US Bridges

Montana Ave over U1024-25-RR

Poor

Yellowstone County, Montana · Billings-Montana Ave · Structure no. U01020001+08852

Built
1960
65 years old, rebuilt 1986
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
1,713 ft
6 main spans
Daily traffic
8,576
2023 count
Owner
State
State Highway Agency

About this bridge

Montana Ave over U1024-25-RR is a steel stringer/multi-beam or girder carrying Montana Ave over U1024-25-RR in Yellowstone County, Montana. It was built in 1960 and reconstructed in 1986, so it is 65 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 8,576 vehicles a day, projected to reach 9,004 by 2043. The structure is 1,713 ft (522.1 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMontana Ave
CrossesU1024-25-RR
LocationBillings-Montana Ave
RouteCity Street 113
CountyYellowstone County
StateMontana
Coordinates45.76735, -108.53296
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6 (+27 approach)
Design loadHS 20
Structure length1,713 ft (522.1 m)
Longest span77 ft (23.5 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,576 (2023)
Projected traffic9,004 by 2043
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Montana Ave over U1024-25-RR built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1986.

What condition is Montana Ave over U1024-25-RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Montana Ave over U1024-25-RR carry?

About 8,576 vehicles per day (2023 count).

How long is Montana Ave over U1024-25-RR?

The structure is 1,713 ft (522.1 m) long with a longest span of 77 ft (23.5 m) and a deck 32 ft wide.

Who owns Montana Ave over U1024-25-RR?

It is owned by the State Highway Agency.