US Bridges

I 94 over Vehicle Pass

Good

Custer County, Montana · 13M NE Miles City · Structure no. I00094151+03081

Built
1986
39 years old
Condition
Good
inspected July 2023
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
4,697
2023 count
Owner
State
State Highway Agency

About this bridge

I 94 over Vehicle Pass is a steel culvert carrying I 94 over Vehicle Pass in Custer County, Montana. It was built in 1986, so it is 39 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 4,697 vehicles a day, roughly 23% of them trucks, projected to reach 4,932 by 2043. The structure is 20 ft (6.2 m) long.

CarriesI 94
CrossesVehicle Pass
Location13M NE Miles City
RouteInterstate 94
StateMontana
Coordinates46.53513, -105.65039
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,697 (2023)
Projected traffic4,932 by 2043
Trucks23%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed—
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 over Vehicle Pass built?

It was built in 1986, making it 39 years old in 2025.

What condition is I 94 over Vehicle Pass 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 July 2023.

How much traffic does I 94 over Vehicle Pass carry?

About 4,697 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I 94 over Vehicle Pass?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m).

Who owns I 94 over Vehicle Pass?

It is owned by the State Highway Agency.