US Bridges

Swanson Road over T.I.D. Ceres Main Canal

Fair

Stanislaus County, California · 1.0 MI N Whitmore RD · Structure no. 38C0155

Built
1945
80 years old, rebuilt 2004
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
57 ft
4 main spans
Daily traffic
250
2019 count
Owner
County
County Highway Agency

About this bridge

Swanson Road over T.I.D. Ceres Main Canal is a steel stringer/multi-beam or girder carrying Swanson Road over T.I.D. Ceres Main Canal in Stanislaus County, California. It was built in 1945 and reconstructed in 2004, so it is 80 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 250 vehicles a day, roughly 2% of them trucks, projected to reach 557 by 2047. The structure is 57 ft (17.3 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesSwanson Road
CrossesT.I.D. Ceres Main Canal
Location1.0 MI N Whitmore RD
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.60968, -120.78298
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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans4
Design loadUnknown
Structure length57 ft (17.3 m)
Longest span14 ft (4.3 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2019)
Projected traffic557 by 2047
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Swanson Road over T.I.D. Ceres Main Canal built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 2004.

What condition is Swanson Road over T.I.D. Ceres Main Canal 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 Swanson Road over T.I.D. Ceres Main Canal carry?

About 250 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Swanson Road over T.I.D. Ceres Main Canal?

The structure is 57 ft (17.3 m) long with a longest span of 14 ft (4.3 m) and a deck 20 ft wide.

Who owns Swanson Road over T.I.D. Ceres Main Canal?

It is owned by the County Highway Agency.