US Bridges

Red Hill over Unnamed Creek

Good

Siskiyou County, California · No Data Entered · Structure no. 051459000001042

Built
1982
43 years old
Condition
Good
inspected August 2023
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Red Hill over Unnamed Creek is a steel culvert carrying Red Hill over Unnamed Creek in Siskiyou County, California. It was built in 1982, so it is 43 years old, younger 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 21 ft (6.5 m) long.

CarriesRed Hill
CrossesUnnamed Creek
LocationNo Data Entered
RouteFederal Lands Road 40N43
Coordinates41.23371, -122.44274
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation*: *
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating—
Inventory rating—

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.5 m)
Longest span0 ft (0 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 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 Red Hill over Unnamed Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Red Hill over Unnamed Creek 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 August 2023.

How much traffic does Red Hill over Unnamed Creek carry?

About 50 vehicles per day (latest count).

How long is Red Hill over Unnamed Creek?

The structure is 21 ft (6.5 m) long.

Who owns Red Hill over Unnamed Creek?

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