US Bridges

Stony Creek over Stony Lake Creek

Good

Sanders County, Montana · Stony Creek · Structure no. 011605000024355

Built
2015
10 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Stony Creek over Stony Lake Creek is a prestressed concrete stringer/multi-beam or girder carrying Stony Creek over Stony Lake Creek in Sanders County, Montana. It was built in 2015, so it is 10 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 8 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 37 ft (11.3 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesStony Creek
CrossesStony Lake Creek
LocationStony Creek
RouteFederal Lands Road 7675
StateMontana
Coordinates47.79292, -115.22554
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 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 closed98.2 mi (158 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 Stony Creek over Stony Lake Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is Stony Creek over Stony Lake 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 2023.

How much traffic does Stony Creek over Stony Lake Creek carry?

About 50 vehicles per day (latest count).

How long is Stony Creek over Stony Lake Creek?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 16 ft wide.

Who owns Stony Creek over Stony Lake Creek?

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