BIDDER'S INQUIRIES & RESPONSES
DISTRICT 11 CONSTRUCTION


CONTRACT NO: 11-265304
ROUTE / PM 11-SD-15-0.5/M4.0
LOCATION In San Diego County In San Diego From 0.1 Mile North Of Main Street Undercrossing To 0.4 Mile South Of Landis Street Pedestrian Overcrossing.
DESCRIPTION Place RHMA (gap Graded), Grind PCC, Install MBGR And Curb Ramps.
CONTRACT TYPE A + B Bidding
ESTIMATE $5,300,000
WORKING DAYS

135

ADVERTISE DATE 10/31/2011
BID OPENING 12/15/2011  01/05/2012  01/19/2012
FINAL POSTING
01/04/2012 @ 10:00

Bid Summary

The Caltrans District 11 Office is located at 4050 Taylor Street, San Diego, CA 92110. The District 11 Duty Senior telephone number is (619) 688-6635. Please submit all inquiries in the proper format by fax to (619) 688-6988 or e-mail to:
Duty_Senior_Const_District11@dot.ca.gov.
The responses to bidder' inquiries, unless incorporated into a formal addenda to the contract, are not a part of the contract and are provided for the bidder's convenience only. In some instances, the question and answer may represent a summary of the matters discussed rather than a word-for-word recitation. The responses may be considered along with all other information furnished to prospective bidders for the purpose of bidding on the project. The availability or use of information provided in the responses to bidder' inquiries is not to be construed in any way as a waiver of the provisions of Section 2-1.03 of the Standard Specifications or any other provision of the contract, the plans, Standard Specifications or Special Provisions, nor to excuse the contractor from full compliance with those contract requirements. Bidders are cautioned that subsequent responses or contract addenda may affect or vary a response previously given.
Caltrans District 11 Construction Department has developed this method of answering Bidder's Inquiries to better serve the needs of the Contractors who bid on our Projects. Caltrans District 11 Construction Department will post all of the questions submitted by any of the contractors that are registered Planholders for that Contract, but reserves the right to not answer any questions deemed unsatisfactory for public viewing.
The BIDDER'S INQUIRIES & RESPONSES will be updated continuously and all attempts will be made to do the final posting by 15:00 on the day prior to the bid opening.


INFORMATION AVAILABLE



BID ITEMS
 SPECIALS
PLANS
 PLANHOLDERS



ORDERING PROJECT PLANS AND SPECIFICATIONS   

  * Cost per set: Bidders: $E-ad, Non-bidders: $E-ad


ADDENDUM


ADDENDUM #2 ADDENDUM #3  ADDENDUM #4

BIDDER'S INQUIRY SUBMITTAL FORM


Inquiry No.
Inquiry

   1

  Q:12/01/11
R:12/08/11
R: 12/27/11

Plan Sheet / Specification Reference=  Item 47, Plan Sheet 25,89

Question= Referencing Plan sheet 25 and the call our for the Type 60F railing.  The plan sheet shows two locations for a total of 20ft.  The location is under the bridges for Route 94 at the first set of columns from the abutment.  In looking at the sight the embankment intersects the roadway plane on the traffic side of the columns.  Currently the MBGR protects the columns.  This contract removes the MBGR and replaces it with Type 60 and 60F rail.  The 60F rail is shown at the first column and the last column in this row.  Reference to Revised Standard Plan A76C and the Standard Specifications, Type 60F requires a double run of rail, one on each side of the column and a transition to Type 60 rail with a twenty to one taper.  Assuming the column is three feet wide the required taper is 60ft long on each end of the column.  To construct the 60F rail without showing a modification on the plans requires the removal of the embankment to create working room for the construction of the rail on the embankment side of the column. 

The question is. "Is this really what Caltrans desires at these columns?"  Or they only desire a single run of Type 60 rail with 4 inches of foam between the rail and the column and all Type 60 rail on the traffic side of the column?
  • An addendum is forthcoming to address this issue.
  • Please see Addendum #3

   2

  Q:12/02/11
R:12/02/11

Plan Sheet / Specification Reference=  PLAN SHEET 13/116, LAYOUT, L-1

Question= PLAN SHEET 13/116, LAYOUT, L-1, shows a legend with a call out "REPLACE AC SURFACING".  That legend is used in two locations on the outside shoulder of the northbound roadway. PLAN SHEET 73/116, QUANTITIES, Q-3, lists the two locations with the remark "NB - RIGHT SHOULDER - AC SURFACING". We find no detail that reveals the meaning of "REPLACE AC SURFACING", nor a pay item that defines the method payment for such work.
Question=What work is required? What is the nature, thickness and volume of the material to be removed?  What thickness of what type of AC is required?  Is there any base material planned?  Under what contract pay item or items is this work to be compensated?
  • Please refer to the following:
    • Plan Sheet 71 (Q-1) for the quantities
    • Plan Sheets 2 (X-1) and 8 (X-7) for the details
    • Section 10-1.32 "Replace Asphalt Concrete Surfacing" of the Special Provisions
    • Bid Item 23 Replace Asphalt Concrete Surfacing
3
  Q:12/02/11
R:12/08/11
Plan Sheet / Specification Reference=  PLAN SHEET 9/116, CROSS SECTIONS, X-8, NB/SB OFF RAMP TO OCEAN VIEW, X-9, NB/SB OFF RAMP TO MARKET STREET (RAMP TERMI).  The referenced typical sections indicate a 0.25' layer of HMA-A directly undere the JPCP.

Question= These ramp termini locations are required to be done under a weekend traffic closure.  Necessariy, with all the ancillary work involved, these will be done one location on a given weekend.  Consequently, the 0.25' layer of HMA-A would require mobilization of a full AC paving crew, including a hot plant, for an asphalt material tonnage per location ranging from 66 to 82.5.  This is a very costly and not very practical situation.  Would the deparment consider CTB or lean concrete base as an alternate to HMA-A as an underlayment?  The problem is exacerbated by the limitation to one use of the weekend closure at each location.  That forces the cold planing and repaving of the remainder of the ramp to be a concurrent operation with the ramp termini rapid set concrete, adding to the congestion of the work area and increasing the cost of construction.  Would the department allow two weekend closures per ramp termini location to alleviate this condition?
  • Please bid per the current contract documents.

 

4
  Q:01/02/12
R:01/04/12

Plan Sheet / Specification Reference=  BID BOOK:

Question= The bid sheets included with addendum #3 have two issues: The page numbers are wrong. The COST PER DAY factor is mis-stated as $X,XXX.00 per day. IS THIS INTENTIONAL?
  • Please see Addendum #4 for corrections.

 

5
  Q:01/03/12
R:01/04/12

Plan Sheet / Specification Reference=  Item 45- Alternative Flared Terminal System - 24 EA:

Question= Addenda 3 revised bid item list shows item 45- Alternative Flared Terminal System Quantity has been changed to 5 EA, however Summary Of Quantities Sheet Q-2 still indicates 24 required.
  • Please see Addendum #4 for corrections.

 

 


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