HomeMy WebLinkAboutAGENDA REPORT 1990 1205 CC REG ITEM 11F',;Z 0(
MOORPARK ITEM i I. F
BERNARDO M. PEREZ
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SCOTT MONTGOMERY
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ELOISE BROWN
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Councilmember
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CLINT HARPER, Ph.D.
Councilmember
PAUL W. LAWRASON, Jr.
BY
Councilmember
LILLIAN KELLERMAN
City Clerk
M E M O R A N D U M
TO: The Honorable City Council
STEVEN KUENY
City Manager
CHERYLJ.KANE
City Attorney
PATRICK RICHARDS, A.I.C.P.
Director of
Community Development
R. DENNIS DELZEIT
City Engineer
JOHN V. GILLESPIE
Chief of Police
RICHARD T. HARE
City Treasurer
FROM: Kenneth C. Gilbert, Director of Public Works
DATE: November 26, 1990 (Council Meeting 12 -5 -90)
SUBJECT: Change to Bridge Design for the Freeway Connector Project
OVERVIEW
This presents a proposal to amend the design of the bridge
structures for the freeway connector project (Routes 23 & 118).
DISCUSSION
A. Background
As you are aware, Caltrans is in the process of reviewing bids
for the construction of the Highway 118 - 23 freeway connector.
The bidding documents for that project encourage bidders to
propose cost - saving alternatives to the designs set forth in the
plans and specifications. In the event a proposed change is
approved by Caltrans, the State would share any cost savings
resulting from the change, with the Contractor.
B. Proposed Change
Caltrans is in receipt of such a request to consider a change to
the design for the bridges deck structures. As reflected on the
attached excerpt from the plans, it is proposed that the walls
of the girders be made thicker in order to eliminate the
necessity for certain internal structural elements. The affect
of this change to the external appearance of the structure is
minor. The bottom of the bridge deck would be made four feet
wider, and the overhangs at the top or the bridge deck would be
reduced from eight feet wide to six feet wide.
799 Moorpark Avenue Moorpark, California 93021 (805) 529 -6864
Freeway Bridge Design Change
December 5, 1990
Page 2
C. Cost Impact
It is estimated that the cost savings derived from this change
could be a much as $500,000.00.
D. Input Requested
Prior to taking any action
Caltrans has asked for input
time constraints imposed by
regarding this proposal must
E. Staff Review
on this proposed design change,
from the City. However, due the
the bidding process, a decision
be made in the very near future.
The City Engineer and Public Works Director have discussed and
reviewed the proposed design changes. It is the opinion of
staff that the affect of the proposed changes to the visual
appearance of the bridge deck structures, is relatively minor;
and that the final design and appearance of the project, as
amended, will be consistent with the original design concept.
F. Seismic Analysis
Please note that the above opinion relates ONLY to the visual
appearance of the bridge. According to Caltrans staff, the
proposed design changes will not adversely affect the ability of
the structures to withstand seismic loads.
Staff recommends that the City Council direct staff to advise
Caltrans that the City of Moorpark is not opposed to the changes to
the bridge deck design described herein.