ST9304-CS 950526DALLAS COUNTY
PUBLIC WORKS
May 26, 1995
Mr. Ken Griffin, P.E.
Assistant City Manager/City Engineer
City of Coppell
P O Box 478
255 Parkway Boulevard
Coppell, TX 75019
Re: Belt Line Road -- Project No. 490-403.1 / 91-829
(Denton Tap Road to MacArthur Boulevard)
Intersection Geometry Responses
Dear Mr. Griffin:
To confirm our discussion of May 23, 1995, the City of Coppell desires the following geometric configurations for
the following free right turn lanes.
Moore Road -
a three centered curve, a five foot offset, and a ninety square foot raised concrete
island
Mockingbird Lane -
a sixty foot radius and a twenty foot lane width
MacArthur Boulevard -
Northeast Corner -
Southwest Corner -
a fifty foot radius, an eighteen foot lane width, and a painted island
a three centered curve, a twenty foot lane width, and an eighty square foot raised
concrete island
The consultant is determining if any of the railroad signal gates will require adjustment at the northeast corner of
MacArthur Boulevard. Additionally, I have spoken with the consultant regarding their assertion that the intersection
details are outside the scope of their contract. The County believes that the design contract is for the complete
design of Belt Line Road and including the intersections. The consultant believes that since the intersections will
not require redesign of the railroad, this question of contract scope is no longer an issue.
Paving plans, cross sections and drainage area maps will be sent for your review in approximately two weeks. To
date this project has experienced only minor delays. We appreciate the City's efforts on this project and look
forward to the timely completion of this project.
Sincerely,
411 Elm Street
Dallas, Texas 75202
653-7151