ITD focusing on 4-lane
design for Hwy. 75
Discussion of options
scheduled Jan. 23
By GREGORY
FOLEY
Express Staff Writer
Idaho
Transportation Department officials have shortened their list of design
alternatives for expanding Highway 75 through the Wood River Valley, and have
decided to focus on two designs that propose four and five lanes through most
areas, an ITD consultant said this week.
Diana Atkins, an
ITD consultant from Utah-based Parsons Brinckerhoff, said Monday that project
managers have decided to discontinue research on the remaining five highway
expansion alternatives that have been under consideration.
A three-lane
design and a considerably more ambitious plan that proposed up to seven lanes to
meet a state traffic-flow standard have both been essentially removed from
further consideration, Atkins said.
The so-called
"Enhanced 3-lane" option proposed two lanes with a center turn lane
through much of the Wood River Valley, with some sections that would have up to
five lanes. The plan also called for improvements to the existing public transit
system.
The so-called
"Level of Service C" alternative that was also eliminated had proposed
a significantly wider design put forth for the project to meet the state’s
minimum standard for traffic flow through the region. The design called for
three lanes in each direction plus a center-turn lane from Buttercup Road north
of Hailey to Serenade Lane just south of Ketchum.
"The impacts
of those two alternatives are high," Atkins said, noting that a significant
amount of land would have had to have been purchased by the public to either
ensure access to the highway or to provide a wide enough right of way to
accommodate the expanded roadway.
The decision to
essentially eliminate design alternatives was made after a Dec. 10 workshop by
public officials and other interested parties to discuss the pros and cons of
various designs, Atkins noted.
She said she and
ITD officials will present an explanation of why the alternatives were
eliminated at a public open-house meeting scheduled for Thursday, Jan. 23, from
4 to 8 p.m. at the Wood River Inn in Hailey.
ITD officials at
the meeting will present revised mapped drawings for the two remaining Highway
75 expansion alternatives, both of which propose a combination of four- and
five-lane designs for different points in the valley.
In addition, the
state—as it is mandated to do by the Federal Highway Administration—is still
considering a so-called "No Build" alternative that proposes no new
projects to expand Highway 75.
With the "No
Build" alternative, the two remaining alternatives to expand the highway
will be the focus of a study in 2003 to determine the various impacts the
different projects would have on the valley and its residents, commuters and
communities.
The results of
that study will ultimately be included in a formal Environmental Impact
Statement that ITD officials expect to release by next fall.
The FHWA will
eventually make the final determination as to which alternative is advanced for
final consideration for funding and construction.
The two remaining
expansion designs are almost identical, differing only in how they make
provisions for commuters who carpool.
Both alternatives
call for either three or four traffic lanes from Timmerman Junction to Gannett
Road south of Bellevue, and call for four traffic lanes and intermittent center
turn lanes from Gannett Road to Fox Acres Road in Hailey.
Both alternatives
call for four continuous traffic lanes and a center turn lane from McKercher
Boulevard in northern Hailey to Elkhorn Road south of Ketchum. However, one
design would designate one lane in each direction as a high-occupancy-vehicle
lane that could only be used by cars with multiple passengers during peak
traffic hours.
Both designs also
propose three options for the stretch of road from Elkhorn Road to the Trail
Creek Bridge in Ketchum, including two-, three- and four-lane alternatives.
All sections with
four traffic lanes would provide two lanes for northbound travel and two lanes
for southbound travel.
Both options
propose enhancements for pedestrians in cities, increased opportunities for
carpooling, and an increase in public bus service.
Atkins said
Monday that ITD is working to refine the two remaining expansion designs, and in
doing so will attempt to incorporate ideas provided by the public over the last
year at various meetings.
"We will
address as many of those ideas as possible," she said.