Supporting Technical Reports



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The Technical Reports present on this webpage were current on the date they were published and form the foundation for the development of the Draft Supplemental Environmental Impact Statement (DSEIS). In some cases, however, there have been slight realignments to some of the alternatives to avoid or minimize impacts. Also, some of the information has changed since the reports were published due to the passage of time. The most up-to-date information is published in the DSEIS.

 

Engineering Technical Studies

Alternatives Development

Scoping

Environmental Technical Studies

Other Published Documents

Engineering Technical Studies  TO TOP
Preliminary Engineering (PER)  TO TOP

June 2014

Preliminary Engineering Report- 765 kb
Summarizes the preliminary design for the project alternatives: Cooper Creek, G South, Juneau Creek, and Juneau Creek Variant.

PER Appendix A - Build Alternative Plan Sets  TO TOP

June 2014

PER Appendix B - Cost Estimate Summary Sheets   TO TOP

June 2014

PER Appendix C - Traffic Engineering  TO TOP

February 2014

2014 Traffic Study Update- 3.8
Appendix C of the Preliminary Engineering Report, estimates future traffic demand; evaluates the performance of intersections and highway segments.

PER Appendix D - Bridge Engineering  TO TOP

August 2011

Preliminary Bridge Structures Technical Report - 1.6 Mb
Appendix D of the Preliminary Engineering Report, evaluates feasibility of bridge crossing types and construction techniques and presents cost estimates.

PER Appendix E - Conceptual Stage Relocation Report  TO TOP

February 2014

Updated Conceptual Stage Relocation Study- 1.2 Mb
Identifies properties that may be acquired for construction of the SEIS build alternatives and properties for which relocation of residents or businesses likely would be required.

PER Appendix F - Geotechnical Evaluations  TO TOP

April 2016

Assessment of Deep Cut Section, Cooper Creek Alternative- 4.7 Mb
Provides a geotechnical assessment of the Cooper Creek Alternative including recommendations for deep cuts.

February 2014

Geotechnical Reconnaissance Report - 9.4Mb
Reports results of a drilling program in soils along a portion of the Cooper Creek Alternative.

May 2005

Geotechnical Reconnaissance Report – Preliminary Rock Stability Investigation - 11.6 Mb
Examines at a reconnaissance-study level, the most feasible location (geotechnically) for a large bridge crossing the lower or middle portions of the Juneau Creek Canyon.

January 2001

Preliminary Geotechnical Memo, Cooper Creek Alternative (PER Appendix F)- 1.9 Mb
Summarizes the preliminary geotechnical reconnaissance trip conducted along the proposed Cooper Creek Alternative.

Hydrology  TO TOP

August 2011

Hydrology and Hydraulics Update for Juneau Creek Variant - 2.7 Mb
Provides supplement to the 2006 study of hydrology and hydraulics for identified streams and drainages intersecting the Juneau Creek Variant Alternative. Provides preliminary guidance on conveyance structures.

March 2006

Hydrology and Hydraulics Study - 1.5 Mb
Provides a technical study of hydrology and hydraulics for identified streams and drainages intersecting the three build alternative alignments (Cooper Creek, G South, and Juneau Creek). Provides preliminary guidance on conveyance structures.

Hydrology and Hydraulics Study Figures:

Environmental Technical Studies  TO TOP
Fish  TO TOP

February 2013

Essential Fish Habitat Assessment - 1.5 Mb
Provides an assessment of the essential fish habitat (EFH) that may be affected by the project, analyzes f potential effects on EFH, and presents proposed conservation measures.

March 2011

Fisheries Evaluation - 288 kb
Summarizes fisheries field data collection. Identifies the species of fish that reside in streams crossed by the project alternatives, as wells as streams with high probabilities of fish use seasonally or year-round.

Fisheries Evaluation Figures:

Recreation  TO TOP

January 2013

Recreation Analysis - 4.6 Mb
Analyzes recreational resources and users that may be affected by the Cooper Creek, G South, Juneau Creek, and Juneau Creek Variant alternatives.

Visual Impacts  TO TOP

October 2012

Visual Analysis - 465 kb
Identifies potential impacts introduced by project alternatives (Cooper Creek, G South, Juneau Creek, and Juneau Creek Variant) to existing visual resources. Consideration is given to the how potential impacts would affect viewers at locations within and outside of the project area.

Appendices:

Noise  TO TOP

January 2014

Highway Traffic Noise Assessment Summary - 3.4 Mb
Evaluates the potential for traffic noise impacts and suggests noise mitigation options in accordance with the AK DOT&PF Noise Abatement Policy.

Highway Traffic Noise Assessment Figures - 3.4 Mb

Floodplains  TO TOP

February 2014

Location Hydraulic Study - 13.1 Mb
Determines if and where the four build alternatives may encroach into the mapped 100-year or base floodplain and associated floodways. The study also compares the encroachments of the alternatives with those of the existing roadway (the No Build Alternative).

