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In November
2004, Maricopa County voters approved a 20 year extension
of a half-cent sales tax until December 31, 2025, to fund
a comprehensive package of transportation improvements as
part of the Regional
Transportation Plan. Funding for the plan, which includes
$9 billion in regional freeway improvements in Maricopa
County, became effective January 1, 2006.
Freeway
planning to determine potential future corridors and freeway
improvements is conducted well in advance of design and
construction. Area population growth, future land use, jurisdictional
responsibilities and other factors are used to determine
the need, feasibility and general location of future freeway
improvements.
The
study stage establishes the location (alignment) and basic
characteristics (number of lanes, type of traffic interchange,
etc.) of a roadway. Accompanying this are environmental
studies (noise, economic impacts, etc.), identification
and evaluation of alternatives, general cost estimates,
coordination with public and private partners and the determination
of feasibility to move to the design phase.
The design
of a roadway involves several stages of detailed engineering
and technical review and interim levels of approval. Project
information is shared and discussed with the public at project
milestones, and public input is considered in the evaluation
of alternatives. The final design of the roadway is represented
in plans and specifications that construction contractors
use to prepare construction bids.
Road
construction for projects is based on detailed plans and
specifications provided to the contractor following the
approved design. As the construction process advances, changes
may occur that are influenced by a variety of factors. ADOT
continually looks for ways to improve the construction process
for maximum efficiency and minimal community impact. Once
built, a roadway will be maintained and improved over time
as a result of future growth and transportation needs.
Current Construction
Princess
Drive to Loop 202
(Red Mountain Freeway) |
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Construction of Freeway Management Systems modifications
(FMS) underway
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| I-17
to Princess Dr. |
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Construction underway
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| SR
51 to Loop 101 |
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Construction of High Occupancy Vehicle (HOV) lanes
underway
- Construction completed winter 2009 (anticipated)
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| 64th
St. Traffic Interchange |
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Construction underway
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Project:
Loop 101 (Pima Freeway),
Princess Drive to Loop 202 (Red Mountain Freeway) HOV
Lanes
Overview:
HOV are being added to 15 miles within the median of Loop
101. Coffman Specialties, Inc., was awarded the $47.5
million contract. Temporary concrete barriers will be
placed near the median, similar to that on the SR 51 between
Shea Boulevard and Loop 101; the construction crews will
work inside of that barrier. One auxiliary lane or merging
lane will be added between Cactus and Raintree Roads in
the northbound lane only.
The Freeway Management System modifications began in fall
2007 for the entire length of Loop 101. Using sensors,
freeway cameras and the latest communication technology,
the Valley’s Intelligent Transportation Systems
keep traffic flowing by providing incident management
personnel with information about real-time traffic condition.
Schedule:
Construction
September 2007 through late fall 2008
A Fact
Sheet on this project is available. (file
size: 1.5MB)
Project:
Loop 101 (Pima Freeway),
Interstate 17 to Princess Drive Freeway Management Systems
(FMS) Modifications
Overview:
This segment will add Freeway Management Systems (FMS)
modifications will include variable message signage and
traffic monitoring systems to provide data to drivers.
Ramp metering will be added to manage the flow of traffic
entering the freeway. Other elements will include installing
new bridge-supported sign structures and modifying a few
sign structure supports in the median. Refer to the
Map above.
Schedule: Construction began fall 2007.
Project: 64th Street Traffic Interchange
Overview:
The project will construct a new diamond Traffic Interchange
(TI) and associated features on the 64th Street alignment
at Loop 101 (Pima Freeway). 64th Street does not currently
exist in this location. The 64th Street alignment is located
mid-way between the existing TIs at 56th Street and Scottsdale
Road, which are two miles apart.
64th Street is a six lane arterial and will be elevated
approximately 30-feet above the existing ground and over
Loop 101. A new bridge will support the interchange and
crossroad. The interchange will provide freeway access
ramps (entry/exit) for both direction of Loop 101. Also,
included in the project are new auxiliary lanes or lanes
for merging on Loop 101 to connect the 64th Street TI
ramps with the 56th Street and Scottsdale Road TI ramps
and improve the ability for vehicles entering and exiting
the freeway.
Construction is anticipated to be completed fall 2008.
Schedule:
Construction is underway and is anticipated to last through
fall 2008.
ADOT
continually plans for enhancements to the roadway once
it is built and in use for maximum efficiency and safety.
Various studies identify these enhancements and may influence
additional planning, design and construction.
Current Improvements:
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Loop 101 (Pima Freeway), Tatum Boulevard to Princess
Drive design of High Occupancy Vehicle (HOV) lanes
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Project: Loop 101 (Pima Freeway),
Tatum Boulevard to Princess Drive HOV Lanes Design
Overview:
HOV lanes are being designed for the 5.3-mile segment
within the median of Loop 101 between Tatum Boulevard
and Princess Drive. HOV lanes are designed to aide in
relieving traffic congestion during morning and evening
rush hours, encourage carpools and public transportation,
allow for express bus service, shorten travel time, and
reduce overall number of vehicles on the road.
This project has been accelerated by two years through
STAN funding.
Schedule:
Design
fall 2007 through summer 2008
Construction is anticipated to begin fall 2008 through
summer 2009
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Our
Valley Freeway System is part of the 2004 voter-approved
Regional Transportation Plan. We are working hard with
our transit partners to implement the voters’
vision and are committed to quality, safety, open communication
with our neighbors, and minimal inconvenience to the
traveling public. |
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