US Bridges

3043: Warm Spring over Big Timber Creek

Good

Lemhi County, Idaho · 5 MI W of ID28 · Structure no. 000000000L59856

Built
1979
46 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
25
2011 count
Owner
Federal
Bureau of Land Management

About this bridge

3043: Warm Spring over Big Timber Creek is a concrete slab carrying 3043: Warm Spring over Big Timber Creek in Lemhi County, Idaho. It was built in 1979, so it is 46 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 35 by 2040. The structure is 24 ft (7.3 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Carries3043: Warm Spring
CrossesBig Timber Creek
Location5 MI W of ID28
RouteFederal Lands Road 0
StateIdaho
Coordinates44.61528, -113.39778
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.8 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span21 ft (6.4 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2011)
Projected traffic35 by 2040
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Land Management
Maintained byBureau of Land Management
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 3043: Warm Spring over Big Timber Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is 3043: Warm Spring over Big Timber Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does 3043: Warm Spring over Big Timber Creek carry?

About 25 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is 3043: Warm Spring over Big Timber Creek?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.4 m) and a deck 17 ft wide.

Who owns 3043: Warm Spring over Big Timber Creek?

It is owned by the Bureau of Land Management.