US Bridges

IRR - US 2 over RR

Good

Glacier County, Montana · 1M SW Browning · Structure no. P00001220+04891

Built
1997
28 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
156 ft
3 main spans
Daily traffic
2,515
2023 count
Owner
State
State Highway Agency

About this bridge

IRR - US 2 over RR is a prestressed concrete stringer/multi-beam or girder carrying IRR - US 2 over RR in Glacier County, Montana. It was built in 1997, so it is 28 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 2,515 vehicles a day, roughly 4% of them trucks, projected to reach 2,641 by 2043. The structure is 156 ft (47.5 m) long and 50 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIRR - US 2
CrossesRR
Location1M SW Browning
RouteU.S. Route 2
StateMontana
Coordinates48.54134, -113.03435
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating57 US tons
Inventory rating39 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span61 ft (18.7 m)
Deck width50 ft (15.2 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,515 (2023)
Projected traffic2,641 by 2043
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR - US 2 over RR built?

It was built in 1997, making it 28 years old in 2025.

What condition is IRR - US 2 over 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 February 2023.

How much traffic does IRR - US 2 over RR carry?

About 2,515 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is IRR - US 2 over RR?

The structure is 156 ft (47.5 m) long with a longest span of 61 ft (18.7 m) and a deck 50 ft wide.

Who owns IRR - US 2 over RR?

It is owned by the State Highway Agency.