US Bridges

Pines Road over Little Salmon River

Fair

Adams County, Idaho · 0.6 N. 0.3 W. Pinehurst · Structure no. 000000000026460

Built
1925
100 years old
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
96 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Pines Road over Little Salmon River is a steel truss - thru carrying Pines Road over Little Salmon River in Adams County, Idaho. It was built in 1925, so it is 100 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 50 vehicles a day, projected to reach 75 by 2042. The structure is 96 ft (29.3 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPines Road
CrossesLittle Salmon River
Location0.6 N. 0.3 W. Pinehurst
RouteCounty Highway 0
CountyAdams County
StateIdaho
Coordinates45.26075, -116.34061
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length96 ft (29.3 m)
Longest span90 ft (27.4 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Pines Road over Little Salmon River built?

It was built in 1925, making it 100 years old in 2025.

What condition is Pines Road over Little Salmon River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Pines Road over Little Salmon River carry?

About 50 vehicles per day (2023 count).

How long is Pines Road over Little Salmon River?

The structure is 96 ft (29.3 m) long with a longest span of 90 ft (27.4 m) and a deck 20 ft wide.

Who owns Pines Road over Little Salmon River?

It is owned by the County Highway Agency.