US Bridges

I 15 SB over California Wash

Fair

Clark County, Nevada · Near Glendale · Structure no. B 839S

Built
1961
64 years old, rebuilt 1982
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
318 ft
4 main spans
Daily traffic
13,500
2021 count
Owner
State
State Highway Agency

About this bridge

I 15 SB over California Wash is a concrete continuous box beam or girders - multiple carrying I 15 SB over California Wash in Clark County, Nevada. It was built in 1961 and reconstructed in 1982, so it is 64 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 13,500 vehicles a day, roughly 25% of them trucks, projected to reach 23,783 by 2040. The structure is 318 ft (96.9 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 15 SB
CrossesCalifornia Wash
LocationNear Glendale
RouteInterstate 15
StateNevada
Coordinates36.55945, -114.68769
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating37 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length318 ft (96.9 m)
Longest span90 ft (27.4 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,500 (2021)
Projected traffic23,783 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 I 15 SB over California Wash built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1982.

What condition is I 15 SB over California 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 SB over California Wash carry?

About 13,500 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is I 15 SB over California Wash?

The structure is 318 ft (96.9 m) long with a longest span of 90 ft (27.4 m) and a deck 43 ft wide.

Who owns I 15 SB over California Wash?

It is owned by the State Highway Agency.