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Aerial
shown of Interstate 95 Looking South over C-24 Canal
CROSSTOWN
PARKWAY/I-95 INTERCHANGE
PROJECT
OVERVIEW
The City
of Port St. Lucie (City) in cooperation with the Florida Department
of Transportation, is conducting a PD&E Study to evaluate
new interchange ramps at Crosstown Parkway and I-95. The need
to provide connections to the interstate highway system is
driven by extraordinary growth in the City and proposed growth
west of I-95. The forecasted future demands reflect an additional
200,000 people by 2030 and over 26 million square feet of
non-residential development within the City limits and in
the newly annexed areas west of I-95. This will add several
hundred thousand new vehicles each day to the area roadways
and interchange network.
The System
Interchange Justification Report (SIJR) prepared for this
project evaluated the need for two new interchanges along
I-95 at Crosstown Parkway and Becker Road. The SIJR evaluated
the complete I-95 interchange system from St. Lucie West Boulevard
to Martin Highway (SR 714) and determined that the two proposed
interchange locations along with the three existing interchanges
would meet the projected future traffic demand in the area.
The SIJR recommended the Tight Diamond configuration for the
new Crosstown Parkway/I-95 Interchange. Click here to view
the Proposed Interchange. More...
By 2010
Crosstown Parkway will be constructed as a six-lane roadway
from west of Village Parkway to Floresta Drive. The City has
accelerated the schedule for these improvements. For this
current study, the improvements to Crosstown Parkway are considered
as an existing condition. By 2025, Crosstown Parkway is planned
as a four-lane roadway from Range Line Road to west of Village
Parkway.
This project
is consistent with the St. Lucie County Metropolitan Planning
Organization (MPO) 2025 Long Range Transportation Plan (LRTP),
adopted March 1, 2001, and per Resolution No. 98-06, dated
and adopted December 3, 1998. On February 1, 2006, the MPO
approved the 2030 LRTP Update that included the Crosstown
Parkway/I-95 interchange. The City of Port St. Lucie's (City)
Transportation Element of the adopted Comprehensive Plan identifies
the need for this project. No Federal or State funding is
being sought for this interchange project.
ALTERNATIVES
No
Build Alternative
The No Build Alternative assumes that area-wide roadway improvements
and improvements to Crosstown Parkway will be implemented,
but there will be no ramps connecting Crosstown Parkway with
I-95. Traffic conditions on I-95 will continue to degrade
and the levels of congestion will increase along this corridor
with the No Build Alternative. This will result in longer
travel times and possibly compromise the development of the
western sections of the City. Safety may be compromised with
increased emergency response times and decreased evacuation
times.
Transportation
System Management (TSM) Alternative
Several hundred thousand new vehicles will be added each day
to the area roadway and interchange network due to the anticipated
development west of I-95. This amount of traffic cannot be
absorbed by improvements such as high occupancy vehicle lanes,
signalization modifications, or ramp metering. The need for
this project is a result of capacity and access requirements;
therefore, the TSM Alternative would not be a viable solution.
Build
Alternative
Widening and extending Crosstown Parkway will occur regardless
of the outcome of this project. Therefore, the Build Alternative
for this PD&E includes the construction of the Tight Diamond
interchange ramps only. The interchange ramps would alleviate
capacity deficiency and congestion on parallel roadways and
intersections, while improving regional traffic flow along
I-95. Reduced travel time and fuel cost savings should also
result from the direct access between Crosstown Parkway and
I-95.
TYPICAL
SECTION
The typical
sections for each of the four interchange ramps are identical.
The elements that comprise the ramp typical section include:
a 15-foot travel lane, a six-foot inside shoulder, and a six-foot
outside shoulder. The I-95 southbound bridge over the SFWMD
C-24 Canal will be widened from three to four lanes to accommodate
the interchange ramp from Crosstown Parkway. The limits of
the northbound exit ramp begins north of the bridge; therefore,
widening of the northbound I-95 bridge is not required. Click
here to view the typical section. More...
PROJECT
IMPACTS
Minimizing
impacts to the community, while providing the needed roadway
improvements, are goals of every PD&E Study. By providing
the Tight Diamond interchange, future traffic demands can
be met while, at the same time, limiting impacts to the environment.
This project analyzed the impacts to the environment associated
with providing a Tight Diamond interchange and determined
that the impacts were minimal. There are no impacts to residential,
business properties or historic structures. No archaeological
sites were found within the project limits. Community services
such as schools, religious facilities or medical complexes
would not be impacted by the proposed project. There are no
contamination, water quality air quality or noise impacts
associated with this project. This area is located outside
the 100-year floodplain and no floodplain impacts are expected.
The project is not expected to have an adverse impact on threatened
or endangered species or their critical habitat.
The construction
of the proposed ramps would affect the edges of three wetlands.
Wetland impacts that result from the construction of this
project will be mitigated pursuant to Chapter 373.4137 Florida
Statutes to satisfy all mitigation requirements of Part IV,
Chapter 373, Florida Statutes and Title 33, United States
Code 1344. The final mitigation plan will be determined during
the permitting stage of the project.
RIGHT-OF-WAY
and CONSTRUCTION COSTS
With the
proposed Tight Diamond interchange configuration, right-of-way
needs are minimized to approximately 23 acres. No Federal
or State funding will be sought to purchase the additional
right-of-way required. All required right-of-way is either
owned by the City or will soon be acquired by or transferred
to the City. The estimated cost for the construction of the
Crosstown Parkway and I-95 Interchange ramps is approximately
$15.4 million.
PROJECT
SCHEDULE
Final
design for this project is expected to be completed in late
2006. The construction of the Crosstown Parkway and I-95 Interchange
will begin in early 2007 and will take approximately 18 months.
FINAL
DECISION
A final
decision regarding the proposed interchange has not been made.
At this time, the Build Alternative has been tentatively selected
as the Preferred Alternative. However, a decision
will not be made until the after public comments have been
received and analyzed.
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