US Bridges

Welch RD over Two Medicine Canal 016

GoodClosed to traffic

Glacier County, Montana · 12M SW Cut Bank · Structure no. L18021002+00001

Built
1960
65 years old, rebuilt 2024
Condition
Good
inspected September 2024
Type
Culvert
Steel Continuous
Length
48 ft
2 main spans
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Welch RD over Two Medicine Canal 016 is a steel continuous culvert carrying Welch RD over Two Medicine Canal 016 in Glacier County, Montana. It was built in 1960 and reconstructed in 2024, so it is 65 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. Its operating status is: closed to all traffic.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 48 ft (14.6 m) long and 21 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesWelch RD
CrossesTwo Medicine Canal 016
Location12M SW Cut Bank
RouteCounty Highway 18021
StateMontana
Coordinates48.5962, -112.57828
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating10 US tons
Inventory rating10 US tons

Structure

Structure typeCulvert
MaterialSteel Continuous
DeckSteel plate
Main spans2
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span21 ft (6.4 m)
Deck width21 ft (6.3 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$74,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Welch RD over Two Medicine Canal 016 built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2024.

What condition is Welch RD over Two Medicine Canal 016 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 Welch RD over Two Medicine Canal 016 carry?

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

How long is Welch RD over Two Medicine Canal 016?

The structure is 48 ft (14.6 m) long with a longest span of 21 ft (6.4 m) and a deck 21 ft wide.

Who owns Welch RD over Two Medicine Canal 016?

It is owned by the County Highway Agency.