US Bridges

Pole Creek Road over Salmon River

GoodPosted for load

Blaine County, Idaho · 0.1S 0.2E Sawtooth City · Structure no. 000000000023760

Built
1974
51 years old
Condition
Good
inspected September 2024
Type
Slab
Wood or Timber
Length
24 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Pole Creek Road over Salmon River is a wood or timber slab carrying Pole Creek Road over Salmon River in Blaine County, Idaho. It was built in 1974, so it is 51 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 25% of them trucks, projected to reach 75 by 2042. The structure is 24 ft (7.3 m) long and 15 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPole Creek Road
CrossesSalmon River
Location0.1S 0.2E Sawtooth City
RouteFederal Lands Road 0
StateIdaho
Coordinates43.90194, -114.79
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2042
Trucks25%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$305,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pole Creek Road over Salmon River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Pole Creek Road over Salmon River 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 September 2024.

How much traffic does Pole Creek Road over Salmon River carry?

About 50 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is Pole Creek Road over Salmon River?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 15 ft wide.

Who owns Pole Creek Road over Salmon River?

It is owned by the County Highway Agency.