HomeMy WebLinkAbout09 - Seismic Retrofit of Newport Island and Lido Isle Bridges Contract No. 2804 - Completion and AcceptanceMarch 8, 1999
CITY COUNCIL AGENDA
ITEM NO. 9
TO: Mayor And Members Of The City Council
FROM: Public Works Department
SUBJECT: SEISMIC RETROFIT OF NEWPORT ISLAND AND LIDO ISLE BRIDGES
CONTRACT NO. 2804 - COMPLETION AND ACCEPTANCE
RECOMMENDATIONS:
1. Accept the work.
2. Authorize the City Clerk to file a Notice of Completion.
3. Authorize the City Clerk to release the bonds 35 days after the Notice of
Completion has been recorded in accordance with applicable portions of the Civil
Code.
DISCUSSION:
On June 8, 1998, the City Council authorized award of the Seismic Retrofit of Lido Isle
Bridge and Newport Island Bridge - Contract No. 2804, to Peterson -Chase of Irvine,
California. The contract provided for strengthening the Lido Isle and Newport Island
bridges to increase their resistance to collapse due to earthquake forces. The contract
has now been completed to the satisfaction of the Public Works Department. A
summary of the contract cost are as follows:
Original bid amount:
$494,278.50
Actual amount of bid items constructed:
475,038.50
Total amount of change orders:
61,597.18
Deductions:
(455.00)
Final contract amount:
$536,180.68
The actual amount of bid items constructed was less than the original bid amount
because no work was performed under Bid Item No. 11. Bid Item No. 11 provided for
making shallow concrete repairs at spalled areas on the Newport Island bridge.
Inasmuch as the spalled areas were much deeper than anticipated, certain reinforcing
steel had to be replaced; accordingly, Bid Item No. 11 could not be used, and the spall
repairs were performed as an Extra Work change order.
Five change orders were issued on this contract. The first was for $4448.50 to furnish
and install structural steel to satisfy as -built conditions on the Lido Isle bridge. The
second was for $30,753 to construct a supplemental pile needed because of buried
manmade objects at the Lido Isle bridge. The third change order was for $2061 to
reposition two piles to clear an existing Lido Isle bridge footing. The fourth was for
Subject: Seismic Retrofit Of Newport And Lido Isle Bridges, Contract No. 2804, Completion And Acceptance
March 8, 1999
Page 2
$647.47 to sawcut the pavement removals at the Newport Island bridge, and the fifth
was for $23,687.21 to perform the spall repairs mentioned above.
Loads imposed upon a City street light pole by the Contractor's temporary traffic signal
cable and a Lido Isle Community Association banner led to the failure of the pole. The
Contractor has been assessed a $455.00 deduction in contract amount to reimburse
the City for half of the labor and materials costs to replace the pole.
The final construction cost, including change orders and the street light pole deduction,
is 8'/2% above the original bid amount. Design and construction management was
provided by Dokken Engineering. Design, construction and construction management
is 100% funded by the Federal Highway Administration and the State of California.
Funds for the project were budgeted under Account No. 7251- C5100067, Bridge
Retrofit Program.
The scheduled completion date was November 13, 1998. Due to the extra work and
differing site conditions, the Contractor was granted 31 additional working days. All
work was completed on January 14, 1999.
Respectfully sub itt'd,
'&
PUBLIC WORKS DEPARTMENT
Don Webb, Director
• • 6/Dalton,
Design
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