US Bridges

NFSR 8840 over N.F. Highwood

Good

Chouteau County, Montana · No Data Entered · Structure no. 011504000003005

Built
2001
24 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
32 ft
1 main span
Daily traffic
40
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 8840 over N.F. Highwood is a wood or timber stringer/multi-beam or girder carrying NFSR 8840 over N.F. Highwood in Chouteau County, Montana. It was built in 2001, so it is 24 years old, younger than the Montana average of 47 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 32 ft (9.8 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesNFSR 8840
CrossesN.F. Highwood
LocationNo Data Entered
RouteFederal Lands Road 8840
CountyChouteau County
StateMontana
Coordinates47.47331, -110.59242
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 inspectionSeptember 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (—)
Projected traffic60 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 8840 over N.F. Highwood built?

It was built in 2001, making it 24 years old in 2025.

What condition is NFSR 8840 over N.F. Highwood 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 2024.

How much traffic does NFSR 8840 over N.F. Highwood carry?

About 40 vehicles per day (latest count).

How long is NFSR 8840 over N.F. Highwood?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 16 ft wide.

Who owns NFSR 8840 over N.F. Highwood?

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