US Bridges

I 15 over Dry Wash

Fair

Clark County, Nevada · Southwest of Mesquite · Structure no. B1169N

Built
1966
59 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
12,400
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 1966, so it is 59 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 12,400 vehicles a day, roughly 25% of them trucks, projected to reach 23,783 by 2040. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 15
CrossesDry Wash
LocationSouthwest of Mesquite
RouteInterstate 15
StateNevada
Coordinates36.77747, -114.26987
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 inspectionNovember 2024
Inspection intervalevery 48 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 rating61.3 US tons
Inventory rating36.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 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 traffic12,400 (2021)
Projected traffic23,783 by 2040
Trucks25%
Lanes on structure3
Traffic directionOne-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 1966, making it 59 years old in 2025.

What condition is I 15 over Dry 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 November 2024.

How much traffic does I 15 over Dry Wash carry?

About 12,400 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is I 15 over Dry Wash?

The structure is 25 ft (7.6 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.