US Bridges

Woodson Road over Jahant Slough

Good

San Joaquin County, California · 0.4 MI NE of Jahant & 99 · Structure no. 29C0278

Built
1930
95 years old, rebuilt 1938
Condition
Good
inspected January 2024
Type
Tee Beam
Concrete
Length
25 ft
1 main span
Daily traffic
700
2013 count
Owner
County
County Highway Agency

About this bridge

Woodson Road over Jahant Slough is a concrete tee beam carrying Woodson Road over Jahant Slough in San Joaquin County, California. It was built in 1930 and reconstructed in 1938, 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 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 700 vehicles a day, roughly 12% of them trucks, projected to reach 547 by 2042. The structure is 25 ft (7.6 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesWoodson Road
CrossesJahant Slough
Location0.4 MI NE of Jahant & 99
RouteCounty Highway 0
Coordinates38.20844, -121.27217
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2013)
Projected traffic547 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Woodson Road over Jahant Slough built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1938.

What condition is Woodson Road over Jahant Slough 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 January 2024.

How much traffic does Woodson Road over Jahant Slough carry?

About 700 vehicles per day (2013 count), of which roughly 12% are trucks.

How long is Woodson Road over Jahant Slough?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 38 ft wide.

Who owns Woodson Road over Jahant Slough?

It is owned by the County Highway Agency.