US Bridges

Johnson RD over Sand Coulee Creek 076

Good

Cascade County, Montana · 2M N Tracy · Structure no. L07311000+01001

Built
2002
23 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Johnson RD over Sand Coulee Creek 076 is a steel stringer/multi-beam or girder carrying Johnson RD over Sand Coulee Creek 076 in Cascade County, Montana. It was built in 2002, so it is 23 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesJohnson RD
CrossesSand Coulee Creek 076
Location2M N Tracy
RouteCounty Highway 7311
StateMontana
Coordinates47.43991, -111.14358
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 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44 US tons
Inventory rating27 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span23 ft (7.1 m)
Deck width22 ft (6.8 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Johnson RD over Sand Coulee Creek 076 built?

It was built in 2002, making it 23 years old in 2025.

What condition is Johnson RD over Sand Coulee Creek 076 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 Johnson RD over Sand Coulee Creek 076 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Johnson RD over Sand Coulee Creek 076?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7.1 m) and a deck 22 ft wide.

Who owns Johnson RD over Sand Coulee Creek 076?

It is owned by the County Highway Agency.