US Bridges

Warren RD over Warren Creek

Fair

Calaveras County, California · 0.5 MI W/O Evergreen RD · Structure no. 30C0066

Built
1937
88 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
207
2011 count
Owner
County
County Highway Agency

About this bridge

Warren RD over Warren Creek is a concrete continuous slab carrying Warren RD over Warren Creek in Calaveras County, California. It was built in 1937, so it is 88 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 207 vehicles a day, projected to reach 215 by 2047. The structure is 28 ft (8.5 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesWarren RD
CrossesWarren Creek
Location0.5 MI W/O Evergreen RD
RouteCounty Highway 0
CountyCalaveras County
StateCalifornia
Coordinates38.13389, -120.92294
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
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 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 rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span12 ft (3.7 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic207 (2011)
Projected traffic215 by 2047
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Warren RD over Warren Creek built?

It was built in 1937, making it 88 years old in 2025.

What condition is Warren RD over Warren 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 February 2025.

How much traffic does Warren RD over Warren Creek carry?

About 207 vehicles per day (2011 count).

How long is Warren RD over Warren Creek?

The structure is 28 ft (8.5 m) long with a longest span of 12 ft (3.7 m) and a deck 22 ft wide.

Who owns Warren RD over Warren Creek?

It is owned by the County Highway Agency.