US Bridges

Fulton Street over Piner Creek

Good

Sonoma County, California · 0.3 MI S Guerneville RD · Structure no. 20C0179

Built
1970
55 years old, rebuilt 1990
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
22,350
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fulton Street over Piner Creek is a concrete continuous slab carrying Fulton Street over Piner Creek in Sonoma County, California. It was built in 1970 and reconstructed in 1990, so it is 55 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 22,350 vehicles a day, roughly 2% of them trucks, projected to reach 44,274 by 2045. The structure is 90 ft (27.4 m) long and 86 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFulton Street
CrossesPiner Creek
Location0.3 MI S Guerneville RD
RouteCity Street 0
Coordinates38.44844, -122.76951
Functional classUrban Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width86 ft (26.1 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,350 (2019)
Projected traffic44,274 by 2045
Trucks2%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Fulton Street over Piner Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1990.

What condition is Fulton Street over Piner 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 June 2024.

How much traffic does Fulton Street over Piner Creek carry?

About 22,350 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Fulton Street over Piner Creek?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 86 ft wide.

Who owns Fulton Street over Piner Creek?

It is owned by the City or Municipal Highway Agency.