US Bridges

Redwood ST over Interstate 80

Good

Solano County, California · 04-SOL-080-4.43-VAL · Structure no. 23 0114

Built
1958
67 years old, rebuilt 1984
Condition
Good
inspected January 2025
Type
Tee Beam
Prestressed Concrete
Length
157 ft
2 main spans
Daily traffic
25,425
1998 count
Owner
State
State Highway Agency

About this bridge

Redwood ST over Interstate 80 is a prestressed concrete tee beam carrying Redwood ST over Interstate 80 in Solano County, California. It was built in 1958 and reconstructed in 1984, so it is 67 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25,425 vehicles a day, roughly 6% of them trucks, projected to reach 39,687 by 2047. The structure is 157 ft (47.9 m) long and 86 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesRedwood ST
CrossesInterstate 80
Location04-SOL-080-4.43-VAL
RouteCity Street 0
Coordinates38.12294, -122.23025
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating8.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length157 ft (47.9 m)
Longest span76 ft (23.2 m)
Deck width86 ft (26.3 m)
Roadway width73 ft (22.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,425 (1998)
Projected traffic39,687 by 2047
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 Redwood ST over Interstate 80 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1984.

What condition is Redwood ST over Interstate 80 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Redwood ST over Interstate 80 carry?

About 25,425 vehicles per day (1998 count), of which roughly 6% are trucks.

How long is Redwood ST over Interstate 80?

The structure is 157 ft (47.9 m) long with a longest span of 76 ft (23.2 m) and a deck 86 ft wide.

Who owns Redwood ST over Interstate 80?

It is owned by the State Highway Agency.