Coolidge Road Complete Streets Project

The next regular meeting of the Coolidge Oversight Taskforce is scheduled for Monday, October 25, 2021, starting promptly at 7:00 pm in the Council Chambers of Berkley City Hall, 3338 Coolidge.

Attached you will find a tentative agenda for the meeting. If you are unable to attend this meeting, please contact:

Matthew Baumgarten
City Manager
(248) 658-3350

Mike McGuinness
Interim Executive Director, DDA

To view the Public Notice, click here.

To view the Agenda, click here.

July 2021 Update
Berkley has received the results of studies and is making them publicly available. The estimation is that only 80 to 85% of those who will return to commuting on a daily basis have done so as of these studies. These were taken during the school year so those volumes were captured and reflected in the data.

This data will be reviewed by our Coolidge Road Oversite Taskforce. As stated in previous updates, the City does not want to rush to make decisions based upon depressed volumes. The primary goals of this portion of the pilot project focus on safety and functionality. Our primary concern continues be obtaining reliable and telling data to score this project based on the evaluation matrix.

May/June 2021 Traffic Data
Evaluation Matrix

What is the Coolidge Road Diet?
The Coolidge Highway Complete Streets Initiative involves a 24-month evaluation period to determine if re-striping Coolidge between 11 Mile and 12 Mile from four lanes to three will improve traffic flow and make the road safer and friendlier for pedestrians and bicyclists. Part of the study incorporates a 12-month review of the eight safety metrics that are part of the Coolidge Road Right-Sizing and Safety Corridor Metrics Matrix. The Berkley Downtown Development Authority is financing the project and can provide more details about the project at

Current Challenges to Drivers and Pedestrians with Coolidge 
The current configuration of Coolidge between 11 Mile and 12 Mile was designed to allow vehicles to travel from one destination to another. Despite being built for the purpose it does not excel at it. Some of the potential problems with the Coolidge design include:

  • Drivers in the interior lanes experience stop-and-go traffic movement while waiting for cars ahead of them to complete a left turn.
  • Drivers attempting to reach a destination along the corridor find it difficult to make a left turn across two lanes of traffic.
  • There were 80 accidents recorded between 2014 and 2016. Assuming just two vehicles per accident, that is 160 drivers in a short span. In 2017, there were an additional 37 crashes along Coolidge, 13 crashes South of Catalpa, and 24 crashes North of Catalpa.
  • The design of the road creates blind spots for drivers and pedestrians, making new crosswalks difficult to install and causing pedestrians to walk a quarter-mile before crossing at an intersection. With limited crossings, pedestrians often attempt to cross all four lanes of traffic illegally and dangerously.
To review the full Narrative & Measurements for the Coolidge Road 12-Month Safety Review CLICK HERE BUTTON

Wondering how the Coolidge Road Diet is being measured? 
Click here to download the comprehensive metrics matrix that will be used to measure the project's success (updated 4/15/2021 to account for pandemic delays).

Click here
 to read how removing lanes from a busy street can actually make traffic better.

The Data Is In!

 To view the six-month presentation on the Road Diet CLICK HERE BUTTON

Check out the latest six-month raw data report on the Complete Streets Initiative

We Want to Hear from You! 
Got feedback on the Coolidge Road Diet? Send us your comments about the plan to

You can also download the Communications Strategy showing tactics that have been implemented.

Click here to read the comments that have been received as of August 12, 2019.

Multi-Community Bike Trail System
An important element of the Coolidge Highway Road Diet is the bike lanes which will run in both directions from 11 Mile to 12 Mile. These lanes are intended to become a part of a proposed multi-community bike system that includes Huntington Woods and Oak Park. Below you will find a map showing how the three communities plan to develop an integrated bike system, along with informative material on bike/driver safety. 

Bike System

Understanding Bike Lanes

Click here
 for "What Every Driver Should Know About Bike Lanes."

Click here to read "What Every Michigan Bicyclist Must Know."

Click here to read "What Every Young Michigan Bicyclist Must Know."

Need a quick refresher on the proper hand signals while you're biking in traffic?
Check out the Southeast Michigan Council of Governments graphic below. You can also learn more at 




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