US Bridges

I 94 over Int East Forsyth

Fair

Rosebud County, Montana · East Forsyth · Structure no. I00094095+02361

Built
1977
48 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
200 ft
3 main spans
Daily traffic
2,749
2023 count
Owner
State
State Highway Agency

About this bridge

I 94 over Int East Forsyth is a prestressed concrete stringer/multi-beam or girder carrying I 94 over Int East Forsyth in Rosebud County, Montana. It was built in 1977, so it is 48 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 6 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 2,749 vehicles a day, roughly 20% of them trucks, projected to reach 2,969 by 2043. The structure is 200 ft (61 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 94
CrossesInt East Forsyth
LocationEast Forsyth
RouteInterstate 94
StateMontana
Coordinates46.26693, -106.66506
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length200 ft (61 m)
Longest span91 ft (27.7 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,749 (2023)
Projected traffic2,969 by 2043
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 94 over Int East Forsyth built?

It was built in 1977, making it 48 years old in 2025.

What condition is I 94 over Int East Forsyth 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 June 2023.

How much traffic does I 94 over Int East Forsyth carry?

About 2,749 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is I 94 over Int East Forsyth?

The structure is 200 ft (61 m) long with a longest span of 91 ft (27.7 m) and a deck 44 ft wide.

Who owns I 94 over Int East Forsyth?

It is owned by the State Highway Agency.