US Bridges

Walker Creek Road over Walker Creek

Fair

Siskiyou County, California · Horse · Structure no. 050551000001042

Built
1975
50 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Concrete
Length
77 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Walker Creek Road over Walker Creek is a concrete box beam or girders - single or spread carrying Walker Creek Road over Walker Creek in Siskiyou County, California. It was built in 1975, so it is 50 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 77 ft (23.5 m) long and 15 ft wide.

Location

Open in Google Maps
CarriesWalker Creek Road
CrossesWalker Creek
LocationHorse
RouteFederal Lands Road 46N64
CountySiskiyou County
StateCalifornia
Coordinates41.82141, -123.16428
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
Deck7 GoodSome minor problems.
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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.3 US tons
Inventory rating18.5 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span77 ft (23.5 m)
Deck width15 ft (4.6 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Walker Creek Road over Walker Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Walker Creek Road over Walker 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 Walker Creek Road over Walker Creek carry?

About 50 vehicles per day (latest count).

How long is Walker Creek Road over Walker Creek?

The structure is 77 ft (23.5 m) long with a longest span of 77 ft (23.5 m) and a deck 15 ft wide.

Who owns Walker Creek Road over Walker Creek?

It is owned by the U.S. Forest Service.