QA_09-23-21.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