US Bridges

691 Camp Cr. Road over Madge Creek

Good

Lincoln County, Montana · No Data Entered · Structure no. 011404000019412

Built
2011
14 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

691 Camp Cr. Road over Madge Creek is a steel stringer/multi-beam or girder carrying 691 Camp Cr. Road over Madge Creek in Lincoln County, Montana. It was built in 2011, so it is 14 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 63 ft (19.1 m) long and 18 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
Carries691 Camp Cr. Road
CrossesMadge Creek
LocationNo Data Entered
RouteFederal Lands Road 691
CountyLincoln County
StateMontana
Coordinates48.31971, -115.82031
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHL 93
Structure length63 ft (19.1 m)
Longest span60 ft (18.3 m)
Deck width18 ft (5.4 m)
Roadway width16 ft (4.8 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 691 Camp Cr. Road over Madge Creek built?

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

What condition is 691 Camp Cr. Road over Madge 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 2024.

How much traffic does 691 Camp Cr. Road over Madge Creek carry?

About 50 vehicles per day (latest count).

How long is 691 Camp Cr. Road over Madge Creek?

The structure is 63 ft (19.1 m) long with a longest span of 60 ft (18.3 m) and a deck 18 ft wide.

Who owns 691 Camp Cr. Road over Madge Creek?

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