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Final Environmental Impact Statement

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Final Environmental Impact Statement Jackson South Teton County Final Environmental Impact Statement Prepared for: Prepared by: August 2010 Jackson South Final Environmental Impact Statement Information Availability The following individuals may be contacted for further information regarding the proposed project and the Environmental Impact Statement. • Mr. Timothy Stark Wyoming Department of Transportation Environmental Services P.O. Box 1708 Cheyenne, Wyoming 82003-1708 Fax: 307-777-4193 E-mail: [email protected] • Mr. Lee Potter, P.E. Federal Highway Administration 2617 E. Lincoln Way, Suite D Cheyenne, Wyoming 82001-5662 Jackson South Final Environmental Impact Statement Table of Contents Page No. Executive Summary ..............................................................................................................................ES-1 ES1. Introduction................................................................................................................ES-1 ES2. Study Background......................................................................................................ES-1 ES3. Transportation Needs ................................................................................................ES-1 ES4. Alternatives.................................................................................................................ES-3 No-Action Alternative................................................................................................ES-3 Build Alternatives.......................................................................................................ES-4 ES5. Summary of Impacts ..................................................................................................ES-4 ES6. Summary of Mitigation............................................................................................ES-13 ES7. Identification of the Preferred Alternative .............................................................ES-13 ES8. Other Major Governmental Actions ......................................................................ES-22 ES9. Major Unresolved Issues.........................................................................................ES-22 Chapter 1.0: Study Background and Need for Action.........................................................................1-1 1.1 Introduction...................................................................................................................1-1 1.2 Corridor History............................................................................................................1-1 1.3 Study Background and Regional Setting.....................................................................1-4 1.4 Purpose and Need ........................................................................................................1-6 1.4.1 Improve System Linkage ..............................................................................1-7 1.4.2 Provide System Continuity ..........................................................................1-7 1.5 Accommodate Travel Demand....................................................................................1-8 1.5.1 Traffic Forecasts ............................................................................................1-8 1.5.2 Level of Service Analysis ...........................................................................1-11 1.6 Correct Roadway and Bridge Deficiencies...............................................................1-13 1.7 Improve Traffic Safety.................................................................................................1-21 1.8 Reduce Geologic Hazard Potential...........................................................................1-24 1.9 Accommodate Non-Motorized Transportation Modes ...........................................1-26 Chapter 2.0: Alternatives........................................................................................................................2-1 2.1 Introduction...................................................................................................................2-1 2.2 Alternatives Development and Screening Process ....................................................2-1 2.2.1 Develop Screening Criteria .........................................................................2-1 2.2.2 Develop Preliminary Alternatives ...............................................................2-3 2.2.3 Screen Preliminary Alternatives ..................................................................2-3 2.3 Preliminary Alternatives ...............................................................................................2-4 2.3.1 Initial Screening............................................................................................2-4 2.3.2 Secondary Screening....................................................................................2-9 2.4 Dismissed Alternatives ...............................................................................................2-12 TOC-i Jackson South Final Environmental Impact Statement 2.5 Advanced Alternatives................................................................................................2-13 2.5.1 Design Criteria............................................................................................2-14 2.6 Teton County Alternative...........................................................................................2-14 2.6.1 Analysis Results ..........................................................................................2-17 2.7 Preferred Alternative Identification ...........................................................................2-19 Chapter 3.0: Affected Environment.......................................................................................................3-1 3.1 Land Use and Zoning ...................................................................................................3-2 3.1.1 Existing Land Use .........................................................................................3-3 3.1.2 Existing Zoning .............................................................................................3-3 3.1.3 Land Trust and Preservation Areas..............................................................3-7 3.1.4 Future Land Use .........................................................................................3-10 3.1.5 Land Use Planning .....................................................................................3-10 3.2 Farmland......................................................................................................................3-15 3.3 Social Conditions........................................................................................................3-16 3.3.1 General Population Characteristics...........................................................3-16 3.3.2 Housing .......................................................................................................3-17 3.3.3 Community Facilities .................................................................................3-18 3.4 Environmental Justice.................................................................................................3-18 3.4.1 Minority Populations..................................................................................3-19 3.4.2 Low-Income Populations ...........................................................................3-20 3.4.3 Additional Data Sources ............................................................................3-22 3.4.4 Specialized Outreach.................................................................................3-22 3.5 Right-of-Way................................................................................................................3-23 3.6 Economic.....................................................................................................................3-23 3.6.1 Employment ................................................................................................3-23 3.6.2 Employment, Income, and Industry..........................................................3-24 3.6.3 Tourism........................................................................................................3-27 3.6.4 Commuting Trends.....................................................................................3-28 3.7 Parks and Recreation Resources................................................................................3-28 3.7.1 Parks ............................................................................................................3-29 3.7.2 Boating Activities........................................................................................3-29 3.8 Transportation .............................................................................................................3-31 3.8.1 Transportation Planning.............................................................................3-31 3.8.2 Existing Roadway and Traffic Conditions.................................................3-32 3.8.3 Future Roadway Conditions ......................................................................3-34 3.8.4 Design Speeds ............................................................................................3-35 3.8.5 Transit..........................................................................................................3-35 3.9 Bicyclist and Pedestrian Facilities .............................................................................3-37
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