US Bridges

Sheep Ranch RD over Oneil Creek

Fair

Calaveras County, California · At Gold Mountain Road · Structure no. 30C0040

Built
1930
95 years old, rebuilt 1955
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
332
2011 count
Owner
County
County Highway Agency

About this bridge

Sheep Ranch RD over Oneil Creek is a steel stringer/multi-beam or girder carrying Sheep Ranch RD over Oneil Creek in Calaveras County, California. It was built in 1930 and reconstructed in 1955, so it is 95 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 332 vehicles a day, roughly 10% of them trucks, projected to reach 488 by 2042. The structure is 41 ft (12.5 m) long and 26 ft wide. If it were closed, the detour would be 52.2 mi (84 km).

CarriesSheep Ranch RD
CrossesOneil Creek
LocationAt Gold Mountain Road
RouteCounty Highway 0
Coordinates38.22104, -120.47037
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating44 US tons
Inventory rating26.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span39 ft (11.9 m)
Deck width26 ft (7.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic332 (2011)
Projected traffic488 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.2 mi (84 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 Sheep Ranch RD over Oneil Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1955.

What condition is Sheep Ranch RD over Oneil 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 March 2024.

How much traffic does Sheep Ranch RD over Oneil Creek carry?

About 332 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is Sheep Ranch RD over Oneil Creek?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 26 ft wide.

Who owns Sheep Ranch RD over Oneil Creek?

It is owned by the County Highway Agency.