US Bridges

Lowrey RD over Fort Shaw Canal 061

Good

Cascade County, Montana · 5M NW Simms · Structure no. L07001000+03001

Built
2001
24 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Lowrey RD over Fort Shaw Canal 061 is a steel stringer/multi-beam or girder carrying Lowrey RD over Fort Shaw Canal 061 in Cascade 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 30 ft (9.2 m) long and 21 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesLowrey RD
CrossesFort Shaw Canal 061
Location5M NW Simms
RouteCounty Highway 7001
StateMontana
Coordinates47.50943, -112.01379
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 inspectionDecember 2023
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating38 US tons
Inventory rating23 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length30 ft (9.2 m)
Longest span27 ft (8.2 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.2 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 closed14.9 mi (24 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 Lowrey RD over Fort Shaw Canal 061 built?

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

What condition is Lowrey RD over Fort Shaw Canal 061 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 December 2023.

How much traffic does Lowrey RD over Fort Shaw Canal 061 carry?

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

How long is Lowrey RD over Fort Shaw Canal 061?

The structure is 30 ft (9.2 m) long with a longest span of 27 ft (8.2 m) and a deck 21 ft wide.

Who owns Lowrey RD over Fort Shaw Canal 061?

It is owned by the County Highway Agency.