US Bridges

Deep Cr. Road over Deep Creek

Good

Lemhi County, Idaho · 14 Miles SW of Salmon Id · Structure no. 041301000034754

Built
2008
17 years old
Condition
Good
inspected October 2024
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
100
2020 count
Owner
Federal
U.S. Forest Service

About this bridge

Deep Cr. Road over Deep Creek is a steel culvert carrying Deep Cr. Road over Deep Creek in Lemhi County, Idaho. It was built in 2008, so it is 17 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2045. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 98.2 mi (158 km).

CarriesDeep Cr. Road
CrossesDeep Creek
Location14 Miles SW of Salmon Id
RouteFederal Lands Road 0
StateIdaho
Coordinates45.09462, -114.15626
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating—

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic150 by 2045
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
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 Deep Cr. Road over Deep Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Deep Cr. Road over Deep 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 October 2024.

How much traffic does Deep Cr. Road over Deep Creek carry?

About 100 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Deep Cr. Road over Deep Creek?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m).

Who owns Deep Cr. Road over Deep Creek?

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