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A communication transmitted from Louis A. DePasquale, City Manager, relative to Awaiting Report Item Number 18-121 and 18-135, regarding safety improvements on Museum Way and the Craigie Bridge
City of Cambridge
Community Development Department – Iram Farooq, Assistant City Manager
Traffic, Parking, and Transportation – Joseph E. Barr, Director
MEMORANDUM
To:
Louis A. DePasquale, City Manager
From: Joseph E. Barr, Director of Traffic, Parking, and Transportation
Iram Farooq, Assistant City Manager for Community Development
Date: December 5, 2018
Re:
Awaiting Report 18-121 – Safety Improvements on Museum Way and the Craigie Bridge
This memo is in response to Order 2 from the November 19, 2018 City Council Meeting (Awaiting
Report 18-121) and Order 14 from the December 3, 2018 City Council Meeting, requesting that we
consult with the Commonwealth of Massachusetts on potential safety improvements at the
intersection of Museum Way and the Craigie Bridge, particularly in light of the recent fatality that
occurred at this location.
Craigie Bridge
Because the Craigie Bridge is controlled jointly by the Department of Conservation and Recreation
(DCR) and the Massachusetts Department of Transportation (MassDOT), Cambridge does not have
the ability to directly install improved bicycle facilities on this segment of road. However, City staff
have been advocating for the installation of improved bicycle facilities on the bridge over the course
of many years, dating back into the 1990s during the design and construction of the Central
Artery/Tunnel (CA/T) project. More recently, we have advocated for improvements to this segment
of roadway as part of the MassDOT Accelerated Bridge Program, which included the reconstruction
of the Craigie Bridge. While these advocacy efforts led to a commitment to install bicycle lanes on
this important connection, these planned improvements have been deferred by the state for
multiple years due to the potential impacts of nearby construction projects, specifically the
reconstruction of the Longfellow Bridge and the replacement of the North Washington Street Bridge.
The timeline below provides greater detail on the history of past efforts to improve the bicycle
facilities on Craigie Bridge:
• 1994: City of Cambridge staff, advocacy organizations, community members, and members of
the New Charles River Basin (NCRB) Citizens’ Advisory Committee (CAC), which was appointed
as part of the CA/T mitigation requirements, began advocating for improvements to bicycle
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accommodation on the Craigie Bridge. City staff on the CAC continued to advocate for bicycle
facility improvements throughout the CAC process.
• 1994-2008: City staff continued to advocate for improved bicycle facilities on the bridge as
part of the ongoing NCRB CAC process and other discussions. The state did perform an
evaluation of the design and the traffic impacts of adding bicycle lanes but continued to
prioritize right-of-way for motor vehicle traffic, which precluded major changes to the design
of the bridge to better accommodate cyclists.
• 2008: The state initiated the reconstruction of the Craigie Bridge as part of the Accelerated
Bridge Program, and initially included an option of widening the south sidewalk to create a
substandard multi-use path. This was not considered acceptable by the public or by the City,
and the advocacy community developed a conceptual plan for bicycle lanes, which the City
supported. Based on this, a design was developed with bicycle lanes, which was accepted by
the City, advocates, and the community.
• 2010-2011: MassDOT committed to installation of bicycle lanes on the bridge, but the
decision was made by the state to defer implementation of these lanes due to the detour
route for the planned Longfellow Bridge construction. City staff objected to this decision, but
no change was made.
• 2016: MassDOT restated its commitment to install bicycle lanes on the Craigie Bridge once
Longfellow Bridge construction was complete, and publicly shared plans that included bicycle
lanes.
• 2018: As the Longfellow Bridge reached substantial completion, MassDOT indicated that
installation of bicycle lanes would occur during the summer of 2018. However, DCR and
MassDOT again decided to defer implementation of bicycle lanes due to concerns about the
detour route for the North Washington Street Bridge construction.
