I-81 Project Library

DOT personnel speak with local residents about I-81 Viaduct Project

Documents produced throughout the course of the I-81 Viaduct Project environmental review process are archived here. Study reports and other documents produced during the earlier I-81 Corridor Planning Study are available at that study’s website.

Record of Decision

Record of Decision

Appendix A - Response to Comments

Addendum to Appendix A of the ROD 2022-June

I-81 FDR, FEIS Comment Submissions

Find your comment and response from the FDR, FEIS.

I-81 FDR, FEIS Comment Submissions - A through C

I-81 FDR, FEIS Comment Submissions - D through K

I81 FDR FEIS Comment Submissions L through Nolan

I-81 FDR, FEIS Comment Submissions - NYCLU

I81 FDR FEIS Comment Submissions O through R

I81 FDR FEIS Comment Submissions S and T

I-81 FDR, FEIS Comment Submissions - U through Z

Final Environmental Impact Statement

Final Environmental Impact Statement

Coordination Plan 04-2022

Coordination Plan 04-2022

I-81 Viaduct Project Repositories

I-81 Viaduct Project Repositories

I-81 Public Hearings

After the release of the DEIS, the I-81 Project team held public hearings. Rewatch each event here.

Draft Environmental Impact Statement

The Draft Envirnmental Impact Statement can also be found at local repositories. Find a location near you.

Draft Environmental Impact Statement

Preliminary Draft Environmental Impact Statement

NYSDOT published the project’s preliminary Draft Design Report / Draft Environmental Impact Statement on April 19, 2019. This document examines the potential environmental effects of the project’s proposed alternatives.

pDEIS - Cover Page and Table of Contents

pDEIS - Executive Summary

pDEIS - 1 - Introduction

pDEIS - 2 - Project Setting

pDEIS - 3 - Alternatives

pDEIS - 4 - Construction Means and Methods

pDEIS - 5 - Transportation and Engineering Considerations

pDEIS - 6 - Social, Economic, and Environmental Considerations

pDEIS - 6.1 - Introduction

pDEIS - 6.2.1 - Neighborhood Character

pDEIS - 6.2.2 - Social Groups Benefited or Harmed

pDEIS - 6.2.3 - Environmental Justice

pDEIS - 6.3.1 - Land Acquisition, Displacement, and Relocation

pDEIS - 6.3.2 - Local and Regional Economies

pDEIS - 6.4.1 - Historic and Cultural Resources

pDEIS - 6.4.2 - Parklands and Recreational Resources

pDEIS - 6.4.3 - Visual Resources and Aesthetic Considerations

pDEIS - 6.4.4 - Air Quality

pDEIS - 6.4.5 - Energy and Climate Change

pDEIS - 6.4.6 - Noise

pDEIS - 6.4.7 - Water Resources

pDEIS - 6.4.8 - General Ecology and Wildlife Resources

pDEIS - 6.4.9 - Asbestos

pDEIS - 6.4.10 - Hazardous Waste and Contaminated Materials

pDEIS - 6.4.11 - Farmlands

pDEIS - 6.5 - Short-term Uses of the Environment Versus Long-Term Productivity

pDEIS - 6.6 - Irreversible and Irretrievable Commitment of Resources

pDEIS - 6.7 - Adverse Environmental Effects that Cannot Be Avoided or Adequately Mitigated

pDEIS - 7 - Draft Section 4(f) Evaluation

pDEIS - 8 - Summary of Alternatives

pDEIS - 9 - Agency Coordination and Public Outreach

pDEIS - 10 - Financing and Implementation

Appendix A-1-1: Viaduct Alternative - Highway Plans, Profiles and Typical Sections and Appendix A-1-2: Viaduct Alternative – Preliminary Structure Plans

Appendix A-1-3: Viaduct Alternative – Conceptual Construction Phasing and Maintenance and Protection of Traffic Plans

Appendix A-1-4: Community Grid Alternative – Highway Plans, Profiles and Typical Sections

Appendix A-1-5: Community Grid Alternative – NYSW Railroad Plans

Appendix A-1-6: Community Grid Alternative – Preliminary Structure Study Plans

Appendix A-1-7: Community Grid Alternative – Conceptual Construction Phasing and Maintenance of Protection of Traffic Plans

Appendix A-1-8: Conceptual Drainage Plans – Common to Both Alternatives

Appendix A-2 In Depth Bridge Inspection and Evaluation Reports

Appendix A-3-1: Non-Standard Features Table and Justification – Viaduct Alternative

Appendix A-3-2: Non-Conforming Feature Table and Justification – Viaduct Alternative

Appendix A-3-3: Non-Standard Feature Table and Justification – Community Grid Alternative

Appendix A-3-4: Non-Conforming Feature Table and Justification – Community Grid Alternative

Appendix A-4 Pavement Evaluation and Selection Report (PETSR)

