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Ken Griffin ~ Vista Point II
From: Ken Griffin
To: Marcie Diamond
Date: 5/10/2005 8:24 AM
Subject: Vista Point II
CC: Charlene LaMattina
Marcie
I've included our latest discussions with Lewisville concerning the decel lanes on MacArthur. They are not opposed
to having two decel lanes serving Vista Point II. Unless something happens at Council tonight that prevents us from
requiring the two decel lanes, ie., a persuasive developer, we will make the two decel lanes a requirement of the plan
approval.
ken g
Ken
Our General Development Ordinance allows some staff flexibility with regard to deceleration lanes in cases with multiple
driveways. As long as the northern decel lane meets our requirements, we have the ability to either waive the south one or
modify the design without a formal variance process.
I would agree that a shorter modified design is better than none at all or a continuous one. Also, as this is serving property
outside of our City Limits, I think we have a little more discretion.
David Salmon
Mr. Salmon
This is a followup to our phone conversation on 4/25/05 and your email to Mr. Hauglie concerning decel lanes on
MacArthur that serve Vista Point II in Coppell. Our City Council approved the development with a stipulation that
we work with Lewisville to require decel lanes at both driveways. I expressed a concern at the Council meeting
about one long decel lane that serves two driveways.
Attached to this email is an exhibit that proposes two separate decel lanes. The northern most decel lane meets your
requirements for transition and length. However, to separate the decel lanes, it is not possible to meet you
requirements for the southern decel lane. You had requested 100 feet of transition and 70 feet of storage. We are
only able to provide 100 feet of transition and 44 feet of storage. While this is not optimal, it still provides a safer
turn than no decel lane or one long continuous decel lane.
We have a short decel lane on southbound Denton Tap that serves a shopping center that has 80 feet of transition and
60 feet of storage. It has functioned as anticipated, with no adverse impact. I am proposing a longer transition and
less storage on this one because my only concern with the decel lane on Denton Tap is that the 80 feet of transition
seems a little abrupt at high speeds.
This will be discussed at our Council meeting of 5/10/05, so any feedback prior to the end of the day on 5/10/05
would be appreciated.
Thank you for your consideration of this matter.
..... Original Message
From: DSalmon@cityoflewisville.com [mailto:DSalmon@cityoflewisville.com]
Sent: Tuesday, April 26, 2005 1J.:27 AM
To: Erik M. Haugiie
Subject: Deceleration Lane On Mar. Arthur @i].21
The City of Lewisville will only require a deceleration lane at the nodhern most driveway, however will support construction of
either a continuous deceleration lane to serve both driveways or separate deceleration lanes for each driveway as long as the
northern deceleration lane has 110 feet of transition and 100 feet of storage and the southern deceleration lane has at least
100 feet of transition and a minimum of 70 feet of storage.
Ken Griffin P. E.
Director of Engineering/Public Works
972-304-3686
kgri ffi n~i,coppell,tx,us
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