North 7th Ave & Griffin Drive - Bozeman - Project Improvements | Montana Department of Transportation (MDT)

Increased traffic at the intersection of North 7th Avenue and Griffin Drive is causing congestion and delays.

The primary goals of this project are:

Reduce congestion.
Reduce long-term maintenance costs.
Improve bicycle and pedestrian mobility.

Overview Map showing proposed intersection improvements

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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 a boulevard using stamped brick-red concrete rather than grass. Boulevard is the buffer between the sidewalk or bike path and the road (see graphic B-B below).

Improve bicycle and pedestrian mobility including:

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

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.