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NOTICE:

The Traffic, Parking, and Transportation Department will be open to members of the public, by appointment only, Monday through Thursday, for select services. Details about how to access these services online or book an in-person appointment are available on our street occupancy permit (moving vans, moving crates, and tool trucks), parking ticket, and parking permit (residents and visitors) pages. Call 617-349-4700 (voice), 711 (relay), or email tpt@cambridgema.gov for assistance.

A map showing the streets around the project area. The Project Area, Mass Ave between Trowbridge St and Inman St is highlighted.

Mid-Mass Ave Safety Improvement Project

Project Description + Goals

Through this quick-build project we will install separated bike lanes from Massachusetts Avenue between Trowbridge St to Inman St. Separated bike lanes create space that is physically separated from vehicle traffic, which improves safety and comfort for people biking. Our toolbox includes pavement markings, signs, and flex posts.

Goals

  • Improve safety for people biking in the project area
  • Improve safety for people walking at existing crosswalks
  • Improve safety for transit riders with enhanced markings and signage at bus stops
  • Identify opportunities to accommodate the loading needs of businesses
  • Implement changes in line with our Vision Zero Action Plan and meet the requirements of the Cambridge Cycling Safety Ordinance

Current Update

Thank you to everyone who shared comments during the first feedback period. We are now working to consolidate all of the feedback and create the design plans.

Next Steps

  • We will share the design plans with the public in the early spring. We will give you the opportunity to share feedback on the plans.
  • After the second feedback period, we will finalize and implement the new plan in the late spring. The final plans will be posted online before implementation.

Previous Updates and Background

March 15 - March 28, 2021 - Community Feedback Period

Between March 15 and March 28, 2021 Community Members were invited to weigh in on key decisions related to the design and share other general feedback. We collected feedback through/by:

A map of the existing parking inventory was also provided.

March 15, 2021 - Posters Placed in Project Area

On March 15, 2020 we posted flyers in the project area. The posters had key questions that will inform the design of the project. Mass Ave is wider at some points than at others. As a result, the primary questions are about where parking should be maintained. The signs gave location specific information, a short description of the project, and invited community members to share information about other things that they want us to consider as we develop the design.

  1. Blue posters were used in locations where we have to remove all of the parking. Photo location: Mass Ave at Ellery St
  2. Orange posters were used in locations where we have to remove one side of parking. Photo location: Mass Ave at Clinton St
  3. Yellow posters were used on side streets in locations where we can add meters to existing parking spaces. Photo location: Hancock St at Mass Ave
  4. Green posters were used in locations where we pre-determined that the parking has to be on the south side of the street to accommodate the Senior Center. Photo location: Mass Ave across from Inman St
  5. The green posters also contained information about the option to move the bus stop in front of City Hall to create new parking spaces. Photo location: Mass Ave at Inman St
  6. Pink signs were used on side streets in locations were we aren't making any changes. These signs were simply to alert people about the project. Photo location: Bigelow St at Dottie Doyle Way

A photo collage of the six types of posters that were put out in the project area.

Separated Bike Lane Example

Mt Auburn St at Holyoke St - Before and After

The images below show Mt Auburn St at Holyoke St before and after separated bike lanes were installed as a part of the Inner Mount Auburn Safety Improvement Project.

The left image shows Inner Mt Auburn St with a standard bike lane, travel lane, and a parking lane. The right image shows Inner Mt Auburn St with a bike lane, buffer area with flex posts, a travel lane, a parking lane, and daylighting.

Key Components of Separated Bike Lanes

  • Bike lanes create dedicated space for people who are biking.
  • Buffers (painted lines on the street) create space between people biking and people driving. They help prevent unintentional collisions that could cause serious harm to the people involved. Depending on the location, there may be a parking lane next to the buffer area. In these instances, drivers can use the buffer area to safely get in and out of the car and to load and unload items.
  • Flex posts are placed in the buffer area and serve as a vertical barrier in the buffer area.
  • Travel lanes allow space for people to drive down the street, but can be used by anyone.
  • Green markings help alert people turning from the travel lane that they should look out for people on bikes. These are generally installed at intersections and across driveways.
  • Parking creates space for people to store their vehicles while they are in the area. This part of the street may also be designated as loading zones, which help make it easier for delivery people to do their jobs.
  • Daylighting is when the parking lane is pulled back 20 feet to make it easier for people driving down the street and people waiting to cross the street to see each other. These areas are generally marked with lines on the ground. There may also be flex posts.

Why Install Separated Bike Lanes

Separated bike lanes provide more space and vertical separation between people on bikes and people in cars. More people are comfortable biking in separated bike lanes than in traditional bike lanes or in traffic with cars, buses, and trucks. Separated bike lanes also increase safety for people walking by reducing crossing distances. As we install separated bike lanes, we also look for opportunities to increase visibility at intersections, refresh crosswalk markings, and install appropriate pedestrian crossing signs.

Page was posted on 2/17/2021 5:17 PM
Page was last modified on 3/29/2021 9:01 AM
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