Baltimore-Washington Parkway Widening Feasibility Study

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Baltimore-Washington Parkway Widening Feasibility StudyTable of Contents2.3.2 Criteria Overview .................................................................................................................. 252.3 Limiting Conditions ...................................................................................................................... 263.0 Alternatives Definition ..................................................................................................................... 273.1 Methodology ............................................................................................................................... 273.1.1 Background Information ....................................................................................................... 273.1.2 Potential Safety Issues and Roadway Deficiencies ................................................................. 273.1.3 Stakeholder Input.................................................................................................................. 283.2 Parkway Alternatives ................................................................................................................... 293.2.1 Screening Criteria .................................................................................................................. 303.2.2 Results of Preliminary Screening ........................................................................................... 303.3.3 Alternatives Selected for Further Study and Analysis ............................................................. 323.2 Widening Options ........................................................................................................................ 333.2.1 Outside Widening ................................................................................................................. 343.2.2 Inside Widening .................................................................................................................... 354.0 Public Involvement .......................................................................................................................... 374.1 Overview of the Context-Sensitive Solutions (CSS) Approach to the Feasibility Study ................... 374.2 Technical Advisory Committee (TAC)............................................................................................ 374.2.1 TAC Member Agencies .......................................................................................................... 374.2.2 TAC Meetings ........................................................................................................................ 384.3 Public Meetings ........................................................................................................................... 394.3.1 Overview of Public Meetings ................................................................................................. 394.4 Stakeholder Interviews ................................................................................................................ 414.5 Public Access to Study Information .............................................................................................. 414.5.1 Mailing List and Email Contacts ............................................................................................. 414.5.2 Newsletters ........................................................................................................................... 424.5.3 Public Meeting Advertisements ............................................................................................. 424.5.4 Webpage on the FHWA Web site .......................................................................................... 424.6 Major Issues or Concerns Emerging from Public Involvement....................................................... 425.0 Traffic and Transportation Impacts .................................................................................................. 435.1 Definition and Purpose ................................................................................................................ 43ii November 2012
Baltimore-Washington Parkway Widening Feasibility StudyTable of Contents5.2 Methodology ............................................................................................................................... 435.2.1 Limitations of the Transportation Analysis ............................................................................. 435.2.2 Travel Demand Modeling ...................................................................................................... 445.2.3 Constrained Long Range Plan Projects ................................................................................... 445.3 Alternatives Analysis .................................................................................................................... 455.3.1 Existing Conditions Scenario .................................................................................................. 455.3.2 2040 No-Build Scenario ......................................................................................................... 465.3.3 2040 Partial-Build Scenario ................................................................................................... 465.3.4 2040 Full-Build Scenario ........................................................................................................ 475.4 Analysis Results............................................................................................................................ 475.4.1 Traffic Volumes ..................................................................................................................... 475.4.2 Operations ............................................................................................................................ 496.0 Physical Constraints ......................................................................................................................... 546.1 Approaches to Widening .............................................................................................................. 546.2 Potential Impacts ......................................................................................................................... 546.3 Preliminary Costs ......................................................................................................................... 576.3.1 Capital Costs ......................................................................................................................... 576.3.2 Right of Way Costs ................................................................................................................ 596.3.3 Operations and Maintenance Costs ....................................................................................... 596.3.4 Construction Costs for Park Aesthetics .................................................................................. 597.0 Environmental Effects ...................................................................................................................... 607.1 Environmental Resources............................................................................................................. 607.1.2 Land Uses .............................................................................................................................. 607.1.3 Forest Areas .......................................................................................................................... 617.1.4 Natural Environmental Resources ......................................................................................... 617.1.5 Cultural and Historic Resources ............................................................................................. 627.1.6 Communities and Community Features ................................................................................. 637.1.7 Wetlands .............................................................................................................................. 637.2 Impacts ........................................................................................................................................ 637.2.1. Parklands and Recreation Areas Impacts .............................................................................. 64iii November 2012
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Baltimore-Washington Parkway Widening Feasibility Study

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