US Bridges

N Floyd Ave over Herndon Canal

Fair

Fresno County, California · At Barstow Ave · Structure no. 42C0484

Built
1925
100 years old, rebuilt 1986
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
200
2010 count
Owner
County
County Highway Agency

About this bridge

N Floyd Ave over Herndon Canal is a concrete slab carrying N Floyd Ave over Herndon Canal in Fresno County, California. It was built in 1925 and reconstructed in 1986, so it is 100 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 180 by 2043. The structure is 24 ft (7.3 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesN Floyd Ave
CrossesHerndon Canal
LocationAt Barstow Ave
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.81511, -119.99755
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.2 US tons
Inventory rating52.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span21 ft (6.5 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2010)
Projected traffic180 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 N Floyd Ave over Herndon Canal built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1986.

What condition is N Floyd 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 N Floyd Ave over Herndon Canal carry?

About 200 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is N Floyd Ave over Herndon Canal?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.5 m) and a deck 26 ft wide.

Who owns N Floyd Ave over Herndon Canal?

It is owned by the County Highway Agency.