Relocation Impacts  TO TOP

February 2014

Updated Conceptual Stage Relocation Study - 1.7 Mb
Identifies properties that may be acquired for construction of the SEIS build alternatives and properties for which relocation of residents or businesses likely would be required. (Note: this is the same as Appendix E of the Preliminary Engineering Report)

Wetlands  TO TOP

March 2010

Wetland Preliminary Jurisdictional Determination - 5.2 Mb
Report presents wetland determination methods and wetland determination results (21 pages)

Appendix A:  Wetland Determination Forms and Site Photography:

March 2010

Wetland Functional Assessment - 389 kb
Describes the extent and types of project area wetlands, identifies functions and values of the wetlands, and compares the wetland impacts (in terms of acres) of the alternatives under consideration (Cooper Creek, G South, and Juneau Creek).

Figures of Wetland Functional Assessment:

Vegetation  TO TOP

October 2006

Biological Evaluation for Plants -132 kb
Analyzes possible effects of project activities on threatened, endangered, proposed threatened or endangered, and sensitive plants located on USFS lands.

Appendices:

February 2005

Vegetation Mapping- 392 kb
Identifies the locations of various types of vegetation within the project area. Provides basis for determining potential direct and construction-related impacts from the project alternatives to vegetation types and wildlife.

Vegetation Mapping Figures:

Subsistence  TO TOP

February 2014

ANILCA Section 810 Subsistence Evaluation - 1 Mb
Evaluates potential affect to subsistence activities which could result from implementation of the reasonable alternatives.

Section 4(f) Properties  TO TOP

May 2002

Preliminary Identification of Section 4(f) Properties - 1.3 Mb
Presents a preliminary identification of potential Section 4(f) properties in the Sterling Highway milepost (MP) 45-60 corridor.

Avalanche Hazards  TO TOP

April 2001

Avalanche Hazard Evaluation - 2.3 Mb
Identifies and maps snow avalanche hazard areas that would potentially affect the existing alignment and the following alternatives: Juneau Creek, Juneau Creek Wilderness Variant, Juneau Creek Forest Variant, Cooper Creek Alternative, Kenai River Alternative, and the Cooper Creek West Extension.

Appendix:

Traffic and Safety Studies  TO TOP

February 2014

Traffic Crash Analysis - 1.7 Mb
Analyzes Alaska Department of Transportation and Public Facilities (AK DOT&PF) crash data from 2000 through 2009 to identify areas along the existing alignment that experience higher crash rates and discuss trends.

August 2011

Shadow Analysis - 138 kb
Study that determined sun and shadow conditions for the roadway surface of each alternative (Cooper Creek, G South, Juneau Creek, and Juneau Creek Variant).

February 2008

Severity of Accidents on the Existing Sterling Highway - 246 kb
Identifies and analyzes highway safety issues using criteria that establish relative severity of accident locations.

March 2006

Accident Analysis - 157 kb
Analyzes AK DOT&PF crash data from 1995 through 2004 to delineate important trends in accidents along the corridor.

July 2003

Emergency Response Assessment and Hazardous Materials Spill Control- 234 kb
Investigates potential spill risk and the emergency response capabilities for the region for each of the considered alternatives. Also used to support alternatives screening decisions.

September 2001

Origin-Destination Study - 11.4 Mb
Discusses patterns of vehicle movements through the study area based on a video-based license plate survey.

Wildlife Study Plan  TO TOP

July 2013

Wildlife Study Plan - 819 kb
Provides a detailed plan as agreed to by project sponsors and wildlife management agencies for modeling and monitoring wildlife movements in the project area, in order to evaluate the need for and location(s) of wildlife crossing structures.

Scoping  TO TOP
Scoping Summary Report  TO TOP

October 2006

Scoping Summary Report - 500 kb
Scoping is a preliminary stage in the development of the environmental documentation process. This Scoping Summary Report documents the results of the early phases of public and agency scoping activities conducted from July 2000 through July 2003.

Appendices:

Alternatives Development  TO TOP
Alternatives Development and Screening to Identify Reasonable Alternatives  TO TOP

August 2014

Alternatives Map- 836 kb
Map depicting locations of reasonable alternatives (No Build, Cooper Creek, G South, Juneau Creek, and Juneau Creek Variant).

November 2013

Existing Alignment Report- 1 Mb
Report summarizes reasons why the project cannot be rebuilt entirely on its existing alignment.

September 2012

Evaluation of Juneau Creek Alternative Variants- 4.5 Mb
Determines whether any of three variants of the Juneau Creek Alternative is reasonable and should be further evaluated in the Draft SEIS.

