US Bridges

Alamo Drive over Interstate 80 & Ramp

Fair

Solano County, California · 04-SOL-080-R25.31-VAC · Structure no. 23 0013

Built
1963
62 years old, rebuilt 1991
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
292 ft
2 main spans
Daily traffic
34,454
2001 count
Owner
State
State Highway Agency

About this bridge

Alamo Drive over Interstate 80 & Ramp is a prestressed concrete continuous stringer/multi-beam or girder carrying Alamo Drive over Interstate 80 & Ramp in Solano County, California. It was built in 1963 and reconstructed in 1991, so it is 62 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 34,454 vehicles a day, roughly 2% of them trucks, projected to reach 48,088 by 2045. The structure is 292 ft (89.1 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesAlamo Drive
CrossesInterstate 80 & Ramp
Location04-SOL-080-R25.31-VAC
RouteCity Street 0
Coordinates38.3467, -121.99731
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length292 ft (89.1 m)
Longest span97 ft (29.6 m)
Deck width100 ft (30.5 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,454 (2001)
Projected traffic48,088 by 2045
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 Alamo Drive over Interstate 80 & Ramp built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1991.

What condition is Alamo Drive over Interstate 80 & Ramp 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 Alamo Drive over Interstate 80 & Ramp carry?

About 34,454 vehicles per day (2001 count), of which roughly 2% are trucks.

How long is Alamo Drive over Interstate 80 & Ramp?

The structure is 292 ft (89.1 m) long with a longest span of 97 ft (29.6 m) and a deck 100 ft wide.

Who owns Alamo Drive over Interstate 80 & Ramp?

It is owned by the State Highway Agency.