US Bridges

Road 145 over Cottonwood Creek

Fair

Madera County, California · 0.3 MI N Friant RD · Structure no. 41C0079

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
122 ft
4 main spans
Daily traffic
820
2020 count
Owner
County
County Highway Agency

About this bridge

Road 145 over Cottonwood Creek is a concrete continuous slab carrying Road 145 over Cottonwood Creek in Madera County, California. It was built in 1970, so it is 55 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 820 vehicles a day, roughly 5% of them trucks, projected to reach 1,045 by 2042. The structure is 122 ft (37.2 m) long and 31 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesRoad 145
CrossesCottonwood Creek
Location0.3 MI N Friant RD
RouteCounty Highway 0
Coordinates37.01418, -119.73019
Functional classRural Major Collector

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length122 ft (37.2 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic820 (2020)
Projected traffic1,045 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 145 over Cottonwood Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Road 145 over Cottonwood Creek 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 September 2024.

How much traffic does Road 145 over Cottonwood Creek carry?

About 820 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Road 145 over Cottonwood Creek?

The structure is 122 ft (37.2 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns Road 145 over Cottonwood Creek?

It is owned by the County Highway Agency.