US Bridges

SH 3 over W. Fk. Potlatch River

Good

Latah County, Idaho · 3.5 N. Bovill · Structure no. 000000000010081

Built
2020
5 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
460
2023 count
Owner
State
State Highway Agency

About this bridge

SH 3 over W. Fk. Potlatch River is a prestressed concrete box beam or girders - multiple carrying SH 3 over W. Fk. Potlatch River in Latah County, Idaho. It was built in 2020, so it is 5 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 460 vehicles a day, roughly 44% of them trucks, projected to reach 690 by 2042. The structure is 46 ft (14 m) long and 36 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesSH 3
CrossesW. Fk. Potlatch River
Location3.5 N. Bovill
RouteState Highway 3
CountyLatah County
StateIdaho
Coordinates46.91158, -116.39258
Functional classRural Minor Arterial

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 protection9 ExcellentNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length46 ft (14 m)
Longest span43 ft (13.1 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic460 (2023)
Projected traffic690 by 2042
Trucks44%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 3 over W. Fk. Potlatch River built?

It was built in 2020, making it 5 years old in 2025.

What condition is SH 3 over W. Fk. Potlatch 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 July 2023.

How much traffic does SH 3 over W. Fk. Potlatch River carry?

About 460 vehicles per day (2023 count), of which roughly 44% are trucks.

How long is SH 3 over W. Fk. Potlatch River?

The structure is 46 ft (14 m) long with a longest span of 43 ft (13.1 m) and a deck 36 ft wide.

Who owns SH 3 over W. Fk. Potlatch River?

It is owned by the State Highway Agency.