US Bridges

STC2815;WARM Sprgs over Warm Springs Creek

Fair

Blaine County, Idaho · 2.6 W. Ketchum · Structure no. 000000000019555

Built
1955
70 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
560
2023 count
Owner
County
County Highway Agency

About this bridge

STC2815;WARM Sprgs over Warm Springs Creek is a steel stringer/multi-beam or girder carrying STC2815;WARM Sprgs over Warm Springs Creek in Blaine County, Idaho. It was built in 1955, so it is 70 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 560 vehicles a day, roughly 2% of them trucks, projected to reach 840 by 2042. The structure is 52 ft (15.9 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSTC2815;WARM Sprgs
CrossesWarm Springs Creek
Location2.6 W. Ketchum
RouteCounty Highway 2815
CountyBlaine County
StateIdaho
Coordinates43.68194, -114.41953
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating22 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 15
Structure length52 ft (15.9 m)
Longest span50 ft (15.2 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic560 (2023)
Projected traffic840 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$535,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC2815;WARM Sprgs over Warm Springs Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is STC2815;WARM Sprgs 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 September 2023.

How much traffic does STC2815;WARM Sprgs over Warm Springs Creek carry?

About 560 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is STC2815;WARM Sprgs over Warm Springs Creek?

The structure is 52 ft (15.9 m) long with a longest span of 50 ft (15.2 m) and a deck 25 ft wide.

Who owns STC2815;WARM Sprgs over Warm Springs Creek?

It is owned by the County Highway Agency.