US Bridges

Gunsight RD over Two Medicine Canal 01

FairPosted for load

Glacier County, Montana · 10M W Cutbank · Structure no. L18444002+06001

Built
1989
36 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
23 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Gunsight RD over Two Medicine Canal 01 is a wood or timber stringer/multi-beam or girder carrying Gunsight RD over Two Medicine Canal 01 in Glacier County, Montana. It was built in 1989, so it is 36 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 23 ft (7 m) long and 18 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesGunsight RD
CrossesTwo Medicine Canal 01
Location10M W Cutbank
RouteCounty Highway 18444
CountyGlacier County
StateMontana
Coordinates48.63878, -112.5084
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating27 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span23 ft (6.9 m)
Deck width18 ft (5.5 m)
Roadway width10 ft (3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$36,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Gunsight RD over Two Medicine Canal 01 built?

It was built in 1989, making it 36 years old in 2025.

What condition is Gunsight RD over Two Medicine Canal 01 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 November 2023.

How much traffic does Gunsight RD over Two Medicine Canal 01 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Gunsight RD over Two Medicine Canal 01?

The structure is 23 ft (7 m) long with a longest span of 23 ft (6.9 m) and a deck 18 ft wide.

Who owns Gunsight RD over Two Medicine Canal 01?

It is owned by the County Highway Agency.