US Bridges

Valley Ford RD over Gossage Creek

Fair

Sonoma County, California · 6.6 MI Intersection SR 1 · Structure no. 20C0114

Built
1926
99 years old, rebuilt 1950
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete Continuous
Length
43 ft
2 main spans
Daily traffic
3,100
2015 count
Owner
County
County Highway Agency

About this bridge

Valley Ford RD over Gossage Creek is a concrete continuous tee beam carrying Valley Ford RD over Gossage Creek in Sonoma County, California. It was built in 1926 and reconstructed in 1950, so it is 99 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 3,100 vehicles a day, roughly 3% of them trucks, projected to reach 5,491 by 2040. The structure is 43 ft (13.1 m) long and 58 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesValley Ford RD
CrossesGossage Creek
Location6.6 MI Intersection SR 1
RouteCounty Highway 0
Coordinates38.2764, -122.79944
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span22 ft (6.8 m)
Deck width58 ft (17.8 m)
Roadway width54 ft (16.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2015)
Projected traffic5,491 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Valley Ford RD over Gossage Creek built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1950.

What condition is Valley Ford RD over Gossage 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 October 2023.

How much traffic does Valley Ford RD over Gossage Creek carry?

About 3,100 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Valley Ford RD over Gossage Creek?

The structure is 43 ft (13.1 m) long with a longest span of 22 ft (6.8 m) and a deck 58 ft wide.

Who owns Valley Ford RD over Gossage Creek?

It is owned by the County Highway Agency.