US Bridges

State Route 12 over UP RR

Poor

Solano County, California · 04-SOL-012-R14.68 · Structure no. 23 0020

Built
1993
32 years old
Condition
Poor
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
191 ft
2 main spans
Daily traffic
12,200
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 12 over UP RR is a prestressed concrete continuous box beam or girders - multiple carrying State Route 12 over UP RR in Solano County, California. It was built in 1993, so it is 32 years old, younger 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 12,200 vehicles a day, projected to reach 20,133 by 2046. The structure is 191 ft (58.2 m) long and 44 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
Location04-SOL-012-R14.68
RouteState Highway 12
CountySolano County
StateCalifornia
Coordinates38.20747, -121.87658
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum 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 spans2
Design loadHS 20 + Mod
Structure length191 ft (58.2 m)
Longest span112 ft (34.1 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,200 (2009)
Projected traffic20,133 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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 State Route 12 over UP RR built?

It was built in 1993, making it 32 years old in 2025.

What condition is State Route 12 over UP RR 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 April 2024.

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

About 12,200 vehicles per day (2009 count).

How long is State Route 12 over UP RR?

The structure is 191 ft (58.2 m) long with a longest span of 112 ft (34.1 m) and a deck 44 ft wide.

Who owns State Route 12 over UP RR?

It is owned by the State Highway Agency.