HomeMy WebLinkAboutItem 15 - Traffic Engineering StudySUBJECT
City Council consider:
BRUNO RUMBELOW, CITY MANAGER
NOVEMBER 18, 2014
TRAFFIC ENGINEERING STUDY— NORTHWEST HIGHWAYAT
PARK BLVD AND AT SH 114
• approving a Traffic Engineering Contract with Lee Engineering in an amount of
$14,400.00, for Traffic Engineering Services at the intersections of Northwest
Highway at Park Boulevard and Northwest Highway at SH 114,
• adopting an ordinance appropriating $33,608.62 from 99 GO Bonds;
authorize staff to execute said contract and take any necessary action.
FUNDING SOURCE:
Funds are available and programmed in 99 GO bonds, account #178-78117-010 for
engineering services relative to the DFW Connector Project.
Staff has identified the intersections of Northwest Highway with Park Blvd and SH 114
Service Roads needing operational updates now that the DFW Connector has been
completed. These three signals are closely spaced and need to operate as one
interchange.
Staff has discussed the status of the three signals with Lee Engineering and has
developed a plan to assess the operation and update the physical components as well as
developing timing plans for the three signals to improve their efficiency.
Dynamic Lane Use Evaluation
One consideration to be reviewed with this contract is the feasibility of the installation of a
dynamic lane use and signal display operation for westbound Northwest Highway to
eastbound SH 114 Frontage Road. This will allow for dual left turns to eastbound during
part of the westbound green signal phase before the eastbound Northwest Highway green
phase is engaged.
R:\AGENDA\2014\11-18-14\Traffic Study - NW Hwy & SH 114.doc November 18, 2014
This configuration currently is utilized at the eastbound Hall Johnson Road and northbound
SH 121 Frontage Road.
Lee Engineering will provide a report documenting the recommended Dynamic Lane Use
Improvements with sufficient detail for submittal to TxDOT for their review.
Signal Timing Plans
The timing plans will address needed timings for AM, PM, midday and weekends utilizing
traffic counts and Synchro 8, a signal timing optimization program. The plans will include
cycle lengths, signal phasing, splits, offsets, and times of day for each plan.
City Staff will enter the new timing plans into the controllers.
Funding
City Staff had earmarked funds at the outset of the DFW Connector Project for consultant
support. The majority of these funds were approved by City Council and have been spent.
The balance of the total funds earmarked by City Staff but not appropriated by City Council
to date is $33,608.62. This balance remains available for consultant support to address
additional issues pending Council appropriation of the funds.
Staff recommends approval.
RAAGENDA\2014\11-18-14\Traffic Study - NW Hwy & SH 114.doc November 18, 2014
ORDINANCE NO. A 66 c S C ce D Y
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS, REVISING THE ADOPTED CAPITAL
IMPROVEMENTS BUDGET FOR THE FISCAL YEAR
ENDING IN 2015, PROVIDING FOR THE TRANSFER OF
THE FUNDS; DECLARING AN EMERGENCY AND
PROVIDING AN EFFECTIVE DATE
WHEREAS, the City Council of the City of Grapevine desires to improve traffic
efficiency throughout the DFW Connector Corridor; and
WHEREAS, funding for improvements is not currently included in the FY 2014 -2015
Capital Improvements Plan Budget; and
WHEREAS, implementation of traffic modifications will provide improved traffic
efficiency in the corridor.
NOW, •'E, BE IT ORDAINED BY THE CITY COUNCIL
GRAPEVINE, TEXAS:
Section 1. That all matters stated in the preamble of this ordinance are true and
correct and are hereby incorporated into the body of this ordinance as if copied in their
entirety.
Section 2. That the City Council hereby authorizes an amount of $33,608.62 be
appropriated from the 1999 General Obligation Bonds earmarked for Consultant Support in
the DFW Connector Corridor to the FY 2014-2015 Capital Improvements Plan budget for
engineering services relative to the DFW Connector Project.
Section 3. That a copy of the revised FY 2014-2015 Capital Improvements Plan
budget document shall be kept on file in the office of the City Secretary and on the City of
Grapevine website.
Section 4. That the terms and provisions of this ordinance shall be deemed to be
severable, and that if the validity of any section, subsection, word, sentence or phrase shall
be held to be invalid, it shall not affect the remaining part of this ordinance.
Section 5. That the fact that the present ordinances and regulations of the City of
Grapevine, Texas are inadequate to properly safeguard the health, safety, morals, peace
and general welfare of the inhabitants of the City of Grapevine, Texas, creates an
emergency for the immediate preservation of the public business, property, health, safety,
and general welfare which requires that this ordinance shall take effect immediately from
and after its passage and it is accordingly so ordained.
PASSED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS on this the 18th day of November, 2014.
ORD. NO. 2
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