US Bridges

4626 Stanley CR RD over Stanley CR

Fair

Lincoln County, Montana · Just Past JCT With 4605 · Structure no. 011404000000057

Built
1963
62 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
29 ft
1 main span
Daily traffic
99
2017 count
Owner
Federal
U.S. Forest Service

About this bridge

4626 Stanley CR RD over Stanley CR is a wood or timber stringer/multi-beam or girder carrying 4626 Stanley CR RD over Stanley CR in Lincoln County, Montana. It was built in 1963, so it is 62 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 99 vehicles a day, projected to reach 148 by 2045. The structure is 29 ft (8.7 m) long and 15 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
Carries4626 Stanley CR RD
CrossesStanley CR
LocationJust Past JCT With 4605
RouteFederal Lands Road 4626
CountyLincoln County
StateMontana
Coordinates48.2817, -115.89246
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length29 ft (8.7 m)
Longest span27 ft (8.2 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2017)
Projected traffic148 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 4626 Stanley CR RD over Stanley CR built?

It was built in 1963, making it 62 years old in 2025.

What condition is 4626 Stanley CR RD over Stanley CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does 4626 Stanley CR RD over Stanley CR carry?

About 99 vehicles per day (2017 count).

How long is 4626 Stanley CR RD over Stanley CR?

The structure is 29 ft (8.7 m) long with a longest span of 27 ft (8.2 m) and a deck 15 ft wide.

Who owns 4626 Stanley CR RD over Stanley CR?

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