US Bridges

I 15 over Vandenberg Wash

Fair

Clark County, Nevada · North Las Vegas · Structure no. B 976

Built
1970
55 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
45 ft
3 main spans
Daily traffic
65,500
2021 count
Owner
State
State Highway Agency

About this bridge

I 15 over Vandenberg Wash is a concrete culvert carrying I 15 over Vandenberg Wash in Clark County, Nevada. It was built in 1970, so it is 55 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 65,500 vehicles a day, roughly 30% of them trucks, projected to reach 68,000 by 2040. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI 15
CrossesVandenberg Wash
LocationNorth Las Vegas
RouteInterstate 15
CountyClark County
StateNevada
Coordinates36.25142, -115.08815
Functional classUrban 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 protection8 Very GoodNo problems noted.
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 rating110.1 US tons
Inventory rating63.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length45 ft (13.7 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 traffic65,500 (2021)
Projected traffic68,000 by 2040
Trucks30%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$292,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I 15 over Vandenberg Wash built?

It was built in 1970, making it 55 years old in 2025.

What condition is I 15 over Vandenberg 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 Vandenberg Wash carry?

About 65,500 vehicles per day (2021 count), of which roughly 30% are trucks.

How long is I 15 over Vandenberg Wash?

The structure is 45 ft (13.7 m) long with a longest span of 14 ft (4.3 m).

Who owns I 15 over Vandenberg Wash?

It is owned by the State Highway Agency.