US Bridges

El Dorado Street over French Camp Slough

Fair

San Joaquin County, California · 0.3 MI N French Camp RD · Structure no. 29C0124

Built
1958
67 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
133 ft
7 main spans
Daily traffic
4,924
2017 count
Owner
County
County Highway Agency

About this bridge

El Dorado Street over French Camp Slough is a concrete continuous slab carrying El Dorado Street over French Camp Slough in San Joaquin County, California. It was built in 1958, so it is 67 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 4,924 vehicles a day, roughly 2% of them trucks, projected to reach 5,998 by 2045. The structure is 133 ft (40.5 m) long and 68 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesEl Dorado Street
CrossesFrench Camp Slough
Location0.3 MI N French Camp RD
RouteCounty Highway 0
Coordinates37.89431, -121.27587
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span20 ft (6.1 m)
Deck width68 ft (20.7 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,924 (2017)
Projected traffic5,998 by 2045
Trucks2%
Lanes on structure4
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was El Dorado Street over French Camp Slough built?

It was built in 1958, making it 67 years old in 2025.

What condition is El Dorado Street over French Camp Slough 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 El Dorado Street over French Camp Slough carry?

About 4,924 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is El Dorado Street over French Camp Slough?

The structure is 133 ft (40.5 m) long with a longest span of 20 ft (6.1 m) and a deck 68 ft wide.

Who owns El Dorado Street over French Camp Slough?

It is owned by the County Highway Agency.