US Bridges

I-90 E&w over Abandoned Railroad

Good

Silver Bow County, Montana · 2.5M S Opportunity · Structure no. 000000201908001

Built
2019
6 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
15,011
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 E&w over Abandoned Railroad is a concrete culvert carrying I-90 E&w over Abandoned Railroad in Silver Bow County, Montana. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,011 vehicles a day, roughly 15% of them trucks, projected to reach 15,762 by 2043. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesI-90 E&w
CrossesAbandoned Railroad
Location2.5M S Opportunity
RouteInterstate 90
CountySilver Bow County
StateMontana
Coordinates46.06458, -112.77299
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
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating37 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length22 ft (6.6 m)
Longest span22 ft (6.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,011 (2023)
Projected traffic15,762 by 2043
Trucks15%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed6.2 mi (10 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-90 E&w over Abandoned Railroad built?

It was built in 2019, making it 6 years old in 2025.

What condition is I-90 E&w over Abandoned Railroad 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 October 2023.

How much traffic does I-90 E&w over Abandoned Railroad carry?

About 15,011 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I-90 E&w over Abandoned Railroad?

The structure is 22 ft (6.6 m) long with a longest span of 22 ft (6.6 m).

Who owns I-90 E&w over Abandoned Railroad?

It is owned by the State Highway Agency.