HomeMy WebLinkAboutCC 4 TRAFFIC ANALYSIS 04-03-89/"! ", ii I.~!. ~:,~ F"~rl ~:: CONSENT CALENDAR
DATE: ~RCH 27, 1989 ...... om
TO:
WILLIAM HUSTON, CITY MANAGER
FROM:
PUBLIC WORKS DEPARTMENT/ENGINEERING DIVISION
SUBJECT: TRAFFIC ANALYSIS FOR THE WEST LEG TRANSITION AREA OF THE
EASTERN TRANSPORTATION CORRIDOR
RECOMMENDATION: -.
·
That the Tustin City Council at their meeting of April 3, 1989 authorize
City's participation in the preparation of a subarea traffic model for
the Traffic Analysis of the West Leg Transition Area of the Eastern
Transportation Corridor and authorize a supplemental 1988-89 Budget
appropriation in the amount of $5 000.00 for Tustin's share of the total
cost. '
BACKGROUND:
·
The Transportation Corridor Agency (TCA) as a part of the preparation of
· .he environmental documentation for the Eastern Transportation Corridor
~ETC) is performing a traffic analysis of the West Leg Transition area
which is located between the Santa Ana Freeway and Edinger Ave. The
City of Irvine and Tustin Staffs have reviewed the scope of services of
the TCA Traffic Analysis and feel that additional study is required to
address local Agency and Community concerns. The TCA analysis is geared
mainly to the mainline corridor analysis.
The two local agency staffs have requested TCA to include a special
subarea model for the appropriate area of influence for the transition
area. TCA has responded favorably to this request ~nd has suggested the
following agency cost share due to this additional work not being
included within the original scope of services and project Budget:
TCA 50%
City of Irvine 30%
City of Tustin 20%
DISCUSSION:
This special subarea model study will provide additional traffic
analysis information as it relates ~o the local arterial streets within
transitional area of influence. The current Irvine Business Complex
Traffic Analysis Model (IBCTAM) will be extended northerly from the
Santa Ana Freeway to where Tustin Ranch Road intersects with Jamboree
Road. This expansion will simulate driver decisions that occur
-~ortherly of the Santa Ana Freeway. Each of the alternative alignments
~ive total) for the corridor transition and arterial alignments will be
~valuated.
TRAFFIC ANALYSIS FOR THE WEST LEG TRANSITION AREA OF
THE EASTERN TRANSPORTATION CORRIDOR
MARCH 27, 1989
PAGE 2
The firm of Austin-Foust Associates, Inc. has been requested to submit a
proposal for this study. Their proposal consists of four general tasks
as follows:
1. Define Study Area and Traffic Zone System - This includes the
expansion of the IBC study area to incorporate the ETC portion
northerly of the Santa Ana Freeway. The Traffic Zones will be
expanded into the new area with appropriate land use data.
2. Model Preparation - This task will prepare a subarea model from
the parent model ITAP which is the City of Irvine's Traffic Model.
3. Traffic Analysis - Each of the five alternative designs for the
transition area will be analyzed. This analysis will produce peak
hour volumes on the various links of the network, weaving
movements, intersection volumes and I.C.U.'s.
4. Traffic Report - This task will include the summarization of the
subarea traffic model and the results of the analysis in a
traffic report.
This study will take ten (10) weeks to complete at a proposed cost of
$24,600.00. Tustin's share of this fee would be $4,920.00.
Staff recommends that the City participate in the preparation of this
subarea traffic model and request the Tustin City Council to authorize
a supplemental budget appropriation in the amount of $5,000.00 to cover
the cost of said work. ~
Bob Ledendecker
Director of Public Works/City Engineer
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