QA_09-28-21.pdf

OR DOT CRGNSA 100(6)

Historic Columbia River Highway State Trail, Viento to Mitchell Point Crossing

# General Technical Question Answer Date

1 X Please confirm this project was intended to be Small Business Set‐Aside.

Yes. This is a Small‐Business Set‐Aside Project according to the top right box on the first page of the solicitation, and FAR Clause 52.219‐6.

9/13/21

2 X

The documents posted to sam on this project list bids due 9/30, but the sam website itself lists 10/1. When are bids due by on this project?

Will be addressed under Amendment A001 9/16/21

3 X

Please clarify that the Concrete coloring agent section 550.02 does not apply the to the Mitchell Creek Bridge Arch Culvert.

Listing the concrete coloring agent in section 550.02 is not meant to indicate that the coloring agent applies to the Mitchell Creek Bridge Arch Culvert. Per 552.03, Mitchell Creek Bridge Arch Culvert is not among the elements that are specified to have concrete coloring agent.

9/21/21

4 X

Please clarify that the Plant casting the Mitchell Creek Bridge Arch Culvert does not require the B‐4 Prestressed Deflected Strand Bridge Beams certification in section 552.11 (b)(6)(a). Precast Arch Structures are not Prestressed and most facilities do not cast both Precast Arches and Prestressed Structures and therefore do not seek that certification.

The Plant Casting requirement in Section 552.11(b)(6)(a) applies to the Perham Creek bridge. For the Mitchell Creek Bridge Arch Culvert, use a precast concrete manufacturing plant certified by the Precast/Prestressed Concrete Institute Plant Certification Program with a “B‐1 Precast Bridge Products (No Prestressing Reinforcement)” certification

9/21/21

Check General or Technical

5 X

Please clarify the requirements for Assembly of each superstructure and substructures prior to shipment to site in Section 552.11 (b)(6)(c) does not apply to the Mitchell Creek Bridge Arch Structure. Precast arch elements are cast on their sides and not fully rotated until set on their foundation. The Butt joints utilized for CON/SPANs are not typically a fit up issue in the field.

Section 552.11(b)(6)(c) requires verification that the prefabricated elements will fit‐up and align properly before shipping from the precast facility. This section indicates that assembly in the yard would be a suitable way for performing such verification, but this is not required.

9/21/21

6 X

Please provide the loading applied to the end arch elements by the cast in place concrete headwalls for the Mitchell Creek Bridge Arch Structure

The figure below provides the loading due to the cast‐in‐place concrete headwall. It is assumed that the weight of the masonry veneer will be carried through the headwall directly to the abutments once it is cured, and not load the precast arch culvert.

9/21/21

7 X

In lieu of casting bolts in the end pieces of the Mitchell Creek Bridge Arch Structures, can inserts be provided so that hook bolts or rebar can be field installed

Substitution of a form saver , or insert, that fully couples and fully develops an embedded #4 reinforcing bar with a 90 degree hook in the precast culvert concrete and provides adequate concrete cover, would be accepted. The culvert shop drawings would need to detail the insert and adequate reinforcing development.

9/21/21

8 X

Hi, Are the rebar lists on pages HM.09, HM.10, HP.14, HP.15, HP.16, HP.17 and HP.18 supposed to be filled out or where do we find the dimensions?

FP‐14 Sub‐section 554.03: it is the responsibility of the contractor to submit order list and bending diagrams. Please bid accordingly. 9/21/21

9 X FAR 52.225‐12 – Please clarify if this contract will be subject to Buy American requirements.

We request determination of applicability.

This will be addressed under Amendment A002. 9/23/21

10 X

Item No. A0480 20304‐1000 Removal of Structures & Obstructions (Contaminated Soil).

Can measurement and payment be more delineated or can this item be measured by the ton of disposed soil?

Unit of payment for Item No. A0480 20304‐1000 Removal of Structures & Obstructions (Contaminated Soil) is LUMP SUM.

Please bid accordingly.

9/23/21

11 X

The Solicitation , Offer and Award page A‐3 (13.)

says the bid is due 9/30/22021 at 1400 as well as the top of the INVITATION FOR BIDS. The General Information Section on beta.sam says Offers Due: Oct 1, 2021 2:00 PM PDT. Please clarify the date this bid is due.

This will be addressed under Amendment A002. 9/23/21

12 X Can this bid be postponed for two weeks?

No, but the bid opening date will be changed under Amendment A002.

9/23/21

13 X Would you please provide the unfactored micropile design loads for the Perham and Mitchell Bridges?

This will be addressed under Amendment A003. 9/27/21

14 X

Sheet numbers HP.4 and HM.4. The minimum bond length diameter is not specified. Would you provide the minimum bond length diameter?

This will be addressed under Amendment A003. 9/27/21

15 X

Sheet numbers HP.4 and HM.4. The top plate detail shows it being welded to the permanent casing. The permanent casing is specified as API N‐80 casing. API N‐80 casing is not a prequalified material by the AWS due to the materials high carbon content and difficulty in welding. Can the detail be revised to remove the welding requirement?

This will be addressed under Amendment A003. 9/27/21

16 X

Are the areas indicated on this solicitation accessible or are there gates that control the areas? I suspect since there are no tours that it is all public access, but would like confirmation before mobilizing for site walks.

The Notice to Bidders does not indicate there are any locked gates, but there may be other contracts being performed during your planned site visit, so follow the requirements of Subsection

104.06 when performing site visits within the project limits.

9/27/21

17 X

Per bid item Y1140, Concrete Headwall, the bid item quantity is 2 each. Does the measure and pay for this bid item include the concrete headwalls at Mitchell Creek Bridge complete including the cubic yards of concrete? Or are the cubic yards of concrete for these headwalls paid under bid item Y0780, Structural Concrete Class A (AE) (Mitchell Creek Bridge)?

Bid Item Y1140 will be removed under Amendment A003. 9/27/21

18 X Can you tell me if there is a plan holder list available for this job?

Obtain the registered vendors list (aka planholders list) for this project as follows. Register in sam.gov and link your entity to your registration. After doing this, log into sam.gov to find the interested vendors list under this announcement. Contact the Federal Service Help Desk if you experience further issues.

9/27/21

19 X

Also do you know what size the asphalt rock is?

It says type 1, 4” depth but not a size. The specs say binder will be 70‐22ER and 64‐22, but on the plans I don’t see it called out any ware. Can you help me?

Asphalt concrete aggregate requirements for work under Section 401 are specified under Subsection 703.07 (See FP‐14 Subsection 401.02); and asphalt concrete aggregate requirements for work under Section 403 are specified under Subsection 403.02(a).

9/27/21

20 X

What are the steel escalation clauses considering the current supply chain issues, extreme raw materials cost increases and the completion dates of 2023 and 2024?

This solicitation does not have any steel escalation clauses.

Please bid accordingly.

9/28/21