US Bridges

Interstate 80 over Suisun Creek

Poor

Solano County, California · 04-SOL-080-14.55 · Structure no. 23 0007

Built
1932
93 years old, rebuilt 1971
Condition
Poor
inspected February 2025
Type
Slab
Concrete
Length
73 ft
3 main spans
Daily traffic
202,000
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 80 over Suisun Creek is a concrete slab carrying Interstate 80 over Suisun Creek in Solano County, California. It was built in 1932 and reconstructed in 1971, so it is 93 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 202,000 vehicles a day, roughly 10% of them trucks, projected to reach 312,361 by 2045. The structure is 73 ft (22.2 m) long and 190 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesInterstate 80
CrossesSuisun Creek
Location04-SOL-080-14.55
RouteInterstate 80
Coordinates38.23081, -122.11253
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length73 ft (22.2 m)
Longest span24 ft (7.3 m)
Deck width190 ft (57.9 m)
Roadway width184 ft (56.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic202,000 (2009)
Projected traffic312,361 by 2045
Trucks10%
Lanes on structure13
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 80 over Suisun Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1971.

What condition is Interstate 80 over Suisun Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Interstate 80 over Suisun Creek carry?

About 202,000 vehicles per day (2009 count), of which roughly 10% are trucks.

How long is Interstate 80 over Suisun Creek?

The structure is 73 ft (22.2 m) long with a longest span of 24 ft (7.3 m) and a deck 190 ft wide.

Who owns Interstate 80 over Suisun Creek?

It is owned by the State Highway Agency.