US Bridges

King Lane over Warm Spring Creek

FairPosted for load

Power County, Idaho · 2.0 S. 1.4 W. Rockland · Structure no. 000000000023530

Built
1965
60 years old, rebuilt 1972
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
80
2023 count
Owner
County
County Highway Agency

About this bridge

King Lane over Warm Spring Creek is a steel stringer/multi-beam or girder carrying King Lane over Warm Spring Creek in Power County, Idaho. It was built in 1965 and reconstructed in 1972, so it is 60 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 80 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2039. The structure is 26 ft (7.9 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesKing Lane
CrossesWarm Spring Creek
Location2.0 S. 1.4 W. Rockland
RouteCounty Highway 0
StateIdaho
Coordinates42.54517, -112.90072
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating23 US tons
Inventory rating14 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span22 ft (6.7 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2023)
Projected traffic120 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed8.1 mi (13 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$270,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was King Lane over Warm Spring Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1972.

What condition is King Lane over Warm Spring 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 April 2023.

How much traffic does King Lane over Warm Spring Creek carry?

About 80 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is King Lane over Warm Spring Creek?

The structure is 26 ft (7.9 m) long with a longest span of 22 ft (6.7 m) and a deck 24 ft wide.

Who owns King Lane over Warm Spring Creek?

It is owned by the County Highway Agency.