US Bridges

Island DR (D300) over Fresno River

Fair

Madera County, California · 0.3 MI NW River RD (400) · Structure no. 41C0170

Built
1973
52 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
142 ft
5 main spans
Daily traffic
258
2020 count
Owner
County
County Highway Agency

About this bridge

Island DR (D300) over Fresno River is a concrete continuous slab carrying Island DR (D300) over Fresno River in Madera County, California. It was built in 1973, so it is 52 years old, younger 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 258 vehicles a day, roughly 3% of them trucks, projected to reach 384 by 2042. The structure is 142 ft (43.4 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesIsland DR (D300)
CrossesFresno River
Location0.3 MI NW River RD (400)
RouteCounty Highway 0
CountyMadera County
StateCalifornia
Coordinates36.99623, -120.00215
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length142 ft (43.4 m)
Longest span28 ft (8.5 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic258 (2020)
Projected traffic384 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Island DR (D300) over Fresno River built?

It was built in 1973, making it 52 years old in 2025.

What condition is Island DR (D300) 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 Island DR (D300) over Fresno River carry?

About 258 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Island DR (D300) over Fresno River?

The structure is 142 ft (43.4 m) long with a longest span of 28 ft (8.5 m) and a deck 31 ft wide.

Who owns Island DR (D300) over Fresno River?

It is owned by the County Highway Agency.