US Bridges

IRR - US 2 over Goat Underpass

Fair

Flathead County, Montana · 1M SE Essex · Structure no. P00001182+03311

Built
1981
44 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
2,025
2023 count
Owner
State
State Highway Agency

About this bridge

IRR - US 2 over Goat Underpass is a prestressed concrete box beam or girders - multiple carrying IRR - US 2 over Goat Underpass in Flathead County, Montana. It was built in 1981, so it is 44 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,025 vehicles a day, roughly 5% of them trucks, projected to reach 2,126 by 2043. The structure is 104 ft (31.7 m) long and 44 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesIRR - US 2
CrossesGoat Underpass
Location1M SE Essex
RouteU.S. Route 2
CountyFlathead County
StateMontana
Coordinates48.26226, -113.57707
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating52 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span93 ft (28.3 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,025 (2023)
Projected traffic2,126 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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 Goat Underpass built?

It was built in 1981, making it 44 years old in 2025.

What condition is IRR - US 2 over Goat Underpass in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does IRR - US 2 over Goat Underpass carry?

About 2,025 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is IRR - US 2 over Goat Underpass?

The structure is 104 ft (31.7 m) long with a longest span of 93 ft (28.3 m) and a deck 44 ft wide.

Who owns IRR - US 2 over Goat Underpass?

It is owned by the State Highway Agency.