Over the past several months, we have been in ongoing discussions with both DCR and MassDOT,
advocating that they follow through on these past commitments and finally install bicycle lanes on
the Craigie Bridge. The most recent meetings took place this past summer, once construction on the
Longfellow Bridge was complete. These discussions focused on the feasibility of adding bicycle lanes
this fall, given the recently started replacement of the North Washington Street Bridge, which was
predicted to lead to increased traffic on Craigie Bridge. Because of this uncertainty, these discussions
were ongoing when the recent fatality occurred on November 8.
Since that time, we have been in frequent contact with Commissioner Leo Roy from DCR, who has
indicated a strong willingness to move forward with the installation of bicycle lanes, subject to
discussions about the details of the design and the potential impacts. Specifically, installing bicycle
lanes that meet current best practices will require removing one travel lane from the bridge, which
will potentially have impacts on vehicle capacity and access to the Museum of Science (the
previously proposed bicycle lanes did not require these changes to vehicular traffic, but that design is
no longer considered acceptable). Both DCR and MassDOT appear to be strongly committed to
installing bicycle lanes in the near future, but believe that there is a need for additional public and
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stakeholder discussions prior to implementation (particularly given that installation of roadway
striping changes won’t be possible until the spring of 2019 due to weather constraints). In addition,
while DCR and MassDOT have developed designs for adding bicycle lanes to the bridge, there are a
number of design details that need to be worked out, including changes to signal timing and
potential turn restrictions into the Museum of Science’s garage (which was not contemplated in the
prior designs that had been developed). Throughout these discussions, City staff have continued to
advocate strongly for improving bicycle facilities, and for the need to accept certain impacts on
motorized vehicles in return for safety improvements for vulnerable users.
Museum Way
At the same time that these regarding the Craigie Bridge discussions have been ongoing with DCR
and MassDOT, City staff have been considering potential changes to Museum Way, to improve safety
for cyclists and attempt to reduce travel speeds. Based on this review, we have developed two
specific and related potential improvements:
• Narrow the travel lanes on Museum Way to the standard width of 10.5 feet, which should
help to limit vehicle speeds.
• Using the extra street width created by narrowing the travel lanes on Museum Way, widen
the existing bicycle lanes on Museum Way and add buffers to the bicycle lanes to create
additional separation between motor vehicles and bicycles in this street segment.
As with the bicycle lanes being proposed by DCR and MassDOT, these changes to roadway striping
can’t be implemented until the weather improves in the spring of 2019. In addition, we plan to work
with DCR to implement changes to the signal timing of the Museum Way/Craigie Bridge intersection,
with the goal of creating a fully protected phase when pedestrians and cyclists can cross from the
south side of the bridge to the north side of the bridge without any conflicts with motor vehicles.
Moving forward, the next steps towards improving safety in this area include the following:
• DCR and MassDOT plan to hold a public meeting on bicycle safety improvements on the
Craigie Bridge on December 18th at 6:30pm, at the Museum of Science. This meeting is
expected to include a discussion of multiple options for improving bicycle facilities on the
Craigie Bridge, including the opportunity for the public to provide comments and suggest
improvements.
• City staff will further develop a design for narrowing the vehicle travel lanes and widening the
bicycle lanes on Museum Way, with the goal of discussing these changes with the community
over the winter and implementing roadway striping changes when the weather warms in the
spring.
• City staff will work with DCR to investigate changes to signal timing at the Museum
Way/Craigie Bridge intersection to create a protected crossing phase for pedestrians and
cyclists. If these improvements can be made prior to the roadway striping changes, we will
work to implement the changes during the winter months.
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We will continue to advocate to DCR and MassDOT to make bicycle safety improvements on this key
link between Boston and Cambridge, while also developing designs that will help to reduce speeds
and improve safety on Museum Way. As these safety projects move forward, we will keep the City
Council, residents, and other stakeholders updated on progress in planning, design, and
implementation.