US-169/I-70 North Loop Planning & Environmental Linkages Study Refined Strategies Impact and Evaluation Report Draft – April 20, 2018 Table of Contents 1. Introduction and Overview ............................................................................................................................................ 1 1.1 Consistency with Purpose and Need ................................................................................................................... 4 1.2 Geographical Segments ........................................................................................................................................ 5 1.3 Initial Strategies Evaluation Summary ................................................................................................................. 8 1.4 Refined Strategies Evaluation ............................................................................................................................ 12 2. Area A: Missouri River Bridge and Interchange ......................................................................................................... 13 2.1 Constraints and Conditions ................................................................................................................................ 13 2.2 Conceptual Strategies ......................................................................................................................................... 16 Strategy A1 – Existing Alignment (No-Build) ............................................................................................................... 16 Strategy A2 – West Alignment ..................................................................................................................................... 17 Strategy A3 – Central Alignment .................................................................................................................................. 18 Strategy A4 – Adjacent Alignment ............