HomeMy WebLinkAboutACHD CommentsCHD
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September 10, 2007
To: Bryan Foote
Horrocks Engineers
5700 E. Franklin Road, STE 160
Nampa, ID 83687
SEP 1 1 2007
Ciry of Meridian
City Clerk Of'f~ce
Subject: N. Montvue Dr./E. Louise Dr. Intersection in Gardner-Ahlquist Gateway Subdivision
In response to your request for comment, regarding the submitted intersection analysis for
the N. Montvue Drive/E. Louise Drive intersection in Gardner-Ahlquist Gateway
Subdivision. The District is supportive of the conclusion in the analysis which identifies a
T-intersection with stop control as the best intersection treatment to prevent cut through
traffic. The District would not be supportive of a roundabout in this location due to a
potential increase in cut-through traffic between Eagle and Franklin Roads.
If you have any questions, please feel free to contact me at (208) 387-6178.
Sincerely,
Mindy Wallace
Planner III
Right-of-Way and Development Services
CC: Project file
City of Meridian
John S. Franden, President
Rebecca W. Arnold, Vice President
Sherry R. Huber, Commissioner
Dave Bivens, Commissioner
Carol A. McKee, Commissioner
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Ada County Highway District • 3775 Adams Street • Garden City, ID • 83714 • PH 208-387-6100 • FX 345-7650 • www.achd.ada.id.us
EXISTING STREET SECTION FOR
EAGLE ROAD
This is the current layout of Eagle
Road coming upon the Eagle /
Franklin intersection.
Eagle Road generally consists of 2
travel lanes and 1 right-turn lane
between St. Luke's Drive and
Franklin Road.
ITD has established its' ultimate
ROW for Eagle Road to be 70 feet
from center. This means that the
current total ROW width for Eagle
Roads is 140 feet.
The lane width for a typical street
varies between 11 and 14 feet.
Center turn lanes are usually wider
(14 feet) than travel lanes and
right-turn lanes (12 feet).
Let's say that each travel and turn
lane on Eagle Road is, in fact, 14
feet wide (this is an
overestimate!). As such, then the
half-street section for Eagle Road
(including 1 left turn lang. and 1
right turn lane) would be
approximately 56 feet. This leaves
exactly 14 feet of surplus ROW
unaccounted for.
PLEASE SEE NEXT PAGE
POSSIBLE R-O-W STREET SECTION FOR
EAGLE ROAD
We have added the Gardner-
~ ~ ~ ~ Ahlquist property boundary in
relation to the ITD Ultimate ROW
~ ~ ~ line. (Note that the Gardner-
Ahlquist South property line and
~ ~ ~ ~ ~ ~ the Ultimate ROW line are one
and the same!)
I
I 4' 414 14 If the existing turn lane became a
thru lane and a new right-turn lane
' were constructed also at a width of
i / 7
D 14 feet, then the half-street section
o for Eagle Road would be at 70 feet
' ~ PertY Z exactly!
~ • ~ ~'
I ~' -d But, as previously mentioned, the
I I Q ~ lane width for atypical street
. ~
° varies between 11 and 14 feet.
I I ~ Center turn lanes are usually wider
„
~ ~ (14 feet) than travel lanes and
I ~ I .. C~ right-turn lanes (12 feet).
~ I ~
~ a So, in reality, as the real half-street
I ~ I ~ section would be 62 feet (14 + 12
.. +12+12+12)andnot 70 feet
I I
~ (14 + 14 + 14 + 14 + 14), there is
I I A 8 feet of unused ITD right-of--way
still inside the ultimate ROW line!
I ~ And per, City Code, we would be
I I '~'~/' required to landscape that, as well.
I I >, We are proposing to install the
I ~ City's required 35-foot landscape
buffer BEYOND the ultimate
I ' ° ROW in addition to the 8+
I ~ additional feet inside of the ROW.
I ~ I ° As evidenced by this Exhibit,
/ constructing the buffer for
Phase I on ITD property WILL
NOT interfere with any future
expansion plans for Eagle Road.
I~It;t;t~