US Bridges

Geysers RD over Gird Creek

Fair

Sonoma County, California · 0.4 MI N of SR 128 · Structure no. 20C0228

Built
1960
65 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
500
2011 count
Owner
County
County Highway Agency

About this bridge

Geysers RD over Gird Creek is a concrete culvert carrying Geysers RD over Gird Creek 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 500 vehicles a day, roughly 1% of them trucks, projected to reach 884 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesGeysers RD
CrossesGird Creek
Location0.4 MI N of SR 128
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.69176, -122.83431
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span21 ft (6.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2011)
Projected traffic884 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Geysers RD over Gird Creek built?

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

What condition is Geysers RD over Gird 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 July 2023.

How much traffic does Geysers RD over Gird Creek carry?

About 500 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Geysers RD over Gird Creek?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.3 m).

Who owns Geysers RD over Gird Creek?

It is owned by the County Highway Agency.