US Bridges

Suisun Valley Road over Interstate 80 & Ramps

Fair

Solano County, California · 04-SOL-080-13.49-FRFD · Structure no. 23 0140

Built
1961
64 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
303 ft
4 main spans
Daily traffic
9,641
2001 count
Owner
State
State Highway Agency

About this bridge

Suisun Valley Road over Interstate 80 & Ramps is a steel stringer/multi-beam or girder carrying Suisun Valley Road over Interstate 80 & Ramps in Solano County, California. It was built in 1961, so it is 64 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 9,641 vehicles a day, roughly 3% of them trucks, projected to reach 23,992 by 2045. The structure is 303 ft (92.5 m) long and 34 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSuisun Valley Road
CrossesInterstate 80 & Ramps
Location04-SOL-080-13.49-FRFD
RouteCounty Highway 0
Coordinates38.22321, -122.12941
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length303 ft (92.5 m)
Longest span90 ft (27.4 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,641 (2001)
Projected traffic23,992 by 2045
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 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 Suisun Valley Road over Interstate 80 & Ramps built?

It was built in 1961, making it 64 years old in 2025.

What condition is Suisun Valley Road over Interstate 80 & Ramps 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 February 2025.

How much traffic does Suisun Valley Road over Interstate 80 & Ramps carry?

About 9,641 vehicles per day (2001 count), of which roughly 3% are trucks.

How long is Suisun Valley Road over Interstate 80 & Ramps?

The structure is 303 ft (92.5 m) long with a longest span of 90 ft (27.4 m) and a deck 34 ft wide.

Who owns Suisun Valley Road over Interstate 80 & Ramps?

It is owned by the State Highway Agency.