The Montana Department of Transportation is working on plans to upgrade the intersection of North 7th Avenue and Griffin Drive/Mandeville Lane.

In order to inform residents about the upgrades, a Self-Guided Virtual Workshop will be live through March 15, 2021.

MDT would like to hear your comments and input on this important project to improve the operation of the intersection.

According to MDT, increased traffic at the intersection of North 7th Avenue and Griffin Drive is causing substantial congestion and delay.

The primary goals of this project are:

  • Increase safety
  • Reduce congestion
  • Construct lasting improvements
  • Reduce maintenance
  • Construct sidewalks and bike paths to create connectivity with existing facilities
  • Minimize impacts to adjacent property

In order to reduce congestion at the intersection, MDT plans to;

  • Widen Griffin Drive and add a left-turn lane at the intersection. This will create dual left-turn lanes heading south towards I-90.
  • Widen Mandeville Lane to create an additional lane at the intersection.
  • Widen North 7th Avenue to provide three northbound and southbound lanes at the intersection including left-turn lanes, and right-turn and through lanes.

The upgrades will also reduce maintenance at the intersection by using concrete pavement instead of asphalt for most of the project. Concrete pavement is more durable and needs less maintenance than asphalt. MDT will also be constructing boulevard using stamped brick-red concrete rather than grass. Boulevard is the buffer between the sidewalk or bike path and the road.

For more information about the planned upgrades at the intersection of North 7th Avenue and Griffin Drive, and to submit a comment, click here.

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