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1-5:Aurora Donald Interchange(Exit 278) <br /> Interchange Area Management Plan for Marion County Approval <br /> ODOT KN19062 <br /> Oregon Department of Transportation—Region 2 <br /> TABLE OF CONTENTS (CONTINUED) <br /> 4-1 Aurora Donald Interchange Alternatives Selection Process 4-2 <br /> 4-2 TDI Concept 4-7 <br /> 4-3 CR-2 Concept 4-10 <br /> 4-4 CR-4 Concept 4-11 <br /> 4-5 DIR Concept 4-14 <br /> 4-6 FDR Concept 4-17 <br /> 4-7 FDS Concept 4-20 <br /> 4-8 DGR Concept 4-23 <br /> 4-9 SPI Concept 4-25 <br /> 4-10 DDI Concept 4-28 <br /> 4-11 SPI Concept Alternative 4-30 <br /> 4-12 SPI Concept Cross Sections 4-31 <br /> 4-13 DDI Concept Alternative 4-32 <br /> 4-14 DDI Concept Cross Sections 4-33 <br /> 5-1 Preferred Alternative Refinement and Phasing 5-1 <br /> 5-2 Preferred Alternative—June 2019 5-3 <br /> 5-3 Refined Preferred Alternative 5-5 <br /> 5-4 Refined Preferred Alternative Cross Section 5-6 <br /> 5-5 Phase 1 Improvements 5-10 <br /> 5-6 Phase 1 Alternative Cross Section 5-11 <br /> 5-7 Phase 1 Alternative—Expected intersection v/c and vehicle queue lengths for 2022 <br /> (opening day) and 2030 5-12 <br /> 5-8 Preferred Alternative—Phase 1 and Phase 2 Improvements 5-14 <br /> 5-9 Preferred Alternative Access Management Plan 5-15 <br /> 5-10 Phase 1 Access Management Plan 5-18 <br /> LIST OF TABLES <br /> 2-1 Demographic Summary 2-4 <br /> 2-2 Forecast Population 2-4 <br /> 2-3 Roadway Jurisdiction and Functional Classifications 2-5 <br /> 2-4 Nearest Access Points to East and West of Interchange 2-8 <br /> 3-1 Existing (2018) 30th Highest Hour Traffic Operations at Study Intersections 3-5 <br /> 3-2 Existing (2018) 30th Highest Hour Traffic Operations on 1-5 3-6 <br /> 3-3 Intersection Crash Ratesa (2012-2016) 3-8 <br /> 3-4 Future (2042) No-Build Design Hour Traffic Operations at Study Intersections 3-12 <br /> 3-5 Future (2042) No-Build Design Hour Traffic Operations on 1-5 3-13 <br /> 4-1 TDI Traffic Operation 4-5 <br /> iv July 2020 1274-3012-031 <br />