Montana Department of Transportation

Malcolm “Mack” Long, Director


View the Governor’s Coronavirus Task Force site for more information.

MDT News

MDT To Resume Construction On I15/I90 Interchange Near Butte

BUTTE, MONT. - The Montana Department of Transportation (MDT) is
returning to the Butte area to continue improvements on roadways and
bridges at the junction of I 15 and I 90 near Butte. 

crews will resume updating road surfaces on April 15, 2021. Travelers
should expect to see bridge and guardrail improvements, seal coat,
pavement markings, and new signs installed in the area. The public
can expect delays of up to 15 minutes, reduced speeds, and two-way
traffic when passing through the project. 

A unique feature of this
project is the installation of sinusoidal rumble strips or low-noise
rumble strips. These new low-noise rumble strips are cut into the
roadway shoulder in a wave rather than the traditional rumble strip
rectangular pattern, reducing the amount of noise they produce. 

MDT's use of these new rumble strips across the state where possible
is part of continuing efforts to keep roadways safe while listening
to and respecting the needs and concerns of neighbors in our

The use of low-noise rumble strips is becoming more
common, with states like Minnesota seeing continued decreases in
fatalities and serious injuries when the strips are included with
other safety measures on roadways. 

This project is part of MDT's
"Pavement Preservation Program," an effort aimed at keeping good
roads in safe and working condition. The program works to improve
roads and extend their usable life through maintenance before more
severe repairs need to be made. 

For updates and to hear about
closures, openings, and other construction activities - text 1590 to
555-888 to sign up for text updates or email us at to be added to the project list. 

accessible formats of this document will be provided on request.
Persons who need an alternative format should contact the Office of
Civil Rights, Department of Transportation, 2701 Prospect Avenue, PO
Box 201001, Helena, MT 59620. Telephone 406-444-5416 or Montana Relay
Service at 711. 

The Montana Department of Transportation together
with its construction contracting partners continue to take the
COVID-19 pandemic very seriously. Construction projects on Montanas
roads and bridges are considered an "essential" operation and will
continue moving forward as scheduled in 2021. Construction workers
will continue several measures to help keep employees, contractors
and the public safe during the construction season. Some of the
measures include following social distancing and good hygiene
guidelines, and not reporting to work if showing symptoms of illness.
For more information visit