Contractor's System Project Question and Answer Forum

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Submitted: Friday 14-NOV-2025 03:24 PM
Company: Riverside Contracting, Inc.
Contact: George Shick
Can MDT post the design files for the project
Answer
Submitted: Monday 24-NOV-2025 08:49 AM
The design files for the requested project are posted here: DESIGN FILES
The requested files do not represent the staked project, but are only design files.  The Department cannot guarantee the accuracy of the electronic data, particularly as it may be called up by your computer, nor does any data in these files supersede the data in the contract documents.
In addition, the Department will not make any revisions to the electronic files pertaining to the staked project, change ordered work, or changes that are made during construction to fit field conditions.

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Submitted: Monday 17-NOV-2025 07:03 PM
Company: Insituform Technologies, LLC
Contact: Brad Conder
On plan Sheet No. RD-56, a pipe dissipator detail is provided. Note 4 states to install dissipator rings for culvert liners at Stations 139+15, 180+54, and 428+71. However, plan Sheet No. RD-55 shows CIPP liners being installed at Stations 180+54 and 428+71. Are you intending that the 48" CIPP liner be installed first, and that the 44" steel pipe with dissipator rings then be installed through the finished CIPP liner? How do you propose that this work could be completed without damaging the newly installed CIPP liners? Please provide further clarification.
Answer
Submitted: Friday 21-NOV-2025 10:31 AM
The contractor has the option to install steel pipe with internal dissipation rings or to use a CIPP method with appropriate internal dissipation rings that must be installed accordingly to CIPP manufacturer recommendations and standards. Only one rehabilitation method may be used at each crossing location, a CIPP liner should not be installed in addition to a steel liner.

-3-
Submitted: Monday 17-NOV-2025 06:31 PM
Company: Insituform Technologies, LLC
Contact: Brad Conder
Can you provide clarification on the Cured-In-Place Pipe (CIPP) bid quantities? In the file "9487001ADV_PLANS”, Sheet No. RD-55 on PDF pg. 55, CIPP lining is described at Stations 180+54 and 428+71 (total 534 LF of 48"). However, in the file "“9487001ADV_PROPOSAL”, the bid Schedule of Items does not include any CIPP bid items.
Furthermore, in the file "“9487001ADV_PROPOSAL”, Cured-In-Place Pipe (CIPP) Drainage Structures, Article 42.E.2.c (PDF pg. 39) states to remove the existing baffle before installing the CIPP liner in the 108" pipe at Station 267+82, which contradicts Sheet No. RD-55 which calls out a new steel pipe being inserted not CIPP lining. In the next paragraph, Article 42.E.2.d (PDF pg. 39) it states to install internal energy dissipation rings at Stations 139+15, 180+54 and 428+71 as part of CIPP lining. Again, this contradicts Sheet No. RD-55 for the pipe at Station 139+15 which calls out a new steel pipe being inserted.
If we go by the culvert lining detail on Sheet No. RD-55, we’re only CIPP lining at Stations 180+54 and 428+71. If we go by the CIPP lining specification in “9487001ADV_PROPOSAL”, PDF pg. 39, we should be CIPP lining at Stations 139+15, 180+54, 267+82 and 428+71. If we go by the bid schedule, there’s no CIPP lining at all.
Answer
Submitted: Tuesday 09-DEC-2025 01:50 PM
The proposed culvert rehabilitation provides two options for bidding.  These options are shown on revised plan sheet RD-55.  Only one option should be included in the contractor’s bid, for the respective bid item.

