ST9301A-CS 990413 MEMORANDUM
FROM
DEPARTMENT OF ENGINEERING
To: Mayor and City Council / Work Session
Kenneth M. Grfff'm, P.E., Dir. of Engineering/Public Works ~'~
From:
Date: April 13, 1999
RE: Sandy Lake Road bridge construction
The contractor for the Sandy Lake Road bridge construction, along with representatives
from Dallas County and the City of Coppell, have met concerning the construction of the
bridge over the Elm Fork of the Trinity River. The contractor is at a point where he needs
to have shipped in 12 120-foot long bridge beams. By virtue of process of elimination of
various routes through Carrolton, utilizing S.H. 635, I.H. 35E, S.H 121 Bypass, etc., the
contractor and the bridge beam manufacture have eliminated all routes except the
intersection of Denton Tap and Sandy Lake Road.
It is the contractor's desire to truck in the bridge beams and stage them along Denton Tap
Road and when the contractor calls for the first beam to have police stop the traffic at
Sandy Lake and Denton Tap to allow the driver to maneuver through the intersection
proceeding east along Sandy Lake Road to the bridge. The contractor has indicated that
each time a beam goes along Sandy Lake Road to the bridge it will be approximately 5 plus
minutes with the traffic stopped. There are 12 beamn to bring through and the operation
itself would take approximately 2 - 4 hours of intermittently stopping the traffic at the
Denton Tap / Sandy Lake Road intersection.
The Engineering Department is still waiting on traffic control plans, verification that the
other routes have been eliminated and verification that the route through the Denton Tap /
Sandy Lake Road intersection will work. We have spoken with Dallas County about having
the contractor rent changeable message boards prior to the trucking in of the beams to alert
the motorists to expect 5 - 10 minute delays intermittently throughout the day. Contractor
has been told that no traffic will be stopped on Denton Tap or Sandy Lake except between
9:00 a.m. and 2:00 p.m. This gives the contractor a five-hour window to bring the beams
through. Until we officiaily have all the pieces to the pnzzle, thi~ department has not
committed to anything at thi~ time concerning the trucking in of the beams through Coppell.
However, ff this becomes the only viable route and we realize that they will be brought
through Coppell, then our goal at that point is to minimize the impact on the citizens and
City of Coppell.
Staff will be available to answer any questions at the Council meeting.
"CITY OF COPPELL ENGINEERING - EXCELLENCE BY DESIGN"