I 15N over SR591 SPRING MTN RD


+36.12611, -115.18028
36°07'34" N, 115°10'49" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I 15N over SR591 SPRING MTN RD
Structure number:I 806N
Location:LAS VEGAS
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:120.1 ft. [36.6 m]
Total length:231.0 ft. [70.4 m]
Roadway width between curbs:79.1 ft. [24.1 m]
Deck width edge-to-edge:85.0 ft. [25.9 m]
Vertical clearance below bridge:16.7 ft. [5.1 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1994
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:Prestressed concrete continuous [6]
Main spans design:Box beam or girders - Multiple [05]
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:6% of total traffic
Deck condition:Satisfactory [6 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:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Basically intolerable requiring high priority of replacement [2]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:99.6 tons [90.5 metric tons]
Inventory rating:59.5 tons [54.1 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:86.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$2,572,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
January 201586.0Functionally obsoleteSatisfactoryGoodGood119500
January 201389.1Functionally obsoleteSatisfactoryGoodGood99300
January 201184.2Functionally obsoleteGoodGoodGood99300
January 200984.2Functionally obsoleteGoodGoodGood99300
January 200786.6Not deficientGoodGoodGood98250
December 200485.9Not deficientGoodVery GoodGood104925
January 200383.7Not deficientGoodVery GoodGood104925
December 200082.5Not deficientGoodVery GoodVery Good94482
20000.0Not applicable---7410
January 199984.6Not deficientGoodVery GoodVery Good73330
February 199785.4Not deficientGoodVery GoodVery Good65330
February 199589.1Functionally obsoleteVery GoodVery GoodVery Good48408
March 199488.2Not deficientVery GoodVery GoodVery Good48408
January 199187.2Functionally obsoleteGoodGoodGood35700