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Viewing inquiries for 04-1Q4604

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Inquiry #1: FYI. Caltrans to All Bidders - How do I register for Mandatory Pre-Bid Meeting?
Inquiry submitted 11/20/2023

Response #1:Please do not use the Bidder Inquiry platform for Mandatory Pre-Bid Meeting registration; it is for inquiries related to bidding on the project contract. Register in advance of the Mandatory Pre-Bid Meeting, and no later than 1 hour before the meeting time, by sending an email with bidder information to D4.Construction.Duty.Senior@dot.ca.gov Please include the project number & "Mandatory Pre-Bid Meeting", within the subject of the email.
Response posted 11/20/2023


Response #2:See below for the list of those attending.

• BAY CITIES PAVING & GRADING INC
• DESILVA GATES CONSTRUCTION
• GHILOTTI BROS. INC
• GHILOTTI CONSTRUCTION COMPANY INC
• GORDON N BALL INC
• LINDSAY
• O.C. JONES & SONS INC
• O'GRADY PAVING
• RAIN FOR RENT

Response posted 12/15/2023


Response #3:See below for the contact list of those attending.

http://website.dot.ca.gov/dist4/construction/contracts/04-1Q4604/04-0P9804-MPBM-Contacts.pdf
Response posted 12/15/2023



Inquiry #2: Traffic Handling Plans and bid items call for the use of the Moveable Barrier for paving operations. Earlier this year, a test strip in Rio Vista showed that the use of moveable barrier during Cold Plane and Pave operations is not a good idea. The barrier transfer machine (BTM) left wheel ruts in the still warm HMA. The moveable barrier for the recent District 4 project is only being used for concrete barrier replacement work, and not during paving operations. This project only has only 1-lift of HMA paving (RHMA-G). Any rutting will be permanent. The use of moveable barrier for this project should be re-evaluated.
Inquiry submitted 11/29/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 11/29/2023


Response #2:A movable barrier system is needed for all paving work per Caltrans DIB 91 (positive work zone protection).
Response posted 12/21/2023


Response #3:Please see Addendum #3. The items of movable barrier systems has been removed.
Response posted 02/29/2024



Inquiry #3: The structure plans under general note (Design) refers to "Structure Technical Policies as of 2022".
Please verify that section 5.1 "Corrosion Protection for Structural Concrete Elements" does not apply to this project. No provisions for epoxy coated reinforcing requirement is present in the plans, specs or special provisions.
To be specific, no epoxy coated reinforcing is required.
Inquiry submitted 12/15/2023

Response #1:The inquiry has been received and submitted for consideration.
Response posted 12/15/2023


Response #2:No epoxy coated reinforcing is required.
Response posted 12/20/2023



Inquiry #4: Response to question #2
The response to question #2 does not take into account that fact the Moveable Barrier System should not be used on new HMA pavement. It was tested and failed last year.

Second - this project has approximately 40-45 shifts of RHMA paving. The shifts required to install, relocate, and remove the moveable barrier system are 20+60+20 respectively. In other words we are exposing our workers to nearly 100 shifts of non-positive work zone protection in order to have the +work zone protection for 40 shifts of paving work. This does not make sense.
Mobile Barriers could be used for protection during approach slab work, and regular lane closures should be used for the 40 shifts of RHMA paving.
Inquiry submitted 01/02/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/02/2024


Response #2:Please see Addendum #3. The items of movable barrier systems has been removed.
Response posted 02/29/2024



Inquiry #5: ITEM #97, CONCRETE BARRIER, TRANSITION-458 LF (F)inal pay:
Plan 252 of 257, sheet 1 of 4 for McLaughlin Avenue UC gives a Pay quantity of 60LF for the four CB Transitions shown. This is incorrect for the Final Pay Item.
Wil the Engineer correct the Bid item Final Pay Bid quantity?
Inquiry submitted 01/04/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/04/2024


Response #2:Refer to sheet 252 of 257 of the contract plans. The quantity of item no. 97, Concrete Barrier Transition, attributed to McLaughlin Avenue UC is 60 LF. The total quantity for item no. 97 is 458 LF. Refer to sheets 225, 229, 234, 238, 243, 248, 252, and 256 of 257 for quantities for item no. 97 attributed to the other locations.
Response posted 01/10/2024



Inquiry #6: PLEASE REFERENCE the ENGINEER'S RESPONSE to INQUIRY #5.
Please refer to Plan 255 of 257. This Plan indicates that there is one (1) CBT, Type 1, Departure @ 15'-0". All other Structure Plan details indicate that the CBT, Type 1, Departure is a length of 24'-5-3/8".
Is Plan 255 correct @15'-0"?
Inquiry submitted 01/10/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/10/2024


Response #2:Yes, the departure barrier transition at McLaughlin Ave UC is the only 15’-length departure transition, as shown on plan sheet 255 of 257.
Response posted 01/12/2024



Inquiry #7: For Bid Item #14 “Lateral Shift of Movable Barrier”. How is Caltrans intent to pay for this work, is it for each lane and each time we move? How is Caltrans come up with the quantity of 300 EA? Please clarify.
Inquiry submitted 01/18/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 01/18/2024


Response #2:Please see Addendum #3. The items of movable barrier systems has been removed.
Response posted 02/29/2024



Inquiry #8: Is it possible to use a Concrete Volumetric Truck for the minor concrete portion?
Inquiry submitted 02/06/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 02/06/2024


Response #2:Caltrans is not familiar with the concrete volumetric truck and all the methods; quality control and quality assurance need to comply with Caltrans Spec.
Response posted 02/14/2024



Inquiry #9: When will Addendum #3 be available?
Inquiry submitted 02/20/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 02/20/2024


Response #2:Addendum #3 has been posted.
Response posted 02/29/2024



Inquiry #10: Could we propose handling the clear and grubbing scope for the prime contractors on a T&M basis?
Inquiry submitted 03/10/2024

Response #1:The inquiry has been received and submitted for consideration.
Response posted 03/11/2024


Response #2:Caltrans contracts with the prime contractor only. Please be aware the prime contractor has to meet the DBE requirements.
Response posted 03/12/2024

The information provided in the responses to bidder inquiries is not a waiver of Section 2-1.07, "JOB SITE AND DOCUMENT EXAMINATION" of the Standard Specifications or any other provision of the contract, nor to excuse the contractor from full compliance with the contract. Bidders are cautioned that subsequent responses or contract addenda may change a previous response.