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]
Operating rating:63.8 tons [58.0 metric tons]
Inventory rating:38.3 tons [34.8 metric tons]
Sufficiency rating:69.7

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
January 201769.7FairSatisfactorySatisfactoryGoodFO118000
January 201569.6FairSatisfactorySatisfactoryGoodFO119500
January 201369.9FairSatisfactorySatisfactoryGoodFO114000
January 201190.5GoodGoodGoodVery Good-114000
January 200990.5GoodGoodGoodVery Good-114000
January 200792.6GoodGoodGoodGood-69905
January 200591.1GoodGoodGoodGood-102350
October 200291.6GoodGoodGoodGood-91192
November 200091.6GoodGoodGoodGood-91192
January 199992.6GoodGoodGoodGood-69905
January 199787.9GoodGoodGoodGoodFO61560
February 199594.1GoodGoodGoodGood-51500
December 199289.9GoodGoodGoodGood-51500
January 199190.4GoodGoodGoodVery Good-45460

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Reinforced Concrete Abutmentlinear ft.1691492000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.7772500
Reinforced Concrete Slabsq. ft.3,24907002,5490