US Bridges

Road 23 over Fresno River

Fair

Madera County, California · At Ave 15 · Structure no. 41C0133

Built
1966
59 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
397 ft
20 main spans
Daily traffic
966
2020 count
Owner
County
County Highway Agency

About this bridge

Road 23 over Fresno River is a concrete continuous slab carrying Road 23 over Fresno River in Madera County, California. It was built in 1966, so it is 59 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 966 vehicles a day, roughly 10% of them trucks, projected to reach 1,641 by 2042. The structure is 397 ft (121 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesRoad 23
CrossesFresno River
LocationAt Ave 15
RouteCounty Highway 0
CountyMadera County
StateCalifornia
Coordinates36.96719, -120.1284
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.2 US tons
Inventory rating27.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans20
Design loadHS 20
Structure length397 ft (121 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic966 (2020)
Projected traffic1,641 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Road 23 over Fresno River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Road 23 over Fresno River 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 2024.

How much traffic does Road 23 over Fresno River carry?

About 966 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Road 23 over Fresno River?

The structure is 397 ft (121 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Road 23 over Fresno River?

It is owned by the County Highway Agency.