US Bridges

Yoakim Bridge RD over Dry Creek

Fair

Sonoma County, California · 0.3 MI SW Dry Creek Road · Structure no. 20C0106

Built
1956
69 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete Continuous
Length
442 ft
7 main spans
Daily traffic
800
2015 count
Owner
County
County Highway Agency

About this bridge

Yoakim Bridge RD over Dry Creek is a concrete continuous tee beam carrying Yoakim Bridge RD over Dry Creek in Sonoma County, California. It was built in 1956, so it is 69 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 6 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 800 vehicles a day, roughly 4% of them trucks, projected to reach 1,339 by 2046. The structure is 442 ft (134.7 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesYoakim Bridge RD
CrossesDry Creek
Location0.3 MI SW Dry Creek Road
RouteCounty Highway 0
Coordinates38.69752, -122.95961
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating43.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length442 ft (134.7 m)
Longest span68 ft (20.7 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2015)
Projected traffic1,339 by 2046
Trucks4%
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 Yoakim Bridge RD over Dry Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Yoakim Bridge RD over Dry 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 October 2024.

How much traffic does Yoakim Bridge RD over Dry Creek carry?

About 800 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is Yoakim Bridge RD over Dry Creek?

The structure is 442 ft (134.7 m) long with a longest span of 68 ft (20.7 m) and a deck 25 ft wide.

Who owns Yoakim Bridge RD over Dry Creek?

It is owned by the County Highway Agency.