US Bridges

Valley Ford RD over Americano Creek

Fair

Sonoma County, California · 3.6 MI E JCT SR 1 · Structure no. 20C0115

Built
1985
40 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
73 ft
3 main spans
Daily traffic
3,000
2015 count
Owner
County
County Highway Agency

About this bridge

Valley Ford RD over Americano Creek is a concrete continuous slab carrying Valley Ford RD over Americano Creek in Sonoma County, California. It was built in 1985, so it is 40 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 5 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 3,000 vehicles a day, roughly 3% of them trucks, projected to reach 3,325 by 2046. The structure is 73 ft (22.3 m) long and 41 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesValley Ford RD
CrossesAmericano Creek
Location3.6 MI E JCT SR 1
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.30303, -122.83466
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length73 ft (22.3 m)
Longest span28 ft (8.5 m)
Deck width41 ft (12.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2015)
Projected traffic3,325 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Valley Ford RD over Americano Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Valley Ford RD over Americano 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 November 2024.

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

About 3,000 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Valley Ford RD over Americano Creek?

The structure is 73 ft (22.3 m) long with a longest span of 28 ft (8.5 m) and a deck 41 ft wide.

Who owns Valley Ford RD over Americano Creek?

It is owned by the County Highway Agency.