:71.9 ft. [21.9 m]
Total length:145.0 ft. [44.2 m]
Roadway width between curbs:41.3 ft. [12.6 m]
Deck width edge-to-edge:44.3 ft. [13.5 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:State Highway Agency [01]
Year built:1981
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:3
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 2015

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:7,600 [as of 2009]
Truck traffic:2% 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:Better than present minimum criteria [7]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:97.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2015GoodGoodGoodGood760097.0
September 2011GoodGoodVery GoodGood760097.0
September 2007GoodGoodVery GoodGood755097.0
October 2003GoodGoodVery GoodGood682097.0
January 2002GoodGoodVery GoodGood682097.0
May 1998GoodGoodVery GoodGood592097.0
April 1994GoodGoodGoodGood615097.0
February 1992GoodGoodGoodGood649097.0
February 1991GoodGoodGoodGood625097.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.7877483900
Deck
Reinforced Concrete Decksq. ft.6,4266,426000
Substructure
Reinforced Concrete Columneach66000
Reinforced Concrete Abutmentlinear ft.108103500
Reinforced Concrete Pier Caplinear ft.8585000
Bearings
Fixed Bearingeach2220200
Steel Protective Coatingsq. ft.999999000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2892751400