SS9402C-CS 980531To:
Mayor and City Council
From:
Kenneth M. Griffin, P.E., Assistant City Manager/City Engineer
Discussion of a traffic control plan to allow the removal of one-half of Bethel
Road with the remaining north half being designated as one-way for the duration
of the project and discussion of entering into an agreement with Dallas County
to remove and replace Bethel Road.
The City is working with Dallas County to rebuild Bethel Road with this project from Grapevine
Creek to Royal Lane. The basics of the agreement with Dallas County is for the County to
come in before construction begins and remove the south half of the asphalt and partial sut~grade
on Bethel Road. After the County has performed that work, the contractor will install the sewer
line. After the sewer line is installed, the County will remix the material that was removed,
replace it and provide a two inch asphalt overlay over the entire roadway. This in essence
would allow the City to have an almost "like new" roadway section at a minimum cost. The
estimated cost for this entire project is approximately $149,223.88. But because of the
classification of this road by the County, the City will only be responsible for 50% of that cost,
i.e. $74,611.94. As can be seen, this is less expensive than Bid Item 35 by Pate Brothers,
which is $90,904.02. This results in an overall savings to the City of $16,292.08. Not only
is there a savings to the City, the work by the County provides us an entire road surfacing over
Bethel Road. The work proposed by Pate Brothers is to basically patch the road in the area that
they disturb during the installation of the sewer line.
The obvious drawback to the contract with the County is that the County would need to go in
before hand and remove the material. This, in essence, removes one-half of the existing
roadway and would only leave one-way traffic on Bethel Road for the duration of the project.
The contractor is estimating that Bethel Road will be completed within 180 calendar days.
Therefore, it is safe to assume that for approximately 6 to 7 months from the beghnning of
construction the road will be reduced to one lane.
In anticipation of this project, the City has performed traffic counts to determine the predominant
flow of traffic in the area. Staff is still evaluating the results and talking to the CISD, Police
and Fire Departments. A recommendation on the direction of the one-way traffic will be
provided at the Council meeting. The south half of the roadway would be the section removed
so the one-way traffic would be on the north half of the roadway. The contractor is responsible
for adequate signs and providing traffic barricading and insuring access to adjacent properties
during the duration of the construction. It is safe to assume that there will be an inconvenience
to the traveling public and potentially to the adjacent businesses during the duration of the
project. However, the overall benefit to the City should out weigh the inconveniences to the
traffic. This will be discussed in detail at the City Council Work Session.
CENT£RLINE: ]~£THE:L ROAD
2' ASPHALT OVERLAY
CDNPACTED
SU9GRADE
-- I - - .~-.;,..%.;:..-...;.~....-......-.....-;.;.~~
...........~.,.,;.'.'-:.:-:..'-;.;~:.-;~':-:,;-.',;.:.;"s~ ~
4' COHPACTED SPOIL
lO' TD 12' SANITARY SI'"VER LINE
6' TO 12'