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

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 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.

Section A-A

Section-A-A-lg.jpg

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

Section B-B

Section-B-B-lg.jpg

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

Section C-C

Section-C-C-lg.jpg

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

Section D-D

Section-D-D-lg.jpg

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

Section E-E

Section-E-E-lg.jpg

Mandeville Lane (Looking east) - Click to view full size

Section F-F

Section-F-F-lg.jpg

Griffin Drive (Looking east) - Click to view full size

Section G-G

Section-G-G-lg.jpg

Griffin Drive (Looking east) - Click to view full size