I 15N over TWAIN AVE


+36.11944, -115.18028
36°07'10" N, 115°10'49" 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:24.0 ft. [7.3 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 2015 

Status:Open, no restriction [A]
Average daily traffic:119,500 [as of 2012]
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]
Operating rating:63.8 tons [58.0 metric tons]
Inventory rating:38.3 tons [34.8 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:69.6

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
January 201569.6Functionally obsoleteSatisfactorySatisfactoryGood119500
January 201369.9Functionally obsoleteSatisfactorySatisfactoryGood114000
January 201190.5Not deficientGoodGoodVery Good114000
January 200990.5Not deficientGoodGoodVery Good114000
January 200792.6Not deficientGoodGoodGood69905
January 200591.1Not deficientGoodGoodGood102350
October 200291.6Not deficientGoodGoodGood91192
November 200091.6Not deficientGoodGoodGood91192
January 199992.6Not deficientGoodGoodGood69905
January 199787.9Functionally obsoleteGoodGoodGood61560
February 199594.1Not deficientGoodGoodGood51500
December 199289.9Not deficientGoodGoodGood51500
January 199190.4Not deficientGoodGoodVery Good45460