US Bridges

Interstate 80 WB over Carquinez Straits RR

Fair

Contra Costa County, California · 04-CC-080-13.80-VAL · Structure no. 28 0352L

Built
2003
22 years old
Condition
Fair
inspected October 2023
Type
Suspension
Steel Continuous
Length
3,465 ft
3 main spans
Daily traffic
154,000
2021 count
Owner
State
State Highway Agency

About this bridge

Interstate 80 WB over Carquinez Straits RR is a steel continuous suspension carrying Interstate 80 WB over Carquinez Straits RR in Contra Costa County, California. It was built in 2003, so it is 22 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 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 154,000 vehicles a day, roughly 7% of them trucks, projected to reach 190,000 by 2040. The structure is 3,465 ft (1,056 m) long and 95 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesInterstate 80 WB
CrossesCarquinez Straits RR
Location04-CC-080-13.80-VAL
RouteInterstate 80
CountyContra Costa County
StateCalifornia
Coordinates38.05596, -122.22596
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to 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 typeSuspension
MaterialSteel Continuous
DeckSteel plate
Main spans3 (+7 approach)
Design loadHS 20 + Mod
Structure length3,465 ft (1,056 m)
Longest span2,388 ft (728 m)
Deck width95 ft (29.1 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deck20 ft (6 m)

Traffic and service

Average daily traffic154,000 (2021)
Projected traffic190,000 by 2040
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
Detour if closed29.8 mi (48 km)
TollToll bridge
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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Interstate 80 WB over Carquinez Straits RR built?

It was built in 2003, making it 22 years old in 2025.

What condition is Interstate 80 WB over Carquinez Straits RR 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 October 2023.

How much traffic does Interstate 80 WB over Carquinez Straits RR carry?

About 154,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Interstate 80 WB over Carquinez Straits RR?

The structure is 3,465 ft (1,056 m) long with a longest span of 2,388 ft (728 m) and a deck 95 ft wide.

Who owns Interstate 80 WB over Carquinez Straits RR?

It is owned by the State Highway Agency.