US Bridges

I 94 over Int P-23 Broadus

Good

Custer County, Montana · SE Edge Miles City · Structure no. 000000202001986

Built
2019
6 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
155 ft
2 main spans
Daily traffic
2,349
2023 count
Owner
State
State Highway Agency

About this bridge

I 94 over Int P-23 Broadus is a prestressed concrete stringer/multi-beam or girder carrying I 94 over Int P-23 Broadus in Custer 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 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 2,349 vehicles a day, roughly 23% of them trucks, projected to reach 2,466 by 2043. The structure is 155 ft (47.1 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 94
CrossesInt P-23 Broadus
LocationSE Edge Miles City
RouteInterstate 94
StateMontana
Coordinates46.39446, -105.82261
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating28 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length155 ft (47.1 m)
Longest span76 ft (23.1 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,349 (2023)
Projected traffic2,466 by 2043
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
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 P-23 Broadus built?

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

What condition is I 94 over Int P-23 Broadus 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 2024.

How much traffic does I 94 over Int P-23 Broadus carry?

About 2,349 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I 94 over Int P-23 Broadus?

The structure is 155 ft (47.1 m) long with a longest span of 76 ft (23.1 m) and a deck 42 ft wide.

Who owns I 94 over Int P-23 Broadus?

It is owned by the State Highway Agency.