US Bridges

Cottonwood RD over Outside Canal

Good

Merced County, California · 0.1 MI W of Whitworth · Structure no. 39C0211

Built
1970
55 years old
Condition
Good
inspected February 2025
Type
Slab
Concrete Continuous
Length
40 ft
2 main spans
Daily traffic
340
2014 count
Owner
County
County Highway Agency

About this bridge

Cottonwood RD over Outside Canal is a concrete continuous slab carrying Cottonwood RD over Outside Canal in Merced 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 340 vehicles a day, roughly 4% of them trucks, projected to reach 779 by 2047. The structure is 40 ft (12.2 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCottonwood RD
CrossesOutside Canal
Location0.1 MI W of Whitworth
RouteCounty Highway 0
Coordinates37.18775, -121.03392
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.9 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span18 ft (5.5 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic340 (2014)
Projected traffic779 by 2047
Trucks4%
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 Cottonwood RD over Outside Canal built?

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

What condition is Cottonwood RD over Outside Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.

How much traffic does Cottonwood RD over Outside Canal carry?

About 340 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is Cottonwood RD over Outside Canal?

The structure is 40 ft (12.2 m) long with a longest span of 18 ft (5.5 m) and a deck 32 ft wide.

Who owns Cottonwood RD over Outside Canal?

It is owned by the County Highway Agency.