BIDDER'S INQUIRIES & RESPONSES
DISTRICT 11 CONSTRUCTION

 
CONTRACT NO: 11-283704
ROUTE / KP 11-SD-52-4.9/6.2
LOCATION In San Diego County In San Diego From 0.6 Miles West Of Convoy Street Overcrossing To 0.7 Miles East Of Convoy Street Overcrossing
DESCRIPTION Cold Plane Asphalt Pavement And Place Hot Mix Asphalt.
ESTIMATE $ 1,730,000
WORKING DAYS

55

ADVERTISE DATE 08/04/2008
BID OPENING 09/11/2008
FINAL POSTING
09/10/08   @   1720

BID RESULTS

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 Wednesday prior to the bid opening.
INFORMATION AVAILABLE

X-SECTIONS
08/14/08

BID ITEMS
 SPECIALS
PLANS
 PLANHOLDERS



ORDERING PROJECT PLANS AND SPECIFICATIONS

ADDENDUM



 

BIDDER'S INQUIRY SUBMITTAL FORM


Inquiry No.
Inquiry
    1 

   Q:08/11/08
   R:08/14/08

Plan Sheet / Specification Reference= 

Question= Are X-sections available? When and where can they be picked up?

  • Cross sections are available as of 08/14/08 and can be downloaded for printing from the link above at any local printing firm or on your own printing equipment:

     MESA REPROGRAPHICS 
     5560 Ruffin Road Suite 5 
     San Diego, CA 92123 
     (858) 541-1500    FAX (858) 278-0558 
     e-mail to  plot@mesareprographics.com San Diego, CA 92123

    2 

   Q:08/15/08
   R:09/02/08

Plan Sheet / Specification Reference= Item #13, 19, & 7.

Question= 1.  Is there a point elevation grid diagram for each lanes (both the existing and proposed grades)?  We believe this is needed to determined cuts and fills for cold planing and proposed asphalt final grades.

  • Above X-SECTION link Should provide adequate information for doing take-offs and calculating quantities.

2.  What is the State's surveying scope of work to insure grade control?

  • Caltrans Surveys would be available to provide survey stakes reflecting offsets, elevations and grade breaks across the roadway, upon contractor's request.

    3 

   Q:08/25/08
   R:09/02/08

Plan Sheet / Specification Reference= Item #13 "Cold Plane Asphalt Concrete Pavement" and #19 "Hot Mix Asphalt Type A".
Special Provisions page 62 "Cold Plane Asphalt Pavement"

Question= Would it not be a better idea, to cold plane and install temporary delineation to all areas first, and then, in a separate operation (not in the same shift), repave those areas requiring asphalt concrete overlay?

  • In accordance to section 10-1.20 EXISTING HIGHWAY FACILITIES, COLD PLANE ASPHALT CONCRETE PAVEMENT (Page 62) of the Special Provisions "The Contractor shall schedule paving operations so that cold planed areas are paved with hot mix asphalt within the same work shift."


    4 

   Q:09/03/08
   R:09/05/08

Plan Sheet / Specification Reference= 10-1.24 Hot Mix Asphalt page 67 of Special Provision

Question= Is this a QC/QA project or Standard project?

  • This is a standard contract.
5  

   Q:09/05/08
   R:09/09/08

Plan Sheet / Specification Reference= 1) Item 13 Coldplane AC and Item 19
HMA (Type A)in regards to CT Bidders Inquiry Response to Inquiry No. 2 2) Item 19 HMA (Type A)Section 29 Amended Specifications

Question=1) A. The Design Study Cross-Sections show only a finish elevation point at EP and ETW. Reduced scale of these drawings and the heavy line weight make it difficult at best to quantify what the anticipated variable milling and overlay will be. Will CalTrans be unable to provide any pre-existing grade information for the referenced points on the cross-sections?

  • Please refer to the Profile sheets of the contract plans and the X-SECTIONS link above for information.

B. How will CalTrans Survey provide grade information across the roadway?

  • Please refer to the response to question No. 2 part 2.

Will this work require traffic control by the Contractor?

  • No.

If so, how will payment be made? Which Traffic Charts will CalTrans use?

2) A. As this project is a continual maintenance project for the settling roadway, is it justifiable to incur the added cost of material coring and testing specified in the Amended Section 39 Specifications?

  • Yes.

B. Does CalTrans intend to enforce Section 39-1.12 "Smoothness" of the Amended Specifications?

  • Yes.

 

6  

   Q:09/09/08
  R:09/XX/08

Plan Sheet / Specification Reference= 

Question= The Special Provisions specify this project falls under the Standard Specifications dated 2006. Will the testing and mix design requirements of the HMA be the same as in the 2006 Section 39?

  • The 2006 Standard Specifications are to be used with the updates to section 39 as inlcuded in the SSPs.

Will Caltrans determine the asphalt OBC?

  • OBC to be determined by Section 39 included in the SSP.

If RAP is used in the HMA, what specific testing procedules will Caltrans require for mix design and production?

  • The Section 39 included in the SSP's will govern the use of RAP.

Will there be a TSR requirement for the HMA?

  • CT 371 is required only for QC/QA ptojects.

   

OTHER LINKS OF INTEREST

DISTRICT 11 CONSTRUCTION BIDDER'S INQUIRIES & RESPONSES
DISTRICT 11 HOMEPAGE
CALTRANS OFFICE ENGINEER: Contract Advertisement, Special Provisions, Plan Holders, Contract Awards, etc.
DEPARTMENT OF TRANSPORTATION