US Bridges

Pollock Road over Little Salmon R;pollock

Fair

Idaho County, Idaho · 7.8 S. 2.3 W. Riggins · Structure no. 000000000029180

Built
1927
98 years old
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel
Length
95 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Pollock Road over Little Salmon R;pollock is a steel truss - thru carrying Pollock Road over Little Salmon R;pollock in Idaho County, Idaho. It was built in 1927, so it is 98 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 5 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2039. The structure is 95 ft (29 m) long and 23 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesPollock Road
CrossesLittle Salmon R;pollock
Location7.8 S. 2.3 W. Riggins
RouteCounty Highway 0
CountyIdaho County
StateIdaho
Coordinates45.30986, -116.36178
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length95 ft (29 m)
Longest span90 ft (27.4 m)
Deck width23 ft (6.9 m)
Roadway width18 ft (5.5 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 closed8.1 mi (13 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$859,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pollock Road over Little Salmon R;pollock built?

It was built in 1927, making it 98 years old in 2025.

What condition is Pollock Road over Little Salmon R;pollock 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 2023.

How much traffic does Pollock Road over Little Salmon R;pollock carry?

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

How long is Pollock Road over Little Salmon R;pollock?

The structure is 95 ft (29 m) long with a longest span of 90 ft (27.4 m) and a deck 23 ft wide.

Who owns Pollock Road over Little Salmon R;pollock?

It is owned by the County Highway Agency.