US Bridges

Fs Route No. 301 over Merry Creek

Good

Shoshone County, Idaho · 1.1 Mile from Clarkia Id · Structure no. 010404000000197

Built
1954
71 years old, rebuilt 1997
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
37 ft
1 main span
Daily traffic
40
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

Fs Route No. 301 over Merry Creek is a wood or timber stringer/multi-beam or girder carrying Fs Route No. 301 over Merry Creek in Shoshone County, Idaho. It was built in 1954 and reconstructed in 1997, so it is 71 years old, older 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 37 ft (11.3 m) long and 24 ft wide. If it were closed, the detour would be 46.6 mi (75 km).

CarriesFs Route No. 301
CrossesMerry Creek
Location1.1 Mile from Clarkia Id
RouteFederal Lands Road 301
StateIdaho
Coordinates47.01018, -116.23606
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating33.6 US tons
Inventory rating26.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2018)
Projected traffic60 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed46.6 mi (75 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. 301 over Merry Creek built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1997.

What condition is Fs Route No. 301 over Merry 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 July 2024.

How much traffic does Fs Route No. 301 over Merry Creek carry?

About 40 vehicles per day (2018 count).

How long is Fs Route No. 301 over Merry Creek?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 24 ft wide.

Who owns Fs Route No. 301 over Merry Creek?

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