US Bridges

Rainsville Road over Willow Brk (petaluma Rv)

Fair

Sonoma County, California · 0.1 MI SW Stony Point RD · Structure no. 20C0300

Built
1960
65 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
3,200
2011 count
Owner
County
County Highway Agency

About this bridge

Rainsville Road over Willow Brk (petaluma Rv) is a concrete continuous slab carrying Rainsville Road over Willow Brk (petaluma Rv) in Sonoma County, California. It was built in 1960, so it is 65 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 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 3,200 vehicles a day, roughly 5% of them trucks, projected to reach 1,815 by 2047. The structure is 80 ft (24.3 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRainsville Road
CrossesWillow Brk (petaluma Rv)
Location0.1 MI SW Stony Point RD
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.2718, -122.67701
Functional classUrban Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length80 ft (24.3 m)
Longest span28 ft (8.5 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2011)
Projected traffic1,815 by 2047
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Rainsville Road over Willow Brk (petaluma Rv) built?

It was built in 1960, making it 65 years old in 2025.

What condition is Rainsville Road over Willow Brk (petaluma Rv) 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 February 2025.

How much traffic does Rainsville Road over Willow Brk (petaluma Rv) carry?

About 3,200 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Rainsville Road over Willow Brk (petaluma Rv)?

The structure is 80 ft (24.3 m) long with a longest span of 28 ft (8.5 m) and a deck 29 ft wide.

Who owns Rainsville Road over Willow Brk (petaluma Rv)?

It is owned by the County Highway Agency.