US Bridges

Pratt Creek Road over Pratt Creek

Good

Lemhi County, Idaho · 2.0 E. Baker · Structure no. 000000000032718

Built
2015
10 years old
Condition
Good
inspected April 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
33
2023 count
Owner
County
County Highway Agency

About this bridge

Pratt Creek Road over Pratt Creek is a steel stringer/multi-beam or girder carrying Pratt Creek Road over Pratt Creek in Lemhi County, Idaho. It was built in 2015, so it is 10 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 33 vehicles a day, roughly 30% of them trucks, projected to reach 50 by 2039. The structure is 36 ft (11 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesPratt Creek Road
CrossesPratt Creek
Location2.0 E. Baker
RouteCounty Highway 0
StateIdaho
Coordinates45.08558, -113.68408
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating46.1 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33 (2023)
Projected traffic50 by 2039
Trucks30%
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 Pratt Creek Road over Pratt Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is Pratt Creek Road over Pratt 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 April 2022.

How much traffic does Pratt Creek Road over Pratt Creek carry?

About 33 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is Pratt Creek Road over Pratt Creek?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 28 ft wide.

Who owns Pratt Creek Road over Pratt Creek?

It is owned by the County Highway Agency.