The following bid items are hereby added to the contract:
104 030 100 – MISCELLANEOUS ITEMS A-LS – 1.0 LS
104 030 101 – MISCELLANEOUS ITEMS B-LS – 1.0 LS
104 030 102 – MISCELLANEOUS ITEMS C-LS – 1.0 LS
104 030 103 – MISCELLANEOUS ITEMS D-LS – 1.0 LS

The following bid items are hereby deleted from the contract:
104 030 065 – MISCELLANEOUS ITEMS A – LNFT – 1,062.0 LNFT
603 016 054 – STEEL CASING 48 IN – 178.0 LNFT

The following plan sheets have been revised for further clarification.
Plan Sheet RD-18 has been revised: RD-18
Plan Sheet RD-55 has been revised: RD-55

The following special provisions have been revised and hereby replace the ones found in the contract.
Special Provision 42. Cured-In-Place Pipe (CIPP) Drainage Structures has been revised: SP 42
Special Provision 43. Concrete Invert Lining has been revised: SP 43
Special Provision 44. Slip Lining Culverts has been revised: SP 44

An amendment will be issued, updated bid files will be posted.

-4-
Submitted: Monday 17-NOV-2025 06:49 PM
Company: Insituform Technologies, LLC
Contact: Brad Conder
In the bid Schedule of Items, Prop Line No. 0420, Item Number 603016054, Steel Casing 48", a bid quantity of 178 LF is provided. In the bid document "9487001ADV_PROPOSAL", in Article 41.A (PDF pg. 29), a table is provided that gives a bid quantity of 178 LF of 48" at Station 139+15, which seems to correspond to the bid item referenced above. However, on plan Sheet No. RD-55, the culvert lining detail gives a quantity of 166 LF of 48" at Station 139+15. Please clarify.
Answer
Submitted: Tuesday 09-DEC-2025 02:06 PM
Please refer to the response to question #3.

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Submitted: Friday 21-NOV-2025 03:09 PM
Company: Insituform Technologies, LLC
Contact: Brad Conder
We previously asked a question about internal dissipation rings and CIPP. The response provided was that the "appropriate internal dissipation rings must be installed according to CIPP manufacturer recommendations and standards". When a steel pipe liner is used, the detail on plan Sheet No. RD-55 shows the dissipation rings being welded to the steel pipe. By contrast, no detail is provided how to install and secure the internal dissipation rings when CIPP is used, since dissipation rings cannot be welded to the CIPP liner. There are also no CIPP manufacturer recommendations and standards for this work. Please provide additional details on how this work is supposed to be completed so all contractors can provide pricing on equal grounds.
Answer
Submitted: Tuesday 02-DEC-2025 02:05 PM
Plan sheet RD-56 has been updated to show the section for both CIPP and the steel liner as the dissipator rings are needed for both options: SHEET RD-56
Work with CIPP manufacturers to price this work based on the spacing and dimensions shown in the plans and the updated detail.

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Submitted: Wednesday 10-DEC-2025 03:15 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
Please clarify the intent of the "Concrete Barrier Rail" note on Plan Sheet RD-2. Specifically, does the term "reused" refer to use in temporary configurations only, or is the intent to incorporate existing Standard Concrete Barrier into the permanent configuration and therefore reduce the quantity required under the "Concrete Barrier Rail" bid item? Additionally, in either scenario, there is no pay method identified for sorting, loading, hauling, or other handling of existing barrier for reuse. Should this work be assumed to be paid under Force Account, or will MDT designate a bid item?
Answer
Submitted: Tuesday 16-DEC-2025 03:30 PM
Existing barrier should only be reused in a temporary configuration. Please refer to the Temporary Guardrail summary frame on RD-16. The effort associated with this work shall be included in the unit bid price for 618 190 110 RESET TEMP BARRIER RAIL.

