US Bridges

Rainsville RD over Wiggins Creek

Fair

Sonoma County, California · 0.8 MI W Stony Point RD · Structure no. 20C0302

Built
1986
39 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
68 ft
3 main spans
Daily traffic
3,200
2011 count
Owner
County
County Highway Agency

About this bridge

Rainsville RD over Wiggins Creek is a concrete continuous slab carrying Rainsville RD over Wiggins Creek in Sonoma County, California. It was built in 1986, so it is 39 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 3,200 vehicles a day, roughly 5% of them trucks, projected to reach 1,756 by 2043. The structure is 68 ft (20.6 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRainsville RD
CrossesWiggins Creek
Location0.8 MI W Stony Point RD
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.27067, -122.68905
Functional classRural 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.
Substructure7 GoodSome minor problems.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length68 ft (20.6 m)
Longest span26 ft (7.9 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2011)
Projected traffic1,756 by 2043
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 RD over Wiggins Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Rainsville RD over Wiggins 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 February 2025.

How much traffic does Rainsville RD over Wiggins Creek carry?

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

How long is Rainsville RD over Wiggins Creek?

The structure is 68 ft (20.6 m) long with a longest span of 26 ft (7.9 m) and a deck 33 ft wide.

Who owns Rainsville RD over Wiggins Creek?

It is owned by the County Highway Agency.