US Bridges

Interstate 10 WB over Cucamonga Wash

Fair

San Bernardino County, California · 08-SBD-010-6.70-ONT · Structure no. 54 0438L

Built
1966
59 years old, rebuilt 2022
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
96 ft
2 main spans
Daily traffic
126,000
2023 count
Owner
State
State Highway Agency

About this bridge

Interstate 10 WB over Cucamonga Wash is a concrete continuous tee beam carrying Interstate 10 WB over Cucamonga Wash in San Bernardino County, California. It was built in 1966 and reconstructed in 2022, so it is 59 years old, older 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 126,000 vehicles a day, roughly 7% of them trucks, projected to reach 135,000 by 2045. The structure is 96 ft (29.3 m) long and 113 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 10 WB
CrossesCucamonga Wash
Location08-SBD-010-6.70-ONT
RouteInterstate 10
Coordinates34.06807, -117.60128
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
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.
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length96 ft (29.3 m)
Longest span48 ft (14.6 m)
Deck width113 ft (34.4 m)
Roadway width107 ft (32.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic126,000 (2023)
Projected traffic135,000 by 2045
Trucks7%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 WB over Cucamonga Wash built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2022.

What condition is Interstate 10 WB over Cucamonga 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 April 2023.

How much traffic does Interstate 10 WB over Cucamonga Wash carry?

About 126,000 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Interstate 10 WB over Cucamonga Wash?

The structure is 96 ft (29.3 m) long with a longest span of 48 ft (14.6 m) and a deck 113 ft wide.

Who owns Interstate 10 WB over Cucamonga Wash?

It is owned by the State Highway Agency.