Appendix A-5 Alternative Cost Estimates

Appendix A-6 Access Modification Report

Appendix A-6 Attachment 1

Appendix A-6 Attachment 2

Appendix B-1 Alternatives Evaluation Matrices

Appendix B-2 Tunnel Feasibility Study

Appendix B-3 Independent Tunnel Feasibility Study

Appendix B-3 - Independent Tunnel Feasibility Study Appendix A

Appendix B-3 - Independent Tunnel Feasibility Study Appendix B

Appendix B-3 - Independent Tunnel Feasibility Study Appendix C-D

Appendix B-3 - Independent Tunnel Feasibility Study Appendix E

Appendix B-3 - Independent Tunnel Feasibility Study Appendix F

Appendix B-3 - Independent Tunnel Feasibility Study Appendix G-H

Appendix B-3 - Independent Tunnel Feasibility Study Appendix I

Appendix B-3 - Independent Tunnel Feasibility Study Appendix J-K-L

Appendix B-3 - Independent Tunnel Feasibility Study Appendix M-N

Appendix B-4 Orange Tunnel Concept

Appendix C-1 Existing Traffic Control Devices

Appendix C-2 VISSIM Development and Calibration Report

Appendix C-3 Traffic Volumes and Level of Service

Appendix C-4 Crash Studies

Appendix C-5 Parking Study

Appendix C-6 Functional Classification for All Highways and Streets

Appendix D Conceptual Stage Relocation Plan

Appendix E-1 Area of Potential Effect

Appendix E-2-1 Architectural Resources Survey & Appendix A-B

Appendix E-2-1 Architectural Resources Survey Appendix C

Appendix E-2-1 Architectural Resources Survey Appendix D

Appendix E-2-1 Architectural Resources Survey Appendix E

Appendix E-2-1 Architectural Resources Survey Appendix F

Appendix E-3-1 Phase 1A Archeological Assessment Redacted

Appendix E-3-2 Phases 1A Appendix A

Appendix E-3-3 Phase 1A Appendix B

Appendix E-3-4 Phase 1A Appendix C

Appendix E-4 Appendix A Package

Appendix E-4 Appendix B Package

Appendix E-4 Appendix C Package

Appendix E-4 Appendix D Package

Appendix E-4 Appendix E Package

Appendix E-4 Appendix F Package

Appendix E-4 Draft Finding Document

Appendix E-5 Phase IB Archaeological Survey and Archaeological Monitoring

Appendix E-6 Draft Section 106 Memorandum of Agreement

Appendix E-7 Correspondence

Appendix E-4 Appendix F Package

Appendix F - Visual Impact Assessment Appendix A-B

Appendix F - Visual Impact Assessment Appendix C

Appendix F - Visual Impact Assessment Appendix D

Appendix G Air Quality

Appendix H – Noise Attachment A-C

Appendix H – Noise Attachment D-E

Appendix H – Noise Attachment F-G

Appendix H – Noise Attachment H-I

Appendix H – Noise Attachment J

Appendix H – Noise Attachment K-L

Appendix H – Noise Attachment M

Appendix H – Noise Attachment N-O

Appendix I - Water Resources

Appendix J-1General Ecology and Wildlife Resources Supplemental Methodology and Regulatory Framework

Appendix J-2 Ecological Communities and Vegetation

Appendix J-3 Wildlife Resources

Appendix J-4 NYSDEC Consultation

Appendix J-5 Endangered Species Act Section 7 Consultation

Appendix J-6 U.S. Fish and Wildlife Service Information for Planning and Consultation System (IPaC) Official Species Lists

Appendix J-7 References

Appendix K Asbestos Assessment

Appendix L Hazardous Materials – Section Nos. 1 to 4 and Figure Nos. 1 to 3

Appendix L Hazardous Materials – Attachments A. B, C, D and E are available at each of the Repositories

Appendix M - Agency Coordination and Public Involvement

Appendix N - Section 4(f)

Scoping Reports

I81 Scoping Report

I81 Scoping Report - Appendix A

I81 Scoping Report - Appendix B-1

I 81 Scoping Report - Appendix B-2

I81 Draft Scoping Report

Coordination Plan

This Coordination Plan for the Interstate 81 (I-81) Viaduct Project (“the Project”), located in the City of Syracuse, Onondaga County, New York, conforms to the requirements of the National Environmental Policy Act (NEPA) and specifically complies with the federal surface transportation law Moving Ahead for Progress in the 21st Century (MAP‐21) Act of 2012.


Section 6002 of the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) increased opportunities for the public and Federal, State, and local agencies to have active and early involvement in the NEPA process and to provide input on a project’s purpose and need, environmental study methodology, and alternatives under consideration. Section 6002 and 23 USC 139 require the development of a Coordination Plan for all highway and transit projects for which an Environmental Impact Statement (EIS) is being prepared under NEPA. Accordingly, the Federal Lead Agency (the Federal Highway Administration [FHWA]) and the Joint Lead Agency (the New York State Department of Transportation [NYSDOT]) have prepared this Coordination Plan to describe the process and communication methods followed to disseminate information about the Project, as well as to solicit and consider input from the public and other agencies.


This Coordination Plan has and will continue to be in effect throughout the environmental review process, beginning with the issuance of the Notice of Intent (NOI) to prepare an EIS for the Project and ending with the Record of Decision (ROD). The plan is a flexible, “living” document that can be amended as needed during the project environmental review process. Changes and updates to the plan will be documented in the “Revision History” section.