US Bridges

Road over Butte Fork Creek

Poor

Siskiyou County, California · No Data Entered · Structure no. 061001000001017

Built
1951
74 years old, rebuilt 1983
Condition
Poor
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
71 ft
1 main span
Daily traffic
10
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Butte Fork Creek is a steel stringer/multi-beam or girder carrying Road over Butte Fork Creek in Siskiyou County, California. It was built in 1951 and reconstructed in 1983, so it is 74 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 10 vehicles a day, projected to reach 15 by 2045. The structure is 71 ft (21.6 m) long and 16 ft wide. If it were closed, the detour would be 30.4 mi (49 km).

CarriesRoad
CrossesButte Fork Creek
LocationNo Data Entered
RouteFederal Lands Road 10400
Coordinates41.97253, -123.18431
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating46.1 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length71 ft (21.6 m)
Longest span68 ft (20.7 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2006)
Projected traffic15 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed30.4 mi (49 km)
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road over Butte Fork Creek built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1983.

What condition is Road over Butte Fork Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.

How much traffic does Road over Butte Fork Creek carry?

About 10 vehicles per day (2006 count).

How long is Road over Butte Fork Creek?

The structure is 71 ft (21.6 m) long with a longest span of 68 ft (20.7 m) and a deck 16 ft wide.

Who owns Road over Butte Fork Creek?

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