US Bridges

Interstate 10 over San Antonio Wash

Good

San Bernardino County, California · 08-SBD-010-0.32-MCL · Structure no. 54 0451

Built
1953
72 years old, rebuilt 2000
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
108 ft
2 main spans
Daily traffic
219,000
2021 count
Owner
State
State Highway Agency

About this bridge

Interstate 10 over San Antonio Wash is a concrete continuous slab carrying Interstate 10 over San Antonio Wash in San Bernardino County, California. It was built in 1953 and reconstructed in 2000, so it is 72 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 219,000 vehicles a day, roughly 7% of them trucks, projected to reach 285,000 by 2043. The structure is 108 ft (32.9 m) long and 161 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesInterstate 10
CrossesSan Antonio Wash
Location08-SBD-010-0.32-MCL
RouteInterstate 10
Coordinates34.08157, -117.70476
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length108 ft (32.9 m)
Longest span53 ft (16.2 m)
Deck width161 ft (49 m)
Roadway width156 ft (47.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic219,000 (2021)
Projected traffic285,000 by 2043
Trucks7%
Lanes on structure11
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 10 over San Antonio Wash built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 2000.

What condition is Interstate 10 over San Antonio 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 2023.

How much traffic does Interstate 10 over San Antonio Wash carry?

About 219,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Interstate 10 over San Antonio Wash?

The structure is 108 ft (32.9 m) long with a longest span of 53 ft (16.2 m) and a deck 161 ft wide.

Who owns Interstate 10 over San Antonio Wash?

It is owned by the State Highway Agency.