US Bridges

W Ashlan Ave over Herndon Canal

Fair

Fresno County, California · East of West Ave · Structure no. 42C0191

Built
1967
58 years old, rebuilt 1974
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
24,979
2008 count
Owner
City
City or Municipal Highway Agency

About this bridge

W Ashlan Ave over Herndon Canal is a prestressed concrete tee beam carrying W Ashlan Ave over Herndon Canal in Fresno County, California. It was built in 1967 and reconstructed in 1974, so it is 58 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 24,979 vehicles a day, roughly 5% of them trucks, projected to reach 13,127 by 2042. The structure is 60 ft (18.3 m) long and 98 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesW Ashlan Ave
CrossesHerndon Canal
LocationEast of West Ave
RouteCity Street 0
Coordinates36.79358, -119.82541
Functional classUrban Minor Arterial

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 2024
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length60 ft (18.3 m)
Longest span58 ft (17.8 m)
Deck width98 ft (30 m)
Roadway width76 ft (23.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,979 (2008)
Projected traffic13,127 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Ashlan Ave over Herndon Canal built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1974.

What condition is W Ashlan 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 December 2024.

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

About 24,979 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is W Ashlan Ave over Herndon Canal?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.8 m) and a deck 98 ft wide.

Who owns W Ashlan Ave over Herndon Canal?

It is owned by the City or Municipal Highway Agency.