US Bridges

Whitmore Avenue over T.I.D. Main Canal

Fair

Stanislaus County, California · 0.8 MI W Hickman RD · Structure no. 38C0090

Built
1923
102 years old, rebuilt 1962
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete Continuous
Length
53 ft
3 main spans
Daily traffic
1,940
2017 count
Owner
County
County Highway Agency

About this bridge

Whitmore Avenue over T.I.D. Main Canal is a concrete continuous tee beam carrying Whitmore Avenue over T.I.D. Main Canal in Stanislaus County, California. It was built in 1923 and reconstructed in 1962, so it is 102 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 1,940 vehicles a day, roughly 15% of them trucks, projected to reach 3,061 by 2043. The structure is 53 ft (16.2 m) long and 36 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesWhitmore Avenue
CrossesT.I.D. Main Canal
Location0.8 MI W Hickman RD
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.59463, -120.76746
Functional classRural Major Collector

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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating32.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span17 ft (5.2 m)
Deck width36 ft (11 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,940 (2017)
Projected traffic3,061 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Whitmore Avenue over T.I.D. Main Canal built?

It was built in 1923, making it 102 years old in 2025. It was reconstructed in 1962.

What condition is Whitmore Avenue over T.I.D. 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 Whitmore Avenue over T.I.D. Main Canal carry?

About 1,940 vehicles per day (2017 count), of which roughly 15% are trucks.

How long is Whitmore Avenue over T.I.D. Main Canal?

The structure is 53 ft (16.2 m) long with a longest span of 17 ft (5.2 m) and a deck 36 ft wide.

Who owns Whitmore Avenue over T.I.D. Main Canal?

It is owned by the County Highway Agency.