June 2003

Soil Nail Walls – Kenai River Wall Alternative- 237 kb
Evaluates feasibility of the Soil Nail Wall concept for use in the Kenai River Wall Alternative.

September 2003

Recommendations from Evaluation Criteria and Alternatives Analysis- 107 kb
Establishes basis and determines which alternatives are reasonable. Ten build alternatives and the No Build Alternative are analyzed to determine which should be advanced for further evaluation.

May 2003

Evaluation Criteria and Alternatives Analysis- 338 kb
Provides the rationale for determining which alternatives are reasonable and which should be eliminated from further evaluation in the SDEIS. Eight proposed reasonable build alternatives are assessed.

Supporting Tables and Figures:

Appendices:

October 2001

Technical Design Memorandum-Preliminary Engineering Summary of 9 Alternatives- 1.2 Mb
Summarizes the preliminary designs of nine alternatives considered in 2001: The Kenai River Alternative; the Kenai River Alternative, Walls Variant; the Juneau Creek Alternative; the Juneau Creek Alternative, Forest Variant; the Juneau Creek Alternative, Wilderness Variant; the Juneau Creek Alternative, F Variant; the G Alternative; the G Alternative, North Variant; and the Cooper Creek Alternative.

Other Published Documents  TO TOP
Past EISs, Section 4(f) Evaluations, Geotechnical Reports  TO TOP

January 2016

Facts Sheet

January 2016

Project Overview

1994

Draft Environmental Impact Statement and Section 4(f) Evaluation- 4.7 Mb
This is a draft of EIS and Section 4(f) Statement covering mileposts 37-60 of the Sterling Highway but which expedited the evaluation of mileposts 37-45.

August 1989

Reconnaissance Engineering Geology Report, Sterling Highway MP 37-60- 11 Mb
Assesses baseline terrain, access, and geological conditions within the study area.

April 1983

Geotechnical Report for Proposed Cuts: Station 1668+00 & Station 1702+00 to 1712+00- 3.9 Mb
Discusses issues identified for the proposed cuts at Station 1668+00 and between Station 1702+00 and 1712+00 on the existing Sterling Highway.

1982

Draft Environmental Impact Statement and Section 4(f) Evaluation
This is a draft of EIS and Section 4(f) Statement covering mileposts 37-60 of the Sterling Highway

DEIS Sections:

Newspaper Articles and other Media  TO TOP

 

Alaska DOT Considers Bypass of Cooper Landing - Seward City News, 4/24/15

DOT unveils options for $250M-plus Cooper Landing Bypass - Homer News, 4/8/15

DOT unveils options for Cooper Landing Bypass - splitspeedlimitskill.org, 4/3/15

Transportation Department seeks comment on Sterling Highway project to bypass Cooper Landing - Daily Journal, 4/2/15

Comment sought on highway project bypassing Cooper Landing - Seattle Post, 4/2/15

DOT seeks comment on Sterling Highway, Cooper Landing bypass plan - KTVA Channel 11, 4/2/15

Comment sought on highway project bypassing Cooper Landing - wn.com, 4/2/15

DOT unveils options for $250M-plus Cooper Landing Bypass - Alaska Journal of Commerce, 4/1/15

DOT Unveils Options for Cooper Landing Bypass - Peninsula Clarion, 4/1/15

Cooper Landing Bypass Draft Open for Public Comment - AudioKSRM Radio Kenai, 4/1/15, audio

Public Comment Sought For Cooper Landing Bypass - Alaska News Feed, April 1, 2015

Public Comment Sought For Cooper Landing Bypass - AudioAPRN, 3/31/15, audio

Public Comment Sought For Cooper Landing Bypass - AudioAlaska News Nightly, 3/31/15, audio

ADOT&PF releases Sterling Highway Draft Supplemental EIS today - AASHTO Journal, 3/27/15

ADOT&PF releases Sterling Highway Draft Supplemental EIS today - Alaska Business Monthly, 3/27/14

Bypass Project in Cooper Landing is Closer to Reality - KBBI Radio Homer

Time to Move Some Dirt in Cooper Landing - Peninsula Clarion, 9/20/12

Work Moving Forward on Cooper Landing Bypass - Peninsula Clarion, 9/17/12

Not doing anything not an option for highway project - Peninsula Clarion, 11/2/03

Cooper Landing Highway Options Still Under Review - Peninsula Clarion, 6/9/02

Cooper Landing Divided Over Highway Plans - ADN, 11/19/01

Plan for Highway Stirs Emotions - ADN, 6/11/01

Public Weighs in on Alternatives... - Peninsula Clarion, 3/30/01

State Moves Toward upgrade... - Peninsula Clarion, 3/29/01

Highway Fixes Imminent - ADN, 3/28/01

Planners Explore Highway Option - Peninsula Clarion, 3/27/01