US Bridges

Fort Maginnis RD over Fords Creek 141

Good

Fergus County, Montana · 12M N Cheadle · Structure no. L14231001+00401

Built
2012
13 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Fort Maginnis RD over Fords Creek 141 is a steel stringer/multi-beam or girder carrying Fort Maginnis RD over Fords Creek 141 in Fergus County, Montana. It was built in 2012, so it is 13 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 63 ft (19.1 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesFort Maginnis RD
CrossesFords Creek 141
Location12M N Cheadle
RouteCounty Highway 14231
StateMontana
Coordinates47.17684, -109.12061
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 inspectionMarch 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length63 ft (19.1 m)
Longest span60 ft (18.3 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 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 closed123.7 mi (199 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 Fort Maginnis RD over Fords Creek 141 built?

It was built in 2012, making it 13 years old in 2025.

What condition is Fort Maginnis RD over Fords Creek 141 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 March 2023.

How much traffic does Fort Maginnis RD over Fords Creek 141 carry?

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

How long is Fort Maginnis RD over Fords Creek 141?

The structure is 63 ft (19.1 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.

Who owns Fort Maginnis RD over Fords Creek 141?

It is owned by the County Highway Agency.