ST9401-CS 950728Coppell, Texas 75019
P.O. Box 478
Coppell, Texas 75019
214-462-0022
July 28, 1995
Wier and Associates, Inc.
4300 Beltway Place, Suite 130
Arlington, Texas 76018-1097
RE: Denton Tap Road ST 94-01
Dear Sir:
The City of Coppell has received and reviewed the plans submitted for the referenced project.
I apologize in the delay in getting the plans returned with our review comments, but I have been
trying to secure funding for this project so that it can be constructed in 1996 along with the
Lewisville section and the S.H. 121 Bypass. I have also been working out the agreement with
Vista Properties on the drainage solution. Up until approximately two weeks ago it was
anticipated that this project would be funded and construction could start in 1996. However,
the Council Finance Committee has recommended that this project not be funded for construction
at this time. Therefore, it is my recommendation that we proceed with the completion of the
final construction plans and start working on any utility relocations that may be needed so that
when the project is funded we can start immediately. One item I would like to explore with you
is the possibility of breaking out the water lint' in Denton Tap Road as a separate project and
constructing it today. I currently have funding to do that project, but I am not sure if it would
greatly increase the cost by doing that project early. I know the proposed water line would be
constructed within future right-of-way. However, because it would be a benefit to the adjacent
properties, it is quite likely that an easement could be acquired at this time and overlaid at a
future date with right-of-way when the property is platted adjacent to Denton Tap Road. We
need to discuss the concept for breaking out the water line.
The following represents the comments associated with the construction plans:
In response to your question, the City also prefers Alignment A.
At approximately Sta. 203+00 you should begin widening the pavement with three
additional feet on the outside lanes. It appears that Council is interested in having the on-
street hike and bike lane constructed. I realize that will impact the construction of the
bridge and is not what we had anticipated.
,
,
10.
11.
12.
13.
14.
15.
The final plans should show that all drive way entrances, street intersections, and median
noses will be required to have brick pavers.
Valves should be provided on either side of any creek crossings for the 16" water line and
also air release valves should be provided where necessary.
The future street shown at approximately Sta. 215 +00 will have a grade differential from
the proposed roadway. Will that differential prevent a safe street connection? Also, with
the proposed optional retaining wall will there be a visibility problem in the future?
On Sheet 12, will the proposed bridge rails create a visibility problem for the driveway into
Andrew Brown Park?
A driveway turnout should be provided on the east side of Denton Tap Road at the median
opening at approximately Sta. 202+66.
Water line stub outs should be provided for property that could be developed on the east
side of Denton Tap Road.
Ten foot inlets and 21" laterals should be used at all low points.
The drainage should be revised based upon the agreements being worked out between
Coppell, Vista Properties and TxDOT to route water east at Spur 533.
The future median opening shown at approximately Sta. 215 +00 shows a retaining wall on
the west side of Denton Tap Road. Will this interfere with the future street in that location?
The median opening at approximately Sta. 220+00 should be eliminated.
The Master Plan shows a future 12" water line proceeding west from Denton Tap Road
along the future alignment of S.H. 121 Bypass. It is anticipated that the property north of
that bypass in the City of Coppell would take water from that system. Therefore, the water
line that transitions west to east at Sta. 223 +00 should continue northward until at least the
S.H. 121 right-of-way.
The inlet at Sta. 237+ 16 should be relocated further south so that it will not interfere with
a future curb return radius if a street is constructed at the median opening.
A banded section of brick pavers should be provided around the intersection of Highland
Drive with Denton Tap Road.
In regards to the bridge pathway shown on Page 27, please note the comment about whether
or not there will be additional bridge cost if we made both sides of the driving lanes 37 feet
and acquired the additional 3 feet for each side up from the proposed 16 foot bike lane on
the east side oI the Denton Tap Road bridge. Continuing with the bridge pathway
comments on Page 28, please note that based upon direction from Council, we should
pursue constructing the bridge crossing for the bike path at this time as pan of this design.
Again, note the comment about whether or not we can narrow that bike path to 10 feet on
the east side and use the additional 6 feet to put 3 additional feet on both the south and
north bound lanes to come up with 37 feet of roadway.
There are various other comments located throughout the plans that are of a minor nature that
should also be noted and corrected as necessary. I would recommend that after you have had
time to review these, at your convenience we schedule a time to meet and go over the
comments. Also, included with the plans are copies of the report that includes various
comments.
I would like to say that I have never received a set of preliminary plans in color. Once I
became accustom to the color it made for an easier review and easier recognition of the various
components of the design. Overall, I was quite pleased with the quality and the effort put forth
in the preliminary construction plans. I ~ook forward to a successful completion of this project.
If you should have any comments prior to our scheduled meeting please feel free to call me.
Sincerely,
Kenneth M. Griff'm, P.E.
Assistant City Manager/City Engineer
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April 21, 1995
@
STC;4-0l
WIER & ASSOCIATES, INC.
ENGINEERING
SURVEYING
LAND PLANNING
Mr. Kenneth Griffin, P.E.
City Engineer
Engineering Department
City of Coppell
255 Parkway Boulevard
Post Office Box 478
Coppell, TX 75019
214/462-0022
RE: W&A # - 94093, DENTON TAP ROAD;
Coppell, Texas
Dear Ken:
Please find attached two copies of the Conceptual Plans and Report for your
review. We did not forward copies of these plans to Public Utilities since the horizontal
alignment has not been selected. We will forward copies of the selected alignment to
the public utilities after you review the plans.
We have determined that the fill embankment and import will be much higher
than we estimated in our first cost opinion. We would like to discuss possible options
to reduce the fill embankment after some additional hydraulic studies are completed.
After you and your staff have reviewed the Conceptual Plans, please call me at
metro 817/467-7700 so we may meet and go over the results of your review. We have
enjoyed working with you and your staff on this project.
Very truly yours,
Yo/~
UL YS LANE III, P.E., R.P.L.S.
Executive Vice President
WIER & ASSOCIATES, INC.
UTL:ckw
JOHN P. WIER, P E , R P L.S . ULYS LANE Ill, F1.E, R P.L.S
ASSOCIATES: J REA STEVENSON, P,E . RONALD W COOMBS
4300 BELTWAY PLACE. SUITE 130 ARLINGTON. TEXAS 76018-1097 METRO IB171 467-7700 FAX (817) 465.7482
390B SOUTH F"REEWAY F"ORT WORTH. TEXAS 76110-63ge (8171926-0212 FAX (8171 926-9347