US Bridges

Old Dobbins Road over Dobbins Creek

Fair

Yuba County, California · At Texas Hill RD · Structure no. 16C0047

Built
1921
104 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
530
2011 count
Owner
County
County Highway Agency

About this bridge

Old Dobbins Road over Dobbins Creek is a concrete continuous slab carrying Old Dobbins Road over Dobbins Creek in Yuba County, California. It was built in 1921, so it is 104 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 530 vehicles a day, roughly 3% of them trucks, projected to reach 2,142 by 2045. The structure is 27 ft (8.2 m) long and 25 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

CarriesOld Dobbins Road
CrossesDobbins Creek
LocationAt Texas Hill RD
RouteCounty Highway 0
Coordinates39.37125, -121.20951
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic530 (2011)
Projected traffic2,142 by 2045
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old Dobbins Road over Dobbins Creek built?

It was built in 1921, making it 104 years old in 2025.

What condition is Old Dobbins Road over Dobbins 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 Old Dobbins Road over Dobbins Creek carry?

About 530 vehicles per day (2011 count), of which roughly 3% are trucks.

How long is Old Dobbins Road over Dobbins Creek?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m) and a deck 25 ft wide.

Who owns Old Dobbins Road over Dobbins Creek?

It is owned by the County Highway Agency.