US Bridges

I 15 over Sloan Wash

Fair

Clark County, Nevada · North of Sloan · Structure no. B 723

Built
1961
64 years old, rebuilt 1980
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
60 ft
4 main spans
Daily traffic
52,000
2021 count
Owner
State
State Highway Agency

About this bridge

I 15 over Sloan Wash is a concrete culvert carrying I 15 over Sloan Wash in Clark County, Nevada. It was built in 1961 and reconstructed in 1980, so it is 64 years old, older than the Nevada average of 36.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 52,000 vehicles a day, roughly 23% of them trucks, projected to reach 122,019 by 2040. The structure is 60 ft (18.3 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI 15
CrossesSloan Wash
LocationNorth of Sloan
RouteInterstate 15
CountyClark County
StateNevada
Coordinates35.95021, -115.18227
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20 + Mod
Structure length60 ft (18.3 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,000 (2021)
Projected traffic122,019 by 2040
Trucks23%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$686,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I 15 over Sloan Wash built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1980.

What condition is I 15 over Sloan Wash in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does I 15 over Sloan Wash carry?

About 52,000 vehicles per day (2021 count), of which roughly 23% are trucks.

How long is I 15 over Sloan Wash?

The structure is 60 ft (18.3 m) long with a longest span of 14 ft (4.3 m).

Who owns I 15 over Sloan Wash?

It is owned by the State Highway Agency.