US Bridges

Cottonwood Road over Outside Canal

Fair

Merced County, California · 0.9 MI W of SH 33 · Structure no. 39C0212

Built
1915
110 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
23 ft
3 main spans
Daily traffic
344
2014 count
Owner
County
County Highway Agency

About this bridge

Cottonwood Road over Outside Canal is a concrete continuous slab carrying Cottonwood Road over Outside Canal in Merced County, California. It was built in 1915, so it is 110 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 344 vehicles a day, roughly 16% of them trucks, projected to reach 1,068 by 2047. The structure is 23 ft (6.9 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCottonwood Road
CrossesOutside Canal
Location0.9 MI W of SH 33
RouteCounty Highway 0
Coordinates37.18774, -121.02984
Functional classRural Minor 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
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 protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating17.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length23 ft (6.9 m)
Longest span6 ft (1.9 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic344 (2014)
Projected traffic1,068 by 2047
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Road over Outside Canal built?

It was built in 1915, making it 110 years old in 2025.

What condition is Cottonwood Road over Outside 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 February 2025.

How much traffic does Cottonwood Road over Outside Canal carry?

About 344 vehicles per day (2014 count), of which roughly 16% are trucks.

How long is Cottonwood Road over Outside Canal?

The structure is 23 ft (6.9 m) long with a longest span of 6 ft (1.9 m) and a deck 24 ft wide.

Who owns Cottonwood Road over Outside Canal?

It is owned by the County Highway Agency.