Structure I 939 · Clark County, NV

Rmp I 515n-i 15s over I 15 & US 95

Carries Rmp I 515n-i 15s over I 15 & US 95, Las Vegas.

Overall conditionGood

Set by its lowest-rated component: Superstructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,917 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

1,917 ft end to end, longest span 146 ft: about 5.3 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a segmental box-girder bridge.

Built199927 years old
Length1917.0 ft584.3 m
Daily traffic28,000counted 2021
Last inspectedJanuary 2023every 24 months

Location

StateNevada
CountyClark
LocationLas Vegas
CarriesRmp I 515n-i 15s
CrossesI 15 & US 95
Coordinates36.17545, -115.15364

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignSegmental Box Girder
Total Length1917.0 ft (584.3 m)
Max Span145.7 ft (44.4 m)
Deck Width38.4 ft (11.7 m)
Deck Area6836.3 sq m
Main Spans15
Year Built1999

Traffic

Avg Daily Traffic28,000 (2021)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge14

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberI 939

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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