BIDDER'S INQUIRIES & RESPONSES
DISTRICT 11 CONSTRUCTION


CONTRACT NO: 11-089754
ROUTE / KP 11-SD-805-40.6/42.4
LOCATION In San Diego County In San Diego From 0.2 Km South Of Nobel Drive Overcrossing To 0.1 Km North Of Eastgate Mall Overcrossing
DESCRIPTION Interchange Improvements And Road Widening.
CONTRACT TYPE A + B Bidding
ESTIMATE $16,835,000
WORKING DAYS

625

ADVERTISE DATE 08/23/2010
BID OPENING 10/14/2010
FINAL POSTING
10/13/2010 @ 15:00

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
INFORMATION HANDOUT
08/24/2010
X-SECTIONS
UPDATED X-SECTIONS
09/29/2010

ORDERING PROJECT PLANS AND SPECIFICATIONS   

DVBE participation incentive up to $250,000 * Cost per set: Bidders: $E-ad, Non-bidders: $E-ad



ADDENDUM



 

BIDDER'S INQUIRY SUBMITTAL FORM


Inquiry No.
Inquiry

   1

  Q:08/24/2010
R:09/03/2010

Plan Sheet / Specification Reference= Special Provisions Section 5-1.11 Supplemental Project Information - Electronic Cross Sections.


Question= Special Provisions Section 5-1.11 Supplemental Project Information page no. 21 states that cross sections are available on this project. When will the elecronic cross sections be available to download for our use?

  • Cross sections are available as of 09/03/2010 and can be downloaded for printing from the link above at any local printing firm or on your own printing equipment:

 

  2

  Q:08/31/2010
R:09/01/2010

Plan Sheet / Specification Reference= General Provisions


Question= Is this project subject to postponement as the other previously postponed district 11 projects? Will the bid date for this project be postponed if the state Budget is not secured before the bid date or is the funding for this project secured and Caltrans does not foresee postponement?

  • No postponement of the bid opening is anticipated at this time due to the local funding of the construction costs

 

  3

  Q:09/13/2010
R:09/30/2010

Plan Sheet / Specification Reference= item 29 Crash Cushion Absorb 350 sheet sc-28 and sc-29


Question= What type of crash cushion are to be placed per sheet sc-28 and sc-29?
The callout states Crash Cushion (type react 350-910mm)
The Quantity sheet (scq-2)calls for Temp Crash Cushion Absorb 350
.

  • Please refer to Addendum No. 1

  4

  Q:09/22/2010
R:09/29/2010

Plan Sheet / Specification Reference= Special Provisions Section 5-1.11 "Supplemental Project Information"


Question= The electronic file for Line "M-2R" cross sections is the same as Line "M-2RA". Will a new superseding Line "M-2R" file be provided?
 

  • Updated Cross sections are available at the link above dated 09/29/2010.

 5

  Q:09/27/2010
R:09/30/2010

Plan Sheet / Specification Reference= 84- Cement Treated Base (Plant Mixed, Class A) 10-1.54


Question= Caltrans specifies that the CTB shall be spread using the Type B method. Methods available are Type 1, 2 or 3. Please clarify.
 

  • Please refer to Addendum No. 1

 6

  Q:10/05/2010
R:10/06/2010

Plan Sheet / Specification Reference= addendum#1, Bidders inquiry question #5


Question= In choosing a placement method for the Cement Treated Base, why did you select the one that is most applicable for CTB placed on an Airport Runway or under PCC Pavement on highway mainlines? CTB on city streets is placed most often by methods resembling method 3. This job is staged and cut up into tiny pieces on Miramar Rd. Would you consider Method 3 to save a little money and time and bring CTB placement on City Streets into compliance with the way it is placed elsewhere in the City of San Diego?
 

  • Please bid per the current contract documents.

 7

  Q:10/06/2010
R:10/07/2010

Plan Sheet / Specification Reference= Typical Cross Sections for "M" Line


Question= Typical Cross Sec detail for Structural Section 5 appears to indicate that CTB section is to extend / be placed under curb & gutter. This is not standard for City of San Diego roadwork. Clarify if CTB is
to extend / be placed under curb and gutter in Section 5 areas. Typical Cross Sec detail for Structural Section 4 and curb adjacent to it. Appears the thicknesses are represented reversed for 4. But the
question is that it appears that the curb is to be installed on some type of base section. Is the PCC Base layer to extend under the curb when Section 4 is adjacent?
These items significantly effect cost to place CTB & PCC Base, as well as excavation. Please review and clarify.

 

  • Please bid per the current contract documents.

 8

  Q:10/07/2010
R:10/07/2010

Plan Sheet / Specification Reference= Plan sheets page 228 of 567 (utility quantities)


Question= The utility quantity sheet lists 9 separate items of work. 4 of the items have bid items to cover the payment for the work. Where will payment be made for the other 5 items?

  • All the 9 items on the utility quantity sheet have all bid items. Please refer to the special provisions "Copy of Bid Item List" as Items 42, 46, 55, 78, 79, 103, 131, 132 and 172.

 9

  Q:10/07/2010
R:10/11/2010

Plan Sheet / Specification Reference= Plan Sheets SD1 & SD2 refer to RSP S7 FND & RSP S49 FND.


Question= I can not find these referenced RSP sheets within my plan sheet package. Please provide. If I'm overlooking the obvious, I apologize, but I still need direction. Regardless, would someone help me obtain the (2) RSP sheets?

