US Bridges

Fs Route No. 280 over NF Grouse Creek

Good

Bonner County, Idaho · NF Grouse · Structure no. 010400000014203

Built
2011
14 years old
Condition
Good
inspected October 2021
Type
Tee Beam
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
40
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

Fs Route No. 280 over NF Grouse Creek is a prestressed concrete tee beam carrying Fs Route No. 280 over NF Grouse Creek in Bonner County, Idaho. It was built in 2011, so it is 14 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 69 ft (21 m) long and 28 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesFs Route No. 280
CrossesNF Grouse Creek
LocationNF Grouse
RouteFederal Lands Road 280
StateIdaho
Coordinates48.45272, -116.37296
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating39.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length69 ft (21 m)
Longest span67 ft (20.4 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2018)
Projected traffic60 by 2045
Trucks—
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
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 Fs Route No. 280 over NF Grouse Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Fs Route No. 280 over NF Grouse 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 October 2021.

How much traffic does Fs Route No. 280 over NF Grouse Creek carry?

About 40 vehicles per day (2018 count).

How long is Fs Route No. 280 over NF Grouse Creek?

The structure is 69 ft (21 m) long with a longest span of 67 ft (20.4 m) and a deck 28 ft wide.

Who owns Fs Route No. 280 over NF Grouse Creek?

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