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Submitted: Wednesday 10-DEC-2025 03:21 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
Please clarify the intent of Special Provision #60 – Temporary Barrier Rail. Sections B and C imply that the existing centerline two-loop barrier may be reused as Temporary Barrier Rail for the Phase 1 and 2 construction traffic control configurations. Section D.1 states that this work will be measured and paid by the foot as Temporary Barrier Rail. However, the Contract does not include a bid item for Temporary Barrier Rail. The only related item is "Reset Temporary Barrier Rail," with a quantity of 36,000 LF, which is only sufficient to account for two full project-length resets of the existing 18,000 LF of barrier. Given the construction phasing, it appears that three project-length barrier installations will be required (Phase 1, Winter configuration, Phase 2). Please review and clarify. We suggest either adding a dedicated bid item for Temporary Barrier Rail with a quantity of 18,000 LF to align with the work described in SP #60 – or add 18,000 LF to the "Reset Temporary Barrier Rail" item and clarify the measurement and payment method.

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Submitted: Wednesday 10-DEC-2025 03:19 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
Please clarify the work included under the "Crossover-Median Barrier Rail" bid item. Special Provision #5 lists removal of median barrier, temporary paving, temporary impact attenuators, signing/striping, and surfacing/stripe maintenance as included in this item. Several of these activities are already covered under separate bid items (e.g., Temporary Impact Attenuators, Traffic Control–Crossover). In addition, SP #5 and SP #56 both appear to describe overlapping work for their respective items. Please clarify which work elements are intended to be paid under each item so bidders can price the work accurately.
Answer
Submitted: Friday 19-DEC-2025 11:03 AM
Special Provision #5 Temporary Closed Median Crossover is hereby replaced with the following special provision: LINK

The following items are to be paid for separately and not included in unit price bid for CROSSOVER-MEDIAN BARRIER RAIL or TRAFFIC CONTROL-CROSSOVER bid items:

• Remove Concrete Barrier Rail (See Concrete Barrier Rail Summary Frame)
• Reset Concrete Barrier Rail (See Concrete Barrier Rail Summary Frame)
• Temporary Impact Attenuator (See Temporary Guardrail Summary Frame)

• Temporary paving
• Maintenance of surfacing, drainage, concrete barrier rail, attenuators, and erosion control.

• Setup and removal of signing, striping and traffic control devices
• Maintenance of striping, signing, and traffic control devices.

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Submitted: Wednesday 10-DEC-2025 03:22 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
Plan Sheet RD-68 includes a note directing the Contractor to backfill the temporary median between Phase 1 and Phase 2 with pavement millings during the winter shutdown, and states that this work will be paid under "Traffic Gravel." However, there is no bid item for Traffic Gravel included in the Contract. Please clarify how this work is to be paid, and provide an appropriate bid item and quantity.
Answer
Submitted: Tuesday 16-DEC-2025 03:46 PM
Bid Item 301 020 268  TRAFFIC GRAVEL is hereby added to the contract with a quantity of 1,090 CUYD as shown on sheet RD-14.  An amendment will be issued, updated bid files will be posted.

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Submitted: Wednesday 10-DEC-2025 03:18 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
Please provide a specification and applicable detail(s) for the "Ramp Crossover" bid item. Our assumption is that this item covers the temporary ramp crossover work at RP 0.0 in the general locations shown on Plan Sheet RD-67; however, the Contract currently does not contain enough information to accurately price this work. Are temporary attenuators required for these openings? Additionally, Sheet RD-67 includes labels for "RP 0.2 Closed Median Ramp Crossover," but this does not appear to relate to any existing or temporary feature. Please clarify the intent of these labels.
Answer
Submitted: Friday 19-DEC-2025 03:23 PM
As shown in the Traffic Control Summary Frame on RD-13 and the detail on RD-67, the RAMP CROSSOVER bid item refers to the WB and EB ramps at the Lookout Pass Interchange. The detail on Sheet RD-67 provides a concept showing work zones to maintain full ramp access during construction. The contractor will need to determine the signing, striping, and traffic control devices to accommodate this work.  Alternative options for ramp construction work and maintenance of traffic can be submitted for consideration after project award.  Special Provision RAMP CROSSOVER is hereby added to the contract: LINK

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Submitted: Wednesday 10-DEC-2025 03:18 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
Special Provision #3 states that the eastbound direction will be constructed in Phase 1. Please confirm whether this sequencing is mandatory, or if the successful bidder may choose which direction to construct in the first season, provided all other contract requirements are met.
Answer
Submitted: Tuesday 16-DEC-2025 03:44 PM
Eastbound construction was chosen for Phase 1 to provide newly constructed outfalls for the storm drain system and culvert replacements after the first construction season. The contractor can present alternative traffic control and sequence of operations for consideration after project award.

