US Bridges

Elk Creek Road over Elk Creek

Fair

Siskiyou County, California · Elk-Thompson · Structure no. 050552000001026

Built
1949
76 years old
Condition
Fair
inspected September 2024
Type
Truss - Deck
Steel
Length
123 ft
3 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Elk Creek Road over Elk Creek is a steel truss - deck carrying Elk Creek Road over Elk Creek in Siskiyou County, California. It was built in 1949, so it is 76 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 123 ft (37.5 m) long and 24 ft wide.

CarriesElk Creek Road
CrossesElk Creek
LocationElk-Thompson
RouteFederal Lands Road 16N05
Coordinates41.6785, -123.3476
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation*: *
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating—

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length123 ft (37.5 m)
Longest span80 ft (24.4 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 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 Elk Creek Road over Elk Creek built?

It was built in 1949, making it 76 years old in 2025.

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

About 50 vehicles per day (latest count).

How long is Elk Creek Road over Elk Creek?

The structure is 123 ft (37.5 m) long with a longest span of 80 ft (24.4 m) and a deck 24 ft wide.

Who owns Elk Creek Road over Elk Creek?

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