US Bridges

Lemhi Road over Canyon Creek

Good

Lemhi County, Idaho · 0.8 N. 0.2 E. Leadore · Structure no. 000000000034665

Built
2012
13 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Lemhi Road over Canyon Creek is a steel stringer/multi-beam or girder carrying Lemhi Road over Canyon Creek in Lemhi County, Idaho. It was built in 2012, so it is 13 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 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2039. The structure is 36 ft (11 m) long and 25 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesLemhi Road
CrossesCanyon Creek
Location0.8 N. 0.2 E. Leadore
RouteCounty Highway 0
StateIdaho
Coordinates44.69203, -113.35406
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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating53.2 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length36 ft (11 m)
Longest span35 ft (10.7 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic150 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lemhi Road over Canyon Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is Lemhi Road over Canyon 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 2024.

How much traffic does Lemhi Road over Canyon Creek carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Lemhi Road over Canyon Creek?

The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 25 ft wide.

Who owns Lemhi Road over Canyon Creek?

It is owned by the County Highway Agency.