US Bridges

Fdr 39 over Cherokee Creek

Fair

Sierra County, California · S6 T19N R9E · Structure no. 051753000001009

Built
1940
85 years old
Condition
Fair
inspected September 2024
Type
Girder and Floorbeam System
Steel
Length
50 ft
2 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 39 over Cherokee Creek is a steel girder and floorbeam system carrying Fdr 39 over Cherokee Creek in Sierra County, California. It was built in 1940, so it is 85 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 50 ft (15.2 m) long and 12 ft wide.

CarriesFdr 39
CrossesCherokee Creek
LocationS6 T19N R9E
RouteCounty Highway SIE-0
Coordinates39.537, -121.01438
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation*: *
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating—

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length50 ft (15.2 m)
Longest span26 ft (7.9 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 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 Fdr 39 over Cherokee Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Fdr 39 over Cherokee 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 Fdr 39 over Cherokee Creek carry?

About 50 vehicles per day (latest count).

How long is Fdr 39 over Cherokee Creek?

The structure is 50 ft (15.2 m) long with a longest span of 26 ft (7.9 m) and a deck 12 ft wide.

Who owns Fdr 39 over Cherokee Creek?

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