US Bridges

W Barstow Ave over Herndon Canal

Fair

Fresno County, California · At Westlawn Ave · Structure no. 42C0386

Built
1920
105 years old, rebuilt 1945
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
50 ft
2 main spans
Daily traffic
500
2010 count
Owner
County
County Highway Agency

About this bridge

W Barstow Ave over Herndon Canal is a concrete continuous slab carrying W Barstow Ave over Herndon Canal in Fresno County, California. It was built in 1920 and reconstructed in 1945, so it is 105 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 6 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 1,069 by 2043. The structure is 50 ft (15.2 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesW Barstow Ave
CrossesHerndon Canal
LocationAt Westlawn Ave
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.81497, -119.95223
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span24 ft (7.3 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2010)
Projected traffic1,069 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 W Barstow Ave over Herndon Canal built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1945.

What condition is W Barstow Ave over Herndon 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 January 2025.

How much traffic does W Barstow Ave over Herndon Canal carry?

About 500 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is W Barstow Ave over Herndon Canal?

The structure is 50 ft (15.2 m) long with a longest span of 24 ft (7.3 m) and a deck 41 ft wide.

Who owns W Barstow Ave over Herndon Canal?

It is owned by the County Highway Agency.