R9E-Discuss Update On The Transportation Master Plan -Grieco-MIAMIBEACH
City of Miomi Beoch, 1700 Convention Center Drive, Miomi Beoch, Florido 33,l 39, www.miomibeochfl.gov
COMMISSION MEMORANDUM
TO:Mayor Philip Levine and Members bf the City
FROM: Jimmy L. Morales, City Manager
DATE: May 6, 2015
SUBJECT: DISCUSSION REGARDING UPDATE ON THE TRANSPORTATION MASTER PLAN
BACKGROUND
!n July 2014, the City of Miami Beach engaged Gannet Fleming, lnc. to complete a
Transportation Master Plan for the City. The Transportation Master Plan will provide a data-
driven overview of the existing conditions in terms of transportation and mobility in the City,
establish the transportation vision for the City, provide guidelines for future transportation
systems and mobility strategies and suggest policy modifications to improve the efficiency of our
transportation network. To achieve this, the Transportation Master Plan consultant team has
evaluated and analyzed existing multimodal data and conditions, forecasted future conditions,
and coordinated with agencies and stakeholders. ln addition, the consultant team will develop a
project bank, prioritize the projects in the project bank, and identify internal and externalfunding
sources to implement the projects identified in the project bank.
On March 18,2015, the City held a Commission Workshop on transportation which included an
overview of the Transportation Master Plan, and the existing transportation conditions and
trends in the City, and ongoing and planned transportation projects and initiatives At the
Workshop, the Commission supported the proposed Modal Prioritization strategy presented by
the project team which establishes a mode hierarchy which prioritizes pedestrians, followed by
transit, bicycles, and freight, and lastly, private vehicles. ln addition, the project team will
conduct a Public Meeting to present the existing and future conditions of the City's
transportation network and provide an opportunity for the community to interact with the project
team and provide input on the draft plan.
ANALYSIS
Currently, the Transportation Master Plan team has completed the data collection effort, existing
conditions report, and future conditions forecasting. Given that the Transportation Master Plan is
a comprehensive multimodal plan, Level of Service (LOS) is being generated for all modes.
At the April 15, 2015 City Commission meeting, the City Commission expressed concerns with
failing intersections and their effect on the overall network. LOS is a letter grade scale used as a
qualitative measure of the efficiency of intersections and corridors. LOS is determined (A-F) that
is based on intersection delay. It is important to note that LOS is not a measure of the safety of
an intersection. The key factor in determining the efficiency of an intersection is the volume-
capacity ratio (V/C). The V/C compares the number of vehicles traveling through an intersection
to the capacity of that intersection based on number of lanes, width of lanes, speed, type of
signalization, and other characteristics. Generally, when the V/C value is close to one (1), the
intersection is approaching capacity and is assigned a LOS E. A V/C greater than one (1)
implies the intersection is over capacity and failing (i.e., LOS F). lntersections rated as LOS E
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or LOS F are considered critical intersections.
The table below depicts the list of critical intersections presented at the March 18th
Transportation Workshop as well as an analysis of potential solutions. At this time, the
Transportation Master Plan team is in the process of analyzing each of the critical intersections.
Recommendations to improve through-put at these intersections will be included as part of the
Transportation Master Plan project bank.
The capacity issues identified for these intersections relate to vehicular capacity. The
aforementioned mode hierarchy endorsed by the City Commission will modify the approach to
Level of Service in the City of Miami Beach by transitioning from the concept of vehicular
capacity to person-trip capacity. As mentioned at the Transportation Workshop, mass transit
projects will increase people throughput, thus enhancing the efficiency of our transportation
network. While not of the same order of magnitude, proposed lntelligent Transportation System
solutions, including Adaptive Traffic Signal Control, will also help to improve through-put and the
efficiency of the City's roadway network.
The Administration anticipates presenting a draft Transportation Master Plan, including the draft
Bicycle/Pedestrian Master Plan as a component, to the City Commission in July 2015, for
discussion and input. A final draft Transportation Master Plan is anticipated to be presented to
the City Commission for adoption in August 2015.
qkon Road and 5th street
lack of capacity due to the excess demand from
Eastbound leg and insufficient capacity in the transition
to Citv streets
lmproved technology and optimization along Alton Boad and 5th
Street to reduce the number of stops at the downstream signals. This
alternative requires further analysis.
\lton Road and 17th Str€el .ack of capacity due to the existing geometic conditions
lmproved geometry submitted by the City has been reviewed by FDOT
and comments have been submitted to the City. The City is currently
addressins those comments.
\lton Road and Dade Boulevard Lack of capacity due to downstream signal
This intersection is being reviewed as part of the Alton Road and 17th
street geometric concept. Staff believes that this intersection will
improve if the geometric improvements at 17th Street and Alton Road
can be implemented. This intersection will also benefit from the West
Avenue Bridee.
llst and lndian creek Drive High volumes observed in all four legs, however E-W
movement has priority.
The City engaBed FAU to conduct a study along the 41st Street
:orridor for Adaptive Traffic Signal Control as part of the City's
ntellisent Transportation Svstem Proiect-
llst Street and Collins Avenue
Lack of coordination in signal timing between the
northbound left turn at 41st Street and Collins Avenue
and 41st Street and lndian Creek Drive.
Ihe City is working with the Traffic Monitoring and Management
conduct signal timing modifications. City staff is reviewing geometric
imorovements for the intersection
l3rd Street and Alton Road Congestion due to Mt. Sinai & Julia Tuttle Causeway.Monitor this intersection once the Alton Road construction concludes
and Julia Tuttle Traffic has normalized.
63rd and lndian Creek Drive
Bridge openings during the peak hour and poor
coordination in the downstream signals (lndian Creek
Drive between 63rd Street and 71st Street)
The City has sent a letter to the United States Coast Guard to limit
bridge openings to off-peak hours- The City is engaging a consultant t(
conduct a traffic signal optimization study along lndian Creek Drive
between 63rd Street and 71st Street.
Abbot and lndian Creek Drive High volumes observed. Lack of capacity.
The City is engaging a consultant to conduct a traffic signal
optiml2ation study along lndian Creek orive between 63rd Street and
71st Street; however, there is a capacity is cut in half in the
southbound direction when Abbott Avenue and Indian Creek merse.
71st and Collins Avenue Lack of capacity.TMP team is currently evaluating this intersection.
71st and lndian creek Drire lack of Capacity due to existing geometric conditions
The city worked with the county in 2014 to improve signal timing at
this intersection. Further analysis o{ the existing conditions will be
completed as part of the signal optimization study along tndian Creek
0rive between 63rd Street and 7lst Street.
Alton Road and Michigan Avenue lnsufficient capacity for the Southbound left turn FDOT will modify the intersection as part of an upcoming construction
proiect to add a second southbound left turn lane.
MacArthur Causeway and Terminal lsland
Significant demand trom Terminal lsland during the
afternoon peak causes significant stops along MacArthur
Causewav
TMP team is currently evaluating this intersection.
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Commission Memorandum - Dlscussion Regarding An Update On The Transportation Master Plan
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CONCLUSION
The Administration will continue to provide periodic updates on the progress of the
Transportation Master Plan and other projects that will improve mobility at the critical
intersections identified. This item is presented to the City Commission for discussion and further
irput.
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