I 15N over TWAIN AVE


+36.11974, -115.18047
36°07'11" N, 115°10'50" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 15N over TWAIN AVE
Structure number:H 804N
Location:LAS VEGAS
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:34.1 ft. [10.4 m]
Total length:38.4 ft. [11.7 m]
Roadway width between curbs:81.7 ft. [24.9 m]
Deck width edge-to-edge:84.6 ft. [25.8 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Owner:State Highway Agency [01]
Year built:1964
Year reconstructed:1998
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Main span material:Concrete [1]
Main span design:Frame [07]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: January 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:118,000 [as of 2014]
Truck traffic:7% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:69.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2017FairSatisfactorySatisfactoryGood11800069.7
January 2015FairSatisfactorySatisfactoryGood11950069.6
January 2013FairSatisfactorySatisfactoryGood11400069.9
January 2011GoodGoodGoodVery Good11400090.5
January 2009GoodGoodGoodVery Good11400090.5
January 2007GoodGoodGoodGood6990592.6
January 2005GoodGoodGoodGood10235091.1
October 2002GoodGoodGoodGood9119291.6
November 2000GoodGoodGoodGood9119291.6
January 1999GoodGoodGoodGood6990592.6
January 1997GoodGoodGoodGood6156087.9
February 1995GoodGoodGoodGood5150094.1
December 1992GoodGoodGoodGood5150089.9
January 1991GoodGoodGoodVery Good4546090.4

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Abutmentlinear ft.1691492000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.7772500
Reinforced Concrete Slabsq. ft.3,24907002,5490