US Bridges

I 94 WB over Smith Creek-Sep CO RD

Fair

Rosebud County, Montana · 2M W Forsyth · Structure no. I00094092+02622

Built
1972
53 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
220 ft
4 main spans
Daily traffic
2,166
2023 count
Owner
State
State Highway Agency

About this bridge

I 94 WB over Smith Creek-Sep CO RD is a prestressed concrete stringer/multi-beam or girder carrying I 94 WB over Smith Creek-Sep CO RD in Rosebud County, Montana. It was built in 1972, so it is 53 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 2,166 vehicles a day, roughly 29% of them trucks, projected to reach 2,274 by 2043. The structure is 220 ft (67.2 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 94 WB
CrossesSmith Creek-Sep CO RD
Location2M W Forsyth
RouteInterstate 94
StateMontana
Coordinates46.25293, -106.72098
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56 US tons
Inventory rating28 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length220 ft (67.2 m)
Longest span67 ft (20.3 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,166 (2023)
Projected traffic2,274 by 2043
Trucks29%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 94 WB over Smith Creek-Sep CO RD built?

It was built in 1972, making it 53 years old in 2025.

What condition is I 94 WB over Smith Creek-Sep CO RD 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 March 2024.

How much traffic does I 94 WB over Smith Creek-Sep CO RD carry?

About 2,166 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is I 94 WB over Smith Creek-Sep CO RD?

The structure is 220 ft (67.2 m) long with a longest span of 67 ft (20.3 m) and a deck 44 ft wide.

Who owns I 94 WB over Smith Creek-Sep CO RD?

It is owned by the State Highway Agency.