US Bridges

I-15 over Dry Wash

Good

Clark County, Nevada · North of Las Vegas · Structure no. B1021

Built
1963
62 years old, rebuilt 2023
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
26,500
2022 count
Owner
State
State Highway Agency

About this bridge

I-15 over Dry Wash is a concrete culvert carrying I-15 over Dry Wash in Clark County, Nevada. It was built in 1963 and reconstructed in 2023, so it is 62 years old, older than the Nevada average of 36.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 26,500 vehicles a day, roughly 31% of them trucks, projected to reach 49,634 by 2040. The structure is 34 ft (10.5 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-15
CrossesDry Wash
LocationNorth of Las Vegas
RouteInterstate 15
CountyClark County
StateNevada
Coordinates36.2991, -114.9816
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.1 US tons
Inventory rating37.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length34 ft (10.5 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,500 (2022)
Projected traffic49,634 by 2040
Trucks31%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-15 over Dry Wash built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2023.

What condition is I-15 over Dry Wash in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does I-15 over Dry Wash carry?

About 26,500 vehicles per day (2022 count), of which roughly 31% are trucks.

How long is I-15 over Dry Wash?

The structure is 34 ft (10.5 m) long with a longest span of 17 ft (5.2 m).

Who owns I-15 over Dry Wash?

It is owned by the State Highway Agency.