US Bridges

I 15 over Dry Wash

Good

Clark County, Nevada · Northwest of Vegas · Structure no. B1070

Built
1963
62 years old, rebuilt 1980
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
34,000
2021 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 1980, 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 34,000 vehicles a day, roughly 27% of them trucks, projected to reach 50,000 by 2040. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 15
CrossesDry Wash
LocationNorthwest of Vegas
RouteInterstate 15
StateNevada
Coordinates36.33752, -114.91652
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.1 US tons
Inventory rating25.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,000 (2021)
Projected traffic50,000 by 2040
Trucks27%
Lanes on structure5
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 1980.

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 November 2024.

How much traffic does I 15 over Dry Wash carry?

About 34,000 vehicles per day (2021 count), of which roughly 27% are trucks.

How long is I 15 over Dry Wash?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns I 15 over Dry Wash?

It is owned by the State Highway Agency.