HomeMy WebLinkAbout1990-12-11 - AGENDA REPORTS - TRAFSIG BIDS (2)0
CONSENT CALENDAR
DATE: December 11, 1990
9
AGENDA REPORT
City Manager Approval
Item to be presented by.
John E. Medina
SUBJECT: TRAFFIC SIG INSTALLATIONS AND IMPROVEMENTS (PROJECT 90-2)
REQUEST TO AD RTISE FOR BIDS
DEPARTMENT: Public Works p\
BACKGROUND
Project 90-2 provides. for the following traffic signal installations and
modifications:
1. Seco Canyon Road at Guadilamar Drive - New Signal
2. Avenue Stanford.at Avenue Scott - New Signal
3. Soledad Canyon Road at Sand Canyon Road - Signal Modification (Left -Turn
Phasing)
During the traffic and design analysis of any proposed signalization, left -turn
phasing is considered. Since left -turn phasing reduces the capacity of an
intersection because through movement must wait for left -turning vehicles, it is
only proposed when there are insufficient gaps in traffic to allow the left
turns. When the number of left turns and through traffic movements are
significantly high would left -tum phasing be installed.
The new signal at Guadilamar is at a tee intersection with a local street and
would likely never need left -turn phasing; therefore, it is not being
installed. The signal at Avenue Stanford/Avenue Scott can be converted to
left -tum phasing by merely changing the mast arm. Since traffic patterns .do
not justify its installation at this time, left turn phasing is not proposed for
this signal.
These projects were identified separately in the FY 90-91 Annual Budget;
however, Staff feels that it will be more cost effective if they are bid as one
project. A total budget in the amount of $325,000 is currently allocated in the
FY 90-91 Annual Budget for this work. It is proposed that
Account No. 25-96060-227 be used to track all costs associated with the project.
Plans and specifications for this project have been completed and are available
for review in the offices of the City Clerk and the Director of Public Works.
Approve the plans and specifications for the project, and authorize the
advertising for bids.
/kn
APPROWED endo�—