US Bridges

Sonora Road over S San Joaquin Id Ditch

Good

Stanislaus County, California · .75 MI Nw/O Ora Blossom R · Structure no. 38C0294

Built
1935
90 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
182
2016 count
Owner
County
County Highway Agency

About this bridge

Sonora Road over S San Joaquin Id Ditch is a concrete tee beam carrying Sonora Road over S San Joaquin Id Ditch in Stanislaus County, California. It was built in 1935, so it is 90 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 182 vehicles a day, roughly 25% of them trucks, projected to reach 245 by 2045. The structure is 31 ft (9.4 m) long and 21 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesSonora Road
CrossesS San Joaquin Id Ditch
Location.75 MI Nw/O Ora Blossom R
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.83232, -120.70146
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span27 ft (8.2 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic182 (2016)
Projected traffic245 by 2045
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 Sonora Road over S San Joaquin Id Ditch built?

It was built in 1935, making it 90 years old in 2025.

What condition is Sonora Road over S San Joaquin Id Ditch 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 September 2023.

How much traffic does Sonora Road over S San Joaquin Id Ditch carry?

About 182 vehicles per day (2016 count), of which roughly 25% are trucks.

How long is Sonora Road over S San Joaquin Id Ditch?

The structure is 31 ft (9.4 m) long with a longest span of 27 ft (8.2 m) and a deck 21 ft wide.

Who owns Sonora Road over S San Joaquin Id Ditch?

It is owned by the County Highway Agency.