US Bridges

Rattlesnake Ck RD over Rattlesnake Creek (#2)

Good

Lemhi County, Idaho · 15.7 S. 3.1 N. Salmon · Structure no. 000000000032753

Built
2019
6 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

Rattlesnake Ck RD over Rattlesnake Creek (#2) is a steel stringer/multi-beam or girder carrying Rattlesnake Ck RD over Rattlesnake Creek (#2) in Lemhi County, Idaho. It was built in 2019, so it is 6 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 20 vehicles a day, projected to reach 30 by 2039. The structure is 36 ft (11 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesRattlesnake Ck RD
CrossesRattlesnake Creek (#2)
Location15.7 S. 3.1 N. Salmon
RouteCounty Highway 0
CountyLemhi County
StateIdaho
Coordinates44.94033, -113.96614
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width22 ft (6.6 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic30 by 2039
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rattlesnake Ck RD over Rattlesnake Creek (#2) built?

It was built in 2019, making it 6 years old in 2025.

What condition is Rattlesnake Ck RD over Rattlesnake Creek (#2) 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 April 2023.

How much traffic does Rattlesnake Ck RD over Rattlesnake Creek (#2) carry?

About 20 vehicles per day (2023 count).

How long is Rattlesnake Ck RD over Rattlesnake Creek (#2)?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 22 ft wide.

Who owns Rattlesnake Ck RD over Rattlesnake Creek (#2)?

It is owned by the County Highway Agency.