US Bridges

Fdr over Warm Springs Creek

Fair

Blaine County, Idaho · 14 Miles West Ketchum · Structure no. 041403000001088

Built
1952
73 years old
Condition
Fair
inspected October 2023
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Fdr over Warm Springs Creek is a wood or timber slab carrying Fdr over Warm Springs Creek in Blaine County, Idaho. It was built in 1952, so it is 73 years old, older than the Idaho average of 45.3 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 30 ft (9.1 m) long and 12 ft wide.

Location

Open in Google Maps
CarriesFdr
CrossesWarm Springs Creek
Location14 Miles West Ketchum
RouteFederal Lands Road 70307
CountyBlaine County
StateIdaho
Coordinates43.64943, -114.52109
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.9 US tons
Inventory rating18.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 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 over Warm Springs Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is Fdr over Warm Springs 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 October 2023.

How much traffic does Fdr over Warm Springs Creek carry?

About 50 vehicles per day (latest count).

How long is Fdr over Warm Springs Creek?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 12 ft wide.

Who owns Fdr over Warm Springs Creek?

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