US Bridges

W Althea Ave over Delta-Mendota Canal

Fair

Fresno County, California · 1.03 MI W of Russell Ave · Structure no. 42C0280

Built
1950
75 years old, rebuilt 1968
Condition
Fair
inspected December 2023
Type
Tee Beam
Concrete
Length
111 ft
3 main spans
Daily traffic
600
2011 count
Owner
County
County Highway Agency

About this bridge

W Althea Ave over Delta-Mendota Canal is a concrete tee beam carrying W Althea Ave over Delta-Mendota Canal in Fresno County, California. It was built in 1950 and reconstructed in 1968, so it is 75 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 600 vehicles a day, roughly 8% of them trucks, projected to reach 2,398 by 2040. The structure is 111 ft (33.8 m) long and 32 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesW Althea Ave
CrossesDelta-Mendota Canal
Location1.03 MI W of Russell Ave
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.89063, -120.67338
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 inspectionDecember 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 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 rating58.2 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length111 ft (33.8 m)
Longest span36 ft (11 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2011)
Projected traffic2,398 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W Althea Ave over Delta-Mendota Canal built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1968.

What condition is W Althea Ave over Delta-Mendota 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 December 2023.

How much traffic does W Althea Ave over Delta-Mendota Canal carry?

About 600 vehicles per day (2011 count), of which roughly 8% are trucks.

How long is W Althea Ave over Delta-Mendota Canal?

The structure is 111 ft (33.8 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.

Who owns W Althea Ave over Delta-Mendota Canal?

It is owned by the County Highway Agency.