US Bridges

Hauser Br RD over South Fork Gualala River

Good

Sonoma County, California · 5 Mi. East of Seaview Rd. · Structure no. 20C0592

Built
2017
8 years old
Condition
Good
inspected June 2023
Type
Arch - Deck
Steel Continuous
Length
170 ft
2 main spans
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

Hauser Br RD over South Fork Gualala River is a steel continuous arch - deck carrying Hauser Br RD over South Fork Gualala River in Sonoma County, California. It was built in 2017, so it is 8 years old, younger 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 4% of them trucks, projected to reach 262 by 2040. The structure is 170 ft (51.9 m) long and 26 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesHauser Br RD
CrossesSouth Fork Gualala River
Location5 Mi. East of Seaview Rd.
RouteCounty Highway 0
Coordinates38.60313, -123.28717
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length170 ft (51.9 m)
Longest span120 ft (36.6 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic262 by 2040
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 Hauser Br RD over South Fork Gualala River built?

It was built in 2017, making it 8 years old in 2025.

What condition is Hauser Br RD over South Fork Gualala River 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 2023.

How much traffic does Hauser Br RD over South Fork Gualala River carry?

About 100 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is Hauser Br RD over South Fork Gualala River?

The structure is 170 ft (51.9 m) long with a longest span of 120 ft (36.6 m) and a deck 26 ft wide.

Who owns Hauser Br RD over South Fork Gualala River?

It is owned by the County Highway Agency.