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Submitted: Wednesday 10-DEC-2025 03:17 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
All Concrete Barrier Rail in this Contract is located on shoulders and appears to require anchoring in accordance with Standard Drawing 605-05, Type 1 Anchor, Option 2 (asphalt substrate). Should all new Concrete Barrier Rail be cast with four pinning holes (two on each side), or are only two pinning holes required on the traffic-side face, given that anchoring is only performed on the traffic side under the referenced standard?

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Submitted: Wednesday 10-DEC-2025 03:16 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
Plan Sheet RD-60 shows project-specific modifications to MDT Standard Barrier details, including elimination of scuppers at the bottom of both Standard and Tall barrier types. The adjacent Taft-West project included scuppers in its final barrier design. Does MDT intend for this Contract to incorporate the same scupper detail for consistency across the corridor? If so, please issue a revised project-specific detail.

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Submitted: Wednesday 10-DEC-2025 03:16 PM
Company: Acme Concrete Paving, Inc
Contact: Kevin Schneider
Please confirm that the Tall Concrete Barrier Rail is not required to be anchored.
Answer
Submitted: Tuesday 16-DEC-2025 03:32 PM
Tall Concrete Barrier Rail is not required to be anchored.

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Submitted: Thursday 18-DEC-2025 10:39 AM
Company: Riverside Contracting, Inc.
Contact: Cale Fisher
With regards to the four pipe rehab culverts, are there any clearing and grubbing restrictions to either access the inlets/outlets or to provide enough work area to perform the specified rehab options? What, if any, additional permitting may be required to either access the inlets/outlets or provide a clear working area at these locations? A note was added under the Culvert summary on the amended sheet RD-18, "See Special Provisions for work that may take place outside of Right of Way". To which special provision is this note referring as it is not clear in any of the special provisions nor is it clearly stated in the amended special provisions provided in the MDT response to question 3.

-16-
Submitted: Thursday 18-DEC-2025 02:16 PM
Company: The Lighting Agency North
Contact: Frank Dugas
In the special provisions item 50 ...HIGH EFFICACY LUMINAIRE LED [617] (ADDED 4-03-25) ..B14 calls out "Furnish LEDs rated to produce a minimum of 90% intensity at 100,000 hours of life based on IES TM-21 (L90). " After an extensive search, we believe there are no commercially available roadway luminaires on the US market that meet L90 @100,000. The best we have been able to locate is L70 @ 100,000. Please advise the name of the manufacturer you are basing the L90 @ 100,000 specification on.

-17-
Submitted: Thursday 18-DEC-2025 03:47 PM
Company: Riverside Contracting, Inc.
Contact: Cale Fisher
Will MDT allow the contractor to use the MDT area at the Taft Interchange for staging and stockpiling?

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Submitted: Friday 19-DEC-2025 03:42 PM
Company: Corridor Contractors
Contact: Joe Chidiac
The installation of the 24" embankment protector and 30" CSP will require tree removal on the slopes for the pipe to be installed. Are the trees to be removed and disposed offsite? Can access to the embankment runs come from the low end of the pipe "outlet"? What bid item is tree removal paid under?

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Submitted: Thursday 18-DEC-2025 04:53 PM
Company: Riverside Contracting, Inc.
Contact: George Shick
Can MDT post the design files, dirt runs, and any additional geotechnical information?

No Questions available for this project.

No Questions available for this project.

No Questions available for this project.

No Questions available for this project.