US Bridges

Southworth Road over Bear Creek

Good

Calaveras County, California · 0.4 MI S of Route 12 · Structure no. 30C0093

Built
2001
24 years old
Condition
Good
inspected February 2025
Type
Slab
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
1,000
2015 count
Owner
County
County Highway Agency

About this bridge

Southworth Road over Bear Creek is a prestressed concrete slab carrying Southworth Road over Bear Creek in Calaveras County, California. It was built in 2001, so it is 24 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 1,000 vehicles a day, roughly 3% of them trucks, projected to reach 1,367 by 2047. The structure is 61 ft (18.7 m) long and 37 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesSouthworth Road
CrossesBear Creek
Location0.4 MI S of Route 12
RouteCounty Highway 0
Coordinates38.17134, -120.95794
Functional classRural Minor Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length61 ft (18.7 m)
Longest span59 ft (18.1 m)
Deck width37 ft (11.3 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2015)
Projected traffic1,367 by 2047
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Southworth Road over Bear Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Southworth Road over Bear Creek 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 February 2025.

How much traffic does Southworth Road over Bear Creek carry?

About 1,000 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Southworth Road over Bear Creek?

The structure is 61 ft (18.7 m) long with a longest span of 59 ft (18.1 m) and a deck 37 ft wide.

Who owns Southworth Road over Bear Creek?

It is owned by the County Highway Agency.