US Bridges

State Route 12 over Denverton Creek

Fair

Solano County, California · 04-SOL-012-12.92 · Structure no. 23 0136

Built
1957
68 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
57 ft
3 main spans
Daily traffic
12,200
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 12 over Denverton Creek is a concrete continuous slab carrying State Route 12 over Denverton Creek in Solano County, California. It was built in 1957, so it is 68 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 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 12,200 vehicles a day, projected to reach 20,133 by 2046. The structure is 57 ft (17.5 m) long and 40 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesState Route 12
CrossesDenverton Creek
Location04-SOL-012-12.92
RouteState Highway 12
CountySolano County
StateCalifornia
Coordinates38.22749, -121.89611
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length57 ft (17.5 m)
Longest span22 ft (6.7 m)
Deck width40 ft (12.3 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
CrossesWaterway
Detour if closed31.1 mi (50 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 12 over Denverton Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is State Route 12 over Denverton Creek 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 April 2024.

How much traffic does State Route 12 over Denverton Creek carry?

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

How long is State Route 12 over Denverton Creek?

The structure is 57 ft (17.5 m) long with a longest span of 22 ft (6.7 m) and a deck 40 ft wide.

Who owns State Route 12 over Denverton Creek?

It is owned by the State Highway Agency.