Designing the new Mount Auburn Street
The Project Team submitted the 25% Design to the Massachusetts Department of Transportation (MassDOT) in January 2020, after the conceptual design was endorsed by the Town Council in November 2018. MassDOT held a 25% Design Public Hearing on November 4, 2021. Since then, the project team has been working toward 100% Design plans for the corridor.
Video Updates - June 2023
In June 2023, the Project Team recorded a three-part video series to provide an update on the Final Design of the project in advance of the Open House on June 20, 2023. View renderings and landscape/streetscape boards from the Open House on the Documents page.
Status Update
Final Roadway Design Overview
Landscape/Streetscape Overview
Design Plans
Final Design Plans (last updated August 2023)
Landscape Plans (11x17)
Traffic Sign & Pavement Marking Plans - Patten St to School St
Traffic Sign & Pavement Marking Plans - School St to Cambridge City Line
Final Design Roll Plans (last updated June 2023)
Download the final design roll plans for Mount Auburn Street:
Final Design Plans by Segment - 8.5 x 11” (print-friendly), smaller file sizes:
Previous conceptual plans and supporting materials can be found on the Documents page.
View the 100% Design Plans Submitted to MassDOT
Signing & Pavement Marking Plans - shows the final layout for the roadway
Landscape Plans & Details - to be further discussed at our June Open House
Key Plan - shows the full corridor and how it is broken down by plan sheet
Design Improvements by Mode
The City of Watertown has continuously refined the design of the Mount Auburn Street corridor based on public and stakeholder feedback received to date. Below is a summary of the improvements by mode.
For Pedestrians
Curb extensions at selected locations to shorten crossing distances
New sidewalks
Improved pedestrian signal equipment, including warning signage and flashing beacons (pedestrians will press a button that causes a light to flash, alerting drivers that there are pedestrians who are crossing the street in the crosswalk)
To the maximum extent feasible, retain existing green spaces and mature trees on Mount Auburn Street and add new street trees and landscaping, where possible
Accessible ramps that comply with the Americans with Disabilities Act (ADA)
New street furniture, such as benches, lighting, and more
Reclaimed public amenity/open space at Boylston Street, Bigelow Ave., and Arlington Street at Grove Street
For Bicyclists
Improved bicycle accommodations, including:
Double buffered bike lanes (see this example on N. Beacon Street) in two segments on Mount Auburn Street: between Walnut Street and Dexter Avenue, and between Prentiss Street and the Cambridge City Line
A single painted buffer between parking and bike lane near Coolidge Square, where the road is narrower
A traditional bike lane or shared lane in even more constrained areas on the west side of the corridor near Watertown Square
New bicycle signage with information about the regional bicycle network
New bicycle parking locations
For Vehicles
One vehicular travel lane in each direction with left turn lanes at selected intersections to help improve safety and traffic flow
Two lane approaches in each direction and at key signalized intersections including Common Street, Walnut Street, Boylston Street, School Street, and Arlington Street
Updated traffic signal timings to improve traffic flow
Upgraded or new drainage and green infrastructure for improved stormwater management and to manage localized street flooding
Maintenance of the number of existing legal parking spaces within the Coolidge Square and Common Street business districts
For Public Transit
Longer bus turnouts at bus stops so buses can better pull out of the flow of traffic and to the bus stops
Relocated bus stops to improve bus operations and reliability
Intersection upgrades, including Transit Signal Prioritization (TSP) to reduce the number of red lights for buses
Keeps dedicated bus-bike lane near the Cambridge city line in place
Keeps bus queue jump/right-turn lanes at Walnut Street and School Street in place
Better amenities at bus stops
See more details about proposed changes to MBTA Bus Route 71