 

  • Please bid per the current contract documents. For all current 2004 Revised and New Standard Plans (Click Here)

 

 10

  Q:10/08/2010
R:10/13/2010

Plan Sheet / Specification Reference= The INFORMATION HANDOUT provides foundation recommendations for the abutments @ the La Jolla Village Drive over-crossing, but does not address soil conditions at the locations of the sign structure CIDH's.


Question=Are there logs of test borings that can be provided, or should it be assumed that the drilling will be in clean, dry & firm soil?

  • Available geotechnical data has been provided. Please bid per contract documents.

 11

  Q:10/08/2010
R:10/11/2010

Plan Sheet / Specification Reference= Section 10-1.70 SIGN STRUCTURES does not address the removal of the existing sign structures.

Question= As is typical with sign structure removals, are the foundations to be abandoned at 3' below grade, or removed completely.

  • Please refer to section 10-1.36 "Existing Highway Facilities", "Remove Sign Structure" of the Special Provisions.

 12

  Q:10/08/2010
R:10/13/2010

Plan Sheet / Specification Reference= PLAN SHEETS 272,273,288; SPECIAL PROVISION SECTION 10-1.01: ORDER OF WORK relative to staging and falsework for bridge.


Question= Plan sheets 273 and 288, staging of roadway work on ramps M-3R and M-7R, have notes stating:"THIS STAGE SHALL BE SET UP SIMULTANEOUSLY WITH WEST/EAST STAGE 3A AND BRIDGE DECK STAGE 3A". Plan sheet 272, "BRIDGE STAGE 3A", is the plan depicting the falsework construction for the bridge work. These notes, taken together, with Section 10-1.01 of the Special Provisions, ORDER OF WORK, which states (paragraph 19, page 47) "The work shall be performed in conformance with the stages of construction shown on the plans", with strict stipulations regarding contractor proposals to proceed with the work otherwise. As this is an A + B project, indicating a desire by Caltrans to finish the job as soon as possible, this seems to be an unnecessary delay in beginning bridge contruction which results in a delay in completion of the entire project, unless there is a sound, engineering basis for the delay based on information not available to the contractor. We suspect that the reason for this requirement is the lack of sufficient vertical clearance for bridge construction over ramp M-7R until it is constructed in its final configuration. Please confirm.

  • Plan sheet 273 addresses construction of Ramp "M-2RA" not "M-3R" and plan sheet 288 addresses construction of Ramp "M-6R" not "M-7R". The Contractor may submit a proposal to proceed with work in subsequent stages if the work does not conflict with work in preceding stages per section 10-1.01 of the special provisions.
  • Please bid per the current contract documents.

 13

  Q:10/08/2010
R:10/11/2010

Plan Sheet / Specification Reference= SPECIAL PROVISIONS SECTION 10-1.03, WATER POLLUTION CONTROL


Question= Paragraph 2, page 48, of this section 10-1.03 states, "Do not start work until: 1. SWPPP is accepted, 2. WDID is issued 3. SWPPP has been reviewed by the RWQCB. If the RWQCB requires time for SWPPP review, allow ENOUGH time for the RWQCB to review the SWPPP as specifiec under"Submittals" of these special provisions." Subparagraph "Submittals", page 49, same section, subparagraphs 1,2,& 3 contain language that seems to limit the total time for the Engineer's review to 20 days. However subparagraph 4 seems to grant the RWQCB an undefined review and comment period, after which the Engieer may request changes based to the SWPPP based on the RWQCB comments, with and amended SWPPP due within 10 days. The question is: On an A + B project with a stipulated dollar value of $14,400 per day for bid comparison and potentially as liquidated damages, how can the contractor simply allow "ENOUGH" time for the RWQCB review?

 

  • Please bid per the current contract documents.


 14

  Q:10/11/2010
R:10/11/2010

Plan Sheet / Specification Reference= INFORMATION HANDOUT


Question= The very last page of the INFORMATION HANDOUT for this contract is a memo from Ncik Haigh, Senior Transportation Engineer, dated March 18, 2010 to Abdyl Malikyar./Ed Gajj, relating telephone conversations with an official of the City of San Diego Miramar Landfill (Harry Snowden) in which a commitment was made to accept up to 1,000 cubic yards of clean dirt per day. Now, Mr.Snowden's position is that the landfill cannot accept any guaranteed amount of clean dirt per day and dirt is accepted on an "as needed" day-to-day basis. Which condition should a contractor base a bid upon:guaranteed acceptance of 1,000 cubic yards per day; or day-to-day acceptance at the discretion of the landfill?

  • Please bid per the current contract documents.


 15

  Q:10/13/2010
R:10/13/2010

Plan Sheet / Specification Reference=


Question= 1- Ref Contract Items 34 and 147- Several locations of existing protective railing are either Single Thrie Beam Barrier or Bridge Approach Railing. Your layout plan and quantity summary callouts for work of removing existing, or installing new railing, incorrectly identify these as " MBGR" Removal or installations. Because the required work is of a different character we interpret that these errors will be corrected by CCO after award. Please confirm this interpretation, or provide corrections, by addendum to all bidders, before the bid date.

  • Please bid per the current contract documents.


2- Ref Contract Item 156- Both plan locations calling for Type 60SC Concrete Barrier are unclear as to what your requirements for this work really are. Standard Plan A 76G requires certain details, which are dictated by the pavement vertical offset. The initial and revised cross sections available on your website for M 7R and M 3R stationing do not provide the information needed to comply with Standard Plan A 76 G. In fact those initial and revised cross sections indicate some unusual concrete barrier detail, apparently with a bellow grade footing. We interpret that these ambiguities will be corrected by CCO after award. Please confirm this interpretation, or provide corrections, by addendum to all bidders, before the bid date.

  • Please bid per the current contract documents.


   

 


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