Montana Department of Transportation

Malcolm “Mack” Long, Director

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Main Content

Public Involvement

North 7th Ave & Griffin Drive - Bozeman

Public Involvement

Project Overview

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

Overview Map showing proposed intersection improvements

Overview Map
Click to view full size

Reduce congestion by:

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

Reduce maintenance by:

  • Using concrete pavement instead of asphalt for most of the project. Concrete pavement is more durable and needs less maintenance than asphalt.
  • Constructing boulevard using stamped brick-red concrete rather than grass. Boulevard is the buffer between the sidewalk or bike path and the road.

Construct bicycle and pedestrian facilities including:

  • Modern pedestrian crosswalks including push buttons with audio for pedestrian crossing signal
  • Americans with Disabilities Act (ADA) compliant sidewalk ramps
  • Continuous 5 to 6-foot wide sidewalk on both sides of North 7th Avenue and Mandeville Lane
  • Continuous 10-foot wide bike path (for both pedestrians and bicyclists) along both sides of Griffin Drive
  • 4 to 6-foot wide shoulders along North 7th Avenue
  • Safety railing on edge of the bike/pedestrian facility, where required

Minimize impacts to adjacent property by:

  • Constructing within existing right-of-way by using retaining wall, where required
  • Developing a construction zone sequencing plan to minimize impacts to businesses

The following are photos of the proposed roadway cross sections of the different legs of the intersection. The cross-section name (such as Section A-A) corresponds with the location and direction on the Overview Map above.

Section A-A

Section-A-A.jpg
North 7th Avenue (South Leg – looking north) - Click to view full size

Section B-B

Section-B-B.jpg
North 7th Avenue (South Leg – looking north) - Click to view full size

Section C-C

Section-C-C.jpg
North 7th Avenue (North Leg – looking north) - Click to view full size

Section D-D

Section-D-D.jpg
North 7th Avenue (North Leg – looking north) - Click to view full size

Section E-E

Section-E-E.jpg
Mandeville Lane (Looking east) - Click to view full size

Section F-F

Section-F-F.jpg
Griffin Drive (Looking east) - Click to view full size

Section G-G

Section-G-G.jpg
Griffin Drive (Looking east) - Click to view full size

UPN 9312000