US Bridges

Fdr 377D over W Fk Potlatch Creek

Good

Latah County, Idaho · 2 MI West of ST HWY · Structure no. 010502000000009

Built
1981
44 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
50 ft
1 main span
Daily traffic
5
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 377D over W Fk Potlatch Creek is a concrete stringer/multi-beam or girder carrying Fdr 377D over W Fk Potlatch Creek in Latah County, Idaho. It was built in 1981, so it is 44 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5 vehicles a day, projected to reach 7 by 2045. The structure is 50 ft (15.3 m) long and 16 ft wide.

CarriesFdr 377D
CrossesW Fk Potlatch Creek
Location2 MI West of ST HWY
RouteFederal Lands Road 377
StateIdaho
Coordinates46.91739, -116.40802
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating—
Inventory rating—

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.3 m)
Longest span47 ft (14.3 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (—)
Projected traffic7 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 377D over W Fk Potlatch Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Fdr 377D over W Fk Potlatch 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 September 2023.

How much traffic does Fdr 377D over W Fk Potlatch Creek carry?

About 5 vehicles per day (latest count).

How long is Fdr 377D over W Fk Potlatch Creek?

The structure is 50 ft (15.3 m) long with a longest span of 47 ft (14.3 m) and a deck 16 ft wide.

Who owns Fdr 377D over W Fk Potlatch Creek?

It is owned by the U.S. Forest Service.