US Bridges

Vaca Station Road over Old Alamo Creek

Good

Solano County, California · 0.2 MI S of a ST · Structure no. 23C0013

Built
1949
76 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
38 ft
2 main spans
Daily traffic
352
2004 count
Owner
County
County Highway Agency

About this bridge

Vaca Station Road over Old Alamo Creek is a concrete continuous slab carrying Vaca Station Road over Old Alamo Creek in Solano County, California. It was built in 1949, so it is 76 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 352 vehicles a day, roughly 2% of them trucks, projected to reach 630 by 2046. The structure is 38 ft (11.6 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesVaca Station Road
CrossesOld Alamo Creek
Location0.2 MI S of a ST
RouteCounty Highway 0
Coordinates38.34743, -121.90688
Functional classRural Local

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic352 (2004)
Projected traffic630 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Vaca Station Road over Old Alamo Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is Vaca Station Road over Old Alamo Creek 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 August 2024.

How much traffic does Vaca Station Road over Old Alamo Creek carry?

About 352 vehicles per day (2004 count), of which roughly 2% are trucks.

How long is Vaca Station Road over Old Alamo Creek?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 30 ft wide.

Who owns Vaca Station Road over Old Alamo Creek?

It is owned by the County Highway Agency.