US Bridges

N Dickenson Ave over Herndon Canal

Fair

Fresno County, California · At Barstow Ave · Structure no. 42C0385

Built
1940
85 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
300
2011 count
Owner
County
County Highway Agency

About this bridge

N Dickenson Ave over Herndon Canal is a concrete continuous slab carrying N Dickenson Ave over Herndon Canal in Fresno County, California. It was built in 1940, so it is 85 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 300 vehicles a day, roughly 6% of them trucks, projected to reach 706 by 2043. The structure is 32 ft (9.8 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN Dickenson Ave
CrossesHerndon Canal
LocationAt Barstow Ave
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.81508, -119.97034
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 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.5 US tons
Inventory rating19.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length32 ft (9.8 m)
Longest span15 ft (4.7 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2011)
Projected traffic706 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Dickenson Ave over Herndon Canal built?

It was built in 1940, making it 85 years old in 2025.

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

About 300 vehicles per day (2011 count), of which roughly 6% are trucks.

How long is N Dickenson Ave over Herndon Canal?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.7 m) and a deck 24 ft wide.

Who owns N Dickenson Ave over Herndon Canal?

It is owned by the County Highway Agency.