US Bridges

N Jameson Ave over Herndon Canal

Fair

Fresno County, California · 0.01 MI North of Barstow · Structure no. 42C0383

Built
1938
87 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
200
2010 count
Owner
County
County Highway Agency

About this bridge

N Jameson Ave over Herndon Canal is a concrete continuous slab carrying N Jameson Ave over Herndon Canal in Fresno County, California. It was built in 1938, so it is 87 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 227 by 2043. The structure is 26 ft (7.9 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesN Jameson Ave
CrossesHerndon Canal
Location0.01 MI North of Barstow
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.81509, -119.98844
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 rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length26 ft (7.9 m)
Longest span12 ft (3.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2010)
Projected traffic227 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 Jameson Ave over Herndon Canal built?

It was built in 1938, making it 87 years old in 2025.

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

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

How long is N Jameson Ave over Herndon Canal?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.8 m) and a deck 24 ft wide.

Who owns N Jameson Ave over Herndon Canal?

It is owned by the County Highway Agency.