US Bridges

Tyler Cutoff over Mcdonald Creek 125

Fair

Fergus County, Montana · 1M S Grassrange · Structure no. L14207000+02001

Built
1975
50 years old, rebuilt 2005
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
57 ft
2 main spans
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Tyler Cutoff over Mcdonald Creek 125 is a steel stringer/multi-beam or girder carrying Tyler Cutoff over Mcdonald Creek 125 in Fergus County, Montana. It was built in 1975 and reconstructed in 2005, so it is 50 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 5 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 57 ft (17.4 m) long and 19 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesTyler Cutoff
CrossesMcdonald Creek 125
Location1M S Grassrange
RouteCounty Highway 14207
CountyFergus County
StateMontana
Coordinates47.01733, -108.81191
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23 US tons
Inventory rating17 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadUnknown
Structure length57 ft (17.4 m)
Longest span39 ft (12 m)
Deck width19 ft (5.9 m)
Roadway width19 ft (5.9 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 closed13 mi (21 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 Tyler Cutoff over Mcdonald Creek 125 built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2005.

What condition is Tyler Cutoff over Mcdonald Creek 125 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 July 2024.

How much traffic does Tyler Cutoff over Mcdonald Creek 125 carry?

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

How long is Tyler Cutoff over Mcdonald Creek 125?

The structure is 57 ft (17.4 m) long with a longest span of 39 ft (12 m) and a deck 19 ft wide.

Who owns Tyler Cutoff over Mcdonald Creek 125?

It is owned by the County Highway Agency.