US Bridges

Patrol RD Unit 3A over Canal Turnout

Fair

Siskiyou County, California · Center Patrol Rd/Unit 3A · Structure no. 000011663-00245

Built
1953
72 years old
Condition
Fair
inspected October 2022
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
—
2022 count
Owner
Federal
Bureau of Fish and Wildlife

About this bridge

Patrol RD Unit 3A over Canal Turnout is a concrete culvert carrying Patrol RD Unit 3A over Canal Turnout in Siskiyou County, California. It was built in 1953, so it is 72 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.

No traffic count is recorded. The structure is 23 ft (7 m) long and 18 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesPatrol RD Unit 3A
CrossesCanal Turnout
LocationCenter Patrol Rd/Unit 3A
RouteFederal Lands Road 0
CountySiskiyou County
StateCalifornia
Coordinates41.976, -121.71367
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28 US tons
Inventory rating16 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span12 ft (3.7 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic—
Projected traffic—
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Fish and Wildlife
Maintained byBureau of Fish and Wildlife
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 Patrol RD Unit 3A over Canal Turnout built?

It was built in 1953, making it 72 years old in 2025.

What condition is Patrol RD Unit 3A over Canal Turnout 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 October 2022.

How much traffic does Patrol RD Unit 3A over Canal Turnout carry?

No traffic count is recorded for this structure.

How long is Patrol RD Unit 3A over Canal Turnout?

The structure is 23 ft (7 m) long with a longest span of 12 ft (3.7 m) and a deck 18 ft wide.

Who owns Patrol RD Unit 3A over Canal Turnout?

It is owned by the Bureau of Fish and Wildlife.