HomeMy WebLinkAboutAGENDA REPORT 1997 0319 CC REG ITEM 10ECity Council Meeting
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2%cJ4E3!r1C1a Report ACTION:
City of
TO: The Honorable City Council By.
FROM: Kenneth C. Gilbert, Director of Public Works
DATE: March 10, 1997 (Council Meeting 3- 19 -97)
SUBJECT: Consider Approval of Certain Additional Design
Efforts Required to Complete the Project Design
for the Reconstruction of the Spring Road Bridge
1. In September 1994, the City Council selected the firm of
Dwight French and Associates (DFA) to prepare the design
plans and specifications for the replacement of the Spring
Road Bridge across the Arroyo Simi.
2. In July 1995, the City Council approved the conceptual
design for this project,
A. Design Effort
A description of the design services being provided by the
consultant is attached as Exhibit I.
B. Additional Services
Certain additional unforseen design services are required
in order to complete the project design. A summary of
those efforts is as follows:
1. South Bridge Approach: Provide a revised design for
the south approach to the bridge which will be
compatible with the proposed Spring Road street
improvements to be constructed by the Carlesberg
project. This design work will include the preparation
of new cross sections and revised construction cost
estimates.
2. Street Widening: West Side, North of Bridge: The
initial scope of the design did not include the
construction of full -width street improvements on the
west side of Spring Road, just north of the bridge. If
not revised, the final project will not include a
connection between the sidewalk on the west side of the
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Spring Road Bridge Design
March 19, 1997
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new bridge and the sidewalk along the Spring Road
frontage of the Gateway Plaza shopping center. It is
recommended that the project design be revised to
include this construction. This street widening will
require replacement of an open storm drain culvert with
an underground storm drain pipe.
3. Seismic Liquefaction Evaluation: The scope of the
design efforts required the consultant to perform
certain geotechnical analysis. That scope of work did
not require an extensive seismic /liquefaction
evaluation -- work which may not have been necessary.
Upon performing the initial geotechnical analysis it
was determined that additional seismic /liquefaction
evaluation efforts were required. That work was
performed in order to keep the design efforts on
schedule. The amount of additional design fees being
requested is the actual cost of these services with no
additional charges from the City's consultant.
4. Contingency: It is also recommended that the City
Council authorize the City Manager to approve other
additional design services which may be required, for
an aggregate total amount not to exceed $10,000.
C. Reimbursable Costs
The design contract does not
for Reimbursable Expenses.
Agreement be revised to set
$4,000.
D. Fiscal Impact
state a Not To Exceed amount
It is recommended that the
a Not To Exceed amount at
1. Additional Design Engineering Work: A summary of the
design engineering costs, for the additional design
engineering work described above, is as follows:
Describtion
1. South Bridge Approach
2. West Side [N /S} Widening
3. Seismic /Liquefaction Evaivation
4. Contingency
Total
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Amount ($)
3,200
8,710
4,485
10,000
26,395
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Spring Road Bridge Design
March 19, 1997
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2. Revised Consultant Design Costs: A summary of the
total projected design engineering costs for the
subject project is as follows:
Description Amount (S)
Original Amount 84,443
Additional Design Services 26,395
Sub —Total 110,838
Reimbursable Costs (Not to Exceed) _ 4,000
Total 114,838
3. Total Design Costs: A summary of the total anticipated
design costs for the subject project is as follows:
Prior FY 1996/97 &
Element Years ($) Future Yrs (S1 Total
Civil Engineering [DFA;
Expenses to Date 31,450 23,287
Anticipated Future Costs _ 0 60,101
31,450 83,388 114,838
Environmental [EDAW]
Expenses to Date 0 2,948
Anticipated Future Costs 0 4,052
7,000 7,000
Total 31,450 90,388 121,838
4. Total Project Cost Estimate: A summary of the total project costs is as follows:
Description Amount ($)
Design 122,000
Construction 800,000
Construction Contingency (10 %) 80,000
Contract Admin / Insp 78,000
Total 1,080,000
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Spring Road Bridge Design
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5. FY 19%197 t: The Budget for the subject project is summarized as follows:
Prior Future
Element _ Years FY 96/97 Years Total
Design
Existing Budget Amount 50,000
Future Budget Amendment a 40,550
Total 31,450 90,550 0 122,000
Construction 0 0 880,000 880,000
Admin / Inspection _ 78,000 78,000
Total 31,450 90,550 958,000 1,080,000
Note: a) Budget Amendment to be presented at a future meeting.
E. Schedule
1. The Mitigated Negative Declaration should be presented
to the City Council for certification within the next
two months.
2. The Final Design should be completed and presented to
the City Council within the next four months.
3. The project will require the relocation of a number of
utilities from the existing bridge to the new bridge.
The designs for those utility relocations are being
prepared by the owner of each affected utility. It is
anticipated that those designs will be completed in six
to eight months.
4. Based on the above assumptions, the earliest the
project could be constructed is November 1997.
5. As directed by the City Council, construction of the
project will be deferred until after Science Drive has
been constructed and opened to traffic between New Los
Angeles Avenue and Peach Hill Road. That work is not
expected to be completed prior to July 1998.
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Spring Road Bridge Design
March 19, 1997
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Staff recommends that the City Council take the following
actions:
1. Approve the additional design work described in this
report and authorize the City Manager to execute an
Amendment to the Agreement with DFA for Design Engineering
Services for the subject project,
2. Direct staff to prepare an amendment to the FY 1996/97
Budget to fund any required additional design costs for
said project.
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Exhibit 1
DESIGN EFFORT DESCRIBED: The following is a summary of the
design services being performed by the consultant:
Conceptual Design:
- initial hydrology analysis,
- initial geotechnical analysis,
- survey,
- right -of -way needs,
- utility relocation requirements,
- bridge length, width & other design elements,
- interface with future trail system,
- Preliminary plan / profile,
- bridge alignment,
- road closure analysis,
- preliminary construction cost estimate.
Preliminary Design:
- final hydrology analysis,
- final geotechnical and seismic analysis,
- bridge widening costs (grant data),
- final design for bridge alignment, length, width,
approaches & other project elements,
- final right -of -way requirements,
- final utility relocation requirements,
- draft construction staging & traffic control plan,
- estimate of probable construction cost.
Draft Final Design:
- final r -o -w needs (legal descriptions, etc.),
- final draft design plans and specifications,
- final construction staging & traffic control plan,
- final roadway approach design plans,
- final striping plans,
- final bid items and estimated quantities.
Construction Documents:
- final plans and specifications
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