A d d e n d u m - Iowa DOT

A d d e n d u m Iowa Department of Transportation Date of Letting: April 16, 2013 Office of Contracts Date of Addendum: April 9, 2013

B.O. Proposal ID Proposal Work Type County Project Number Addendum

004 15-0922-036 BRIDGE AND APPROACHES - PPCB

CASS BRF-092-2(36)--38-15

16APR004.A01

Notice: Only the bid proposal holders receive this addendum and responsibility for notifying any potential

subcontractors or suppliers remains with the proposal holder.

Make the following change to the PROPOSAL SCHEDULE OF PRICES: Add Proposal Line No. 0181 2599-9999005 BEARING PAD; 24.000 EACH If the above change is not made, it will be made as shown here. Make the following change to plan sheet number 2: For Item Code 2407-0563120BEAMS, PRETENSIONED PRESTRESSED CONCRETE, BTC120, delete the following from the Estimate Reference Information: INCLUDES 24 BEARING PADS. SEE DESIGN SHEET 14 FOR ADDITIONAL DETAILS. IF ADDITIONAL BEARING PADS ARE NEEDED FOR THE CONTRACTORS MEANS AND METHODS OF PREFABRICATED BRIDGE SUPERSTRUCTURE MOVE THEY SHALL BE INCIDENTAL AND NO ADDITIONAL PAYMENT WILL BE MADE. For Item Code 2599-9999005 BEARING PAD, add the following Estimate Reference Information: APPLY SECTION 4195 OF THE STANDARD SPECIFICATIONS. SEE DESIGN SHEET 14 FOR ADDITIONAL DETAILS. IF ADDITIONAL BEARING PADS ARE NEEDED FOR THE CONTRACTORS MEANS AND METHODS OF PREFABRICATED BRIDGE SUPERSTRUCTURE MOVE THEY SHALL BE INCIDENTAL AND NO ADDITIONAL PAYMENT WILL BE MADE. THE METHOD OF MEASUREMENT AND BASIS OF PAYMENT WILL BE FOR EACH BEARING PAD FURNISHED AND PLACED. Make the following change to plan sheet number 9: Replace the following note: THE PRECAST ABUTMENT FOOTING SUPPORT SHALL NOT BE REMOVED UNTIL 4000 PSI COMPRESSIVE STRENGTH HAS BEEN ACHEIVED. With: THE PRECAST ABUTMENT FOOTING SUPPORT SHALL NOT BE REMOVED AND THE PREFABRICATED BRIDGE SUPERSTRUCTURE MOVED UNTIL THE CONCRETE IN THE PILE POCKET VOIDS HAS ATTAINED 4000 PSI COMPRESSIVE STRENGTH.

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Attached are the following files from the Pre-Bid meeting held April 3, 2013: -Meeting Minutes with a list of attendees -PowerPoint Presentation The following is a link to the visualization file that was shown at the Pre-Bid meeting held April 3, 2013: http://www.youtube.com/iowadot

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Prebid Meeting Cass 113

April 3, 2013

Attendees: Jim Nelson, Gary Novey, George Feazell, Ahmad Abu‐Hawash, Kurt Estrem, Scott Hanson,

Kyle Frame, Kimball Olson, contractors

Scott Hanson and George Feazell:

Currently – 9 bid holders

No DBE goal

October 21st, late start

Iowa DOT in charge of placing detour

2 utility lines on north side will be relocated before start date

Jim Nelson:

Temporary works and prefab bridge move will need PE plan signed and submitted

SP written for open ended method for moving bridge

Age of bridge move based on curing (not 28 days)

Test move required

Stainless steel sole plate item is subject to deletion if method of superstructure move is changed

Important to remember sequence of operations on sheet 3 can changed sequentially

No VE allowed because of nature of demonstration

Sheet 9 – may need addendum on note for temporary supporting abutment footing for curing

pile void concrete to 4000 PSI

Pile void curing likely on critical path

Orientation of piles is rotated 90 degrees from traditional abutments

2 sliding pads per beam bearing; 6x2x2=24 brgs

Contractor Questions:

Anything off roadway – No working day charge if no lane closure

Consider taking bearings out of beam price since method of move is not definite; this would be

an addendum

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