US Bridges

State Route 12 over UP RR BNSF AMTRAK Main

Fair

Solano County, California · 04-SOL-012-R4.57-SUIS · Structure no. 23 0196

Built
1984
41 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
525 ft
4 main spans
Daily traffic
44,000
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 12 over UP RR BNSF AMTRAK Main is a prestressed concrete continuous box beam or girders - multiple carrying State Route 12 over UP RR BNSF AMTRAK Main in Solano County, California. It was built in 1984, so it is 41 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 44,000 vehicles a day, roughly 7% of them trucks, projected to reach 69,232 by 2044. The structure is 525 ft (160 m) long and 90 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesState Route 12
CrossesUP RR BNSF AMTRAK Main
Location04-SOL-012-R4.57-SUIS
RouteState Highway 12
CountySolano County
StateCalifornia
Coordinates38.24336, -122.04195
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length525 ft (160 m)
Longest span155 ft (47.2 m)
Deck width90 ft (27.3 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,000 (2019)
Projected traffic69,232 by 2044
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 12 over UP RR BNSF AMTRAK Main built?

It was built in 1984, making it 41 years old in 2025.

What condition is State Route 12 over UP RR BNSF AMTRAK Main 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 March 2024.

How much traffic does State Route 12 over UP RR BNSF AMTRAK Main carry?

About 44,000 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is State Route 12 over UP RR BNSF AMTRAK Main?

The structure is 525 ft (160 m) long with a longest span of 155 ft (47.2 m) and a deck 90 ft wide.

Who owns State Route 12 over UP RR BNSF AMTRAK Main?

It is owned by the State Highway Agency.