US Bridges

IRR - US 2 over Flynn Creek

Fair

Roosevelt County, Montana · 8M W Wolf Point · Structure no. P00001581+09571

Built
1956
69 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
58 ft
3 main spans
Daily traffic
1,479
2023 count
Owner
State
State Highway Agency

About this bridge

IRR - US 2 over Flynn Creek is a wood or timber stringer/multi-beam or girder carrying IRR - US 2 over Flynn Creek in Roosevelt County, Montana. It was built in 1956, so it is 69 years old, older 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 1,479 vehicles a day, roughly 14% of them trucks, projected to reach 1,553 by 2043. The structure is 58 ft (17.8 m) long and 38 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIRR - US 2
CrossesFlynn Creek
Location8M W Wolf Point
RouteU.S. Route 2
StateMontana
Coordinates48.07121, -105.82561
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating25 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 15
Structure length58 ft (17.8 m)
Longest span19 ft (5.8 m)
Deck width38 ft (11.6 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,479 (2023)
Projected traffic1,553 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$166,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR - US 2 over Flynn Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is IRR - US 2 over Flynn Creek 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 October 2024.

How much traffic does IRR - US 2 over Flynn Creek carry?

About 1,479 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is IRR - US 2 over Flynn Creek?

The structure is 58 ft (17.8 m) long with a longest span of 19 ft (5.8 m) and a deck 38 ft wide.

Who owns IRR - US 2 over Flynn Creek?

It is owned by the State Highway Agency.