A d d e n d u m Iowa Department of Transportation Date of Letting: August 21, 2012 Office of Contracts Date of Addendum: July 17, 2012

B.O. Proposal ID Proposal Work Type County Project Number Addendum 101 34-2189-132 Bridge Approach

Repair Floyd NHSN-218-9(132)--2R-34 21aug101.a01

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

potential subcontractors or suppliers remains with the proposal holder.

Attached is a SCHEDULE OF PRICES for the following items:

Line No. 0111 2122-5190501 PAVED SHOULDER, PORTLAND CEMENT CONCRETE (PAVED SHOULDER PANEL FOR BRIDGE END DRAIN)

Line No. 0112 2301-0685550 BRIDGE APPROACH PAVEMENT, AS PER PLAN

Bid these items as instructed and submit the bid for these items with the Bid Proposal. Make the following changes to the PROPOSAL SCHEDULE OF PRICES: Delete Line No. 0010 2301-0690200 BRIDGE APPROACH, RK-20

Change Line No. 0020 2510-6745850 REMOVAL OF PAVEMENT from 92.000 SY to 185.500 SY

If the above changes are not made on the proposal form, they will be made as shown here. Make the following changes to the Plan Sheet C.1:

DELETE Tab. 100-1A : 07-15-97 DELETE Tab. 100-4A : 10-29-02

Make the following change to the Plan Sheet C.2:

DELETE Tab. 110-1 : 08-01-08

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Make the following change to the Plan Sheet C.3:

DELETE Tab. 112-6 : 10-21-08 ADD the attached TABS to the Plan Sheet C.1:

Tab. 100-1A : 07-15-97 Tab. 100-4A : 10-29-02

ADD the attached TAB to the Plan Sheet C.2:

Tab. 110-1 : 08-01-08 ADD the attached TAB to the Plan Sheet C.3:

Tab. 112-6 : 10-21-08 Make the following change to the Plan Sheet C.2:

Tab. 105-4 STANDARD ROAD PLANS: 10-18-11

Add Standard Road Plan RF-38 04-20-10 Make the following changes to the Plans:

Delete the following Plan Sheets U.1, and U.2

ADD the attached Plan Sheets U.1, U.2, and U.3

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PROPOSAL ADDENDUM - SCHEDULE OF PRICES Page: 4 ******************************************************************************** Bid Order No.: 101 Proposal ID No.: 34-2189-132 Letting Date: AUGUST 21, 2012 Primary Work Type: BRIDGE APPROACH REPAIR 10:00 A.M. Primary County: FLOYD ITEMS LISTED ON THIS PAGE ARE ADDED BY ADDENDUM 21aug101.a01 UNIT BIDS MUST BE TYPED OR SHOWN IN INK OR THE BID WILL BE REJECTED. -------------------------------------------------------------------------------- | | Item | Unit Price | Bid Amount Line | Item Number | Quantity |----------------|-------------- No | Item Description | and Unit | Dollars | Cts | Dollars |Cts -------------------------------------------------------------------------------- Section 0001 (continued) ROADWAY ITEMS -------------------------------------------------------------------------------- |2122-5190501 PAVED | | | 0111 |SHOULDER, PCC (PAVED | | | |SHOULDER PANEL FOR BRIDGE| | | |END DRAIN) | 35.500| | | |SY | . | . -------------------------------------------------------------------------------- |2301-0685550 BRIDGE | | | 0112 |APPROACH PAVEMENT AS PER | 150.000| | |PLAN |SY | . | . -------------------------------------------------------------------------------- ================================================================================ | | | Total Bid | . ================================================================================

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The following Tabulations have been updated: 

 

 

1 2122‐5190501 PAVED SHOULDER, PORTLAND CEMENT CONCRETE (PAVED SHOULDER PANEL FOR SY 35.5BRIDGE END DRAIN)

2 2301‐0685550 BRIDGE APPROACH PAVEMENT, AS PER PLAN    SY 1503 2510‐6745850 REMOVAL OF PAVEMENT    SY 185.54 2527‐9263109 PAINTED PAVEMENT MARKING, WATERBORNE OR SOLVENT‐BASED    STA 47.485 2527‐9263137 PAINTED SYMBOLS AND LEGENDS, WATERBORNE OR SOLVENT‐BASED    EACH 86 2527‐9263180 PAVEMENT MARKINGS REMOVED    STA 47.487 2527‐9263190 SYMBOLS AND LEGENDS REMOVED    EACH 88 2528‐8400048 TEMPORARY BARRIER RAIL, CONCRETE    LF 3409 2528‐8445110 TRAFFIC CONTROL    LS 110 2533‐4980005 MOBILIZATION    LS 111 2551‐0000110 TEMP CRASH CUSHION    EACH 212 2602‐0000020 SILT FENCE    LF 50

100‐1A07‐15‐97

ESTIMATED PROJECT QUANTITIES

(1 DIVISION PROJECT)Item No. Item Code Item Unit Total As Built Qty.

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1 2122‐5190501 PAVED SHOULDER, PORTLAND CEMENT CONCRETE (PAVED SHOULDER PANEL FOR BRIDGE END DRAIN)   A. Included for replacement with single reinforced bridge approach section.B. Existing intakes in paved shoulder panels to be used as constructed.

‐ ‐ ‐2 2301‐0685550 BRIDGE APPROACH PAVEMENT, AS PER PLAN    

A. Bid item only includes the placement of the double and single reinforced sections.B. Existing subbase material to be recompacted and any new subbase material to be compacted, refer to   'U' Sheets for details.C. Upper subdrain and outlet near abutment to be removed and backfilled with modified subbase, quantity   estimated at 50 ton.D. See Tab. 112‐6 for further information.E. Method of Measurement will be in square yards of installed bridge approach sections.F. Basis of Payment will include all material, equipment, and labor needed to install the bridge approach   section and sleeper slab as defined in the plans and on detail sheets U.1 ‐ U.3.

‐ ‐ ‐3 2510‐6745850 REMOVAL OF PAVEMENT    

A. Refer to Tabs. 110‐1 and 102‐5 for further information.  Includes 35.5 SY of paved shoulder panels.B. Required for removal of double and single reinforced bridge approach sections.  Care should be used to    avoid damage to remainder of bridge approach and intakes in paved shoulder panels.

‐ ‐ ‐4 2527‐9263109 PAINTED PAVEMENT MARKING, WATERBORNE OR SOLVENT‐BASED    

A. Refer to Tab. 108‐22 for further information.‐ ‐ ‐5 2527‐9263137 PAINTED SYMBOLS AND LEGENDS, WATERBORNE OR SOLVENT‐BASED    

A. Refer to Tab. 108‐29 for futher information.‐ ‐ ‐6 2527‐9263180 PAVEMENT MARKINGS REMOVED    

A. Refer to Tab. 108‐22 for futher information.‐ ‐ ‐7 2527‐9263190 SYMBOLS AND LEGENDS REMOVED    

A. Refer to Tab. 108‐29 for futher information.‐ ‐ ‐8 2528‐8400048 TEMPORARY BARRIER RAIL, CONCRETE    

A. Refer to Tab. 108‐33 for further information.‐ ‐ ‐9 2528‐8445110 TRAFFIC CONTROL    

A. Southbound US 218 traffic to be maintained by staged construction, refer to Standard Road Plan TC‐421   for additional details.B. Southbound US 218 exit ramp at IA 14 to remain open at all times.C. Northbound US 218 and IA 14 traffic to be maintained at all times.

‐ ‐ ‐10 2533‐4980005 MOBILIZATION    

A. None.‐ ‐ ‐11 2551‐0000110 TEMP CRASH CUSHION    

A. Quantity includes a placement and a move of a sand barrel array to protect temporary barrier rail placed   to stage construction, see Standard Road Plan TC‐421.B. Refer to Typical 8210 and Tab. 108‐33 for further information.

‐ ‐ ‐12 2602‐0000020 SILT FENCE    

A. Quantity included for protection of foreslope as upper subdrain outlet is removed.‐ ‐ ‐

100‐4A10‐29‐02

ESTIMATE REFERENCE INFORMATIONItem No. Item Code Description

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SY LF No.656+00.0 656+20.0 Concrete 92.0 Double reinforced bridge approach section.656+20.0 656+40.0 Concrete 93.5 Single reinforced bridge approach section with shoulder.

Intakes and

Utility 

AccessesRemarks

110‐108‐01‐08

REMOVAL OF PAVEMENTRefer to Tabulation 102‐5

* Not a Bid Item

Begin

Station

End

Station

Pavement

Type

Area Saw Cut*

**

Class 'A'*

Inches

FTSY

SYSY

F or M

LFSTA

Side

CYCY

TON

SY651+37.605 SB

N12.0

40.0

0.0

58.0

92.0

M (1)

UAC

UAC

UAC

UAC

UAC

162.900

UAC

50 ton Modified estimated to fill existing void

and add to existing base material.

NOTE:

(1) Existing abutment is moveable, bridge approach section to be constructed as fixed.  See Detail Sheets U.1‐U.3.

112‐6

10‐21‐08

BRID

GE A

PPRO

ACH 

SECT

ION

Refer to the RK‐Series.

* Not a bid item

Thickness

*

Remarks

Bridge Station

End

Pay

Length

Non‐Reinf.

Pavement

Area

Single‐

Reinf.

Pavement

Area

Double‐

Reinf.

Pavement

Area

*

Perforated 

Subdrain 4"

Location

Approach Pavement

Fixed or

Movable

Abutment

Subdrain

*

Subdrain Outlet

Porous 

Backfill

Crushed Stone 

Backfill

Modified 

Subbase

Polymer 

Grid

T

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