US Bridges

US 191 over Abandoned RR

Good

Wheatland County, Montana · Harlowton · Structure no. P00045043+06791

Built
1969
56 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
230 ft
4 main spans
Daily traffic
805
2023 count
Owner
State
State Highway Agency

About this bridge

US 191 over Abandoned RR is a prestressed concrete stringer/multi-beam or girder carrying US 191 over Abandoned RR in Wheatland County, Montana. It was built in 1969, so it is 56 years old, older 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 805 vehicles a day, roughly 10% of them trucks, projected to reach 845 by 2043. The structure is 230 ft (70.1 m) long and 47 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 191
CrossesAbandoned RR
LocationHarlowton
RouteU.S. Route 191
StateMontana
Coordinates46.43268, -109.84214
Functional classRural Minor Arterial

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span77 ft (23.5 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic805 (2023)
Projected traffic845 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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 US 191 over Abandoned RR built?

It was built in 1969, making it 56 years old in 2025.

What condition is US 191 over Abandoned RR 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 September 2024.

How much traffic does US 191 over Abandoned RR carry?

About 805 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is US 191 over Abandoned RR?

The structure is 230 ft (70.1 m) long with a longest span of 77 ft (23.5 m) and a deck 47 ft wide.

Who owns US 191 over Abandoned RR?

It is owned by the State Highway Agency.