US Bridges

River Road over Interstate 40

Fair

San Bernardino County, California · 08-SBD-040-R141.02-NED · Structure no. 54 0808

Built
1973
52 years old
Condition
Fair
inspected March 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
408 ft
4 main spans
Daily traffic
4,500
2019 count
Owner
State
State Highway Agency

About this bridge

River Road over Interstate 40 is a prestressed concrete continuous stringer/multi-beam or girder carrying River Road over Interstate 40 in San Bernardino County, California. It was built in 1973, so it is 52 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 4,500 vehicles a day, roughly 9% of them trucks, projected to reach 5,507 by 2047. The structure is 408 ft (124.4 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRiver Road
CrossesInterstate 40
Location08-SBD-040-R141.02-NED
RouteCity Street 0
Coordinates34.85463, -114.62671
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length408 ft (124.4 m)
Longest span103 ft (31.4 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2019)
Projected traffic5,507 by 2047
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was River Road over Interstate 40 built?

It was built in 1973, making it 52 years old in 2025.

What condition is River Road over Interstate 40 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 March 2025.

How much traffic does River Road over Interstate 40 carry?

About 4,500 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is River Road over Interstate 40?

The structure is 408 ft (124.4 m) long with a longest span of 103 ft (31.4 m) and a deck 42 ft wide.

Who owns River Road over Interstate 40?

It is owned by the State Highway Agency.