US Bridges

NFSR 50375 over Monumental Ck

GoodPosted for load

Valley County, Idaho · No Data Entered · Structure no. 041206000003010

Built
1985
40 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
61 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 50375 over Monumental Ck is a wood or timber stringer/multi-beam or girder carrying NFSR 50375 over Monumental Ck in Valley County, Idaho. It was built in 1985, so it is 40 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 61 ft (18.5 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesNFSR 50375
CrossesMonumental Ck
LocationNo Data Entered
RouteFederal Lands Road 50375
StateIdaho
Coordinates44.95234, -115.18051
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.9 US tons
Inventory rating13.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length61 ft (18.5 m)
Longest span60 ft (18.2 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
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 NFSR 50375 over Monumental Ck built?

It was built in 1985, making it 40 years old in 2025.

What condition is NFSR 50375 over Monumental Ck 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 2023.

How much traffic does NFSR 50375 over Monumental Ck carry?

About 50 vehicles per day (latest count).

How long is NFSR 50375 over Monumental Ck?

The structure is 61 ft (18.5 m) long with a longest span of 60 ft (18.2 m) and a deck 16 ft wide.

Who owns NFSR 50375 over Monumental Ck?

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