US Bridges

IRR I 15 over Dry Wash

Fair

Clark County, Nevada · North Las Vegas · Structure no. B 690N

Built
1958
67 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
14,600
2021 count
Owner
State
State Highway Agency

About this bridge

IRR I 15 over Dry Wash is a concrete culvert carrying IRR I 15 over Dry Wash in Clark County, Nevada. It was built in 1958, so it is 67 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 14,600 vehicles a day, roughly 25% of them trucks, projected to reach 26,472 by 2040. The structure is 43 ft (13.1 m) long and 47 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIRR I 15
CrossesDry Wash
LocationNorth Las Vegas
RouteInterstate 15
CountyClark County
StateNevada
Coordinates36.47199, -114.82082
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating64.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width47 ft (14.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2021)
Projected traffic26,472 by 2040
Trucks25%
Lanes on structure2
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 IRR I 15 over Dry Wash built?

It was built in 1958, making it 67 years old in 2025.

What condition is IRR 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 IRR I 15 over Dry Wash carry?

About 14,600 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is IRR I 15 over Dry Wash?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m) and a deck 47 ft wide.

Who owns IRR I 15 over Dry Wash?

It is owned by the State Highway Agency.