US Bridges

Watson RD over Fife Creek

Good

Sonoma County, California · 0.15 MI W Armstrng Wds RD · Structure no. 20C0363

Built
1970
55 years old
Condition
Good
inspected July 2021
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

Watson RD over Fife Creek is a concrete slab carrying Watson RD over Fife Creek in Sonoma County, California. It was built in 1970, 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 156 by 2040. The structure is 27 ft (8.2 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWatson RD
CrossesFife Creek
Location0.15 MI W Armstrng Wds RD
RouteCounty Highway 0
Coordinates38.51649, -122.99842
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72.1 US tons
Inventory rating43.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width34 ft (10.5 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic156 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Watson RD over Fife Creek built?

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

What condition is Watson RD over Fife 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 July 2021.

How much traffic does Watson RD over Fife Creek carry?

About 100 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Watson RD over Fife Creek?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 34 ft wide.

Who owns Watson RD over Fife Creek?

It is owned by the County Highway Agency.