US Bridges

Interstate 15 over Drift Wash

Good

San Bernardino County, California · 08-SBD-015-68.19 · Structure no. 54 0573

Built
1958
67 years old, rebuilt 2003
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
30 ft
3 main spans
Daily traffic
64,000
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 15 over Drift Wash is a concrete continuous culvert carrying Interstate 15 over Drift Wash in San Bernardino County, California. It was built in 1958 and reconstructed in 2003, so it is 67 years old, older than the California average of 54.8 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 64,000 vehicles a day, roughly 25% of them trucks, projected to reach 75,000 by 2042. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesInterstate 15
CrossesDrift Wash
Location08-SBD-015-68.19
RouteInterstate 15
Coordinates34.84455, -117.08736
Functional classUrban 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 protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic64,000 (2022)
Projected traffic75,000 by 2042
Trucks25%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Interstate 15 over Drift Wash built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2003.

What condition is Interstate 15 over Drift 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 April 2024.

How much traffic does Interstate 15 over Drift Wash carry?

About 64,000 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is Interstate 15 over Drift Wash?

The structure is 30 ft (9.1 m) long with a longest span of 9 ft (2.7 m).

Who owns Interstate 15 over Drift Wash?

It is owned by the State Highway Agency.