SR-20, INT.X-ROAD over I-15 (SR-15) NBL & S


+38.07194, -112.68917
38°04'19" N, 112°41'21" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR-20, INT.X-ROAD over I-15 (SR-15) NBL & S
Structure number:0C 658
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:144.4 ft. [44.0 m]
Total length:291.0 ft. [88.7 m]
Roadway width between curbs:30.5 ft. [9.3 m]
Deck width edge-to-edge:34.1 ft. [10.4 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:State Highway Agency [01]
Year built:1979
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:2
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: March 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:2,035 [as of 2014]
Truck traffic:48% of total traffic
Deck condition:Good [7 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:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:73.5

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2017FairGoodGoodSatisfactory203573.5
March 2015GoodGoodGoodGood193865.6
March 2013GoodGoodGoodGood147875.9
March 2011GoodGoodGoodVery Good152075.7
February 2009GoodGoodGoodVery Good152075.7
March 2007GoodGoodGoodVery Good109079.9
April 2005GoodGoodGoodVery Good109079.9
March 2003GoodGoodGoodVery Good135077.4
March 2001GoodGoodGoodVery Good131471.9
February 1999GoodGoodGoodVery Good131471.9
February 1997GoodGoodGoodVery Good126572.4
March 1995GoodGoodGoodVery Good126580.4
February 1993GoodGoodGoodVery Good41590.9
March 1991GoodGoodGoodVery Good40491.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,15477438000
Reinforced Concrete Decksq. ft.9,8348,2348008000
Reinforced Concrete Pier Walllinear ft.1918100
Reinforced Concrete Abutmentlinear ft.68452210
Reinforced Concrete Pier Caplinear ft.34211300
Strip Seal Jointlinear ft.3403400
Movable Bearingeach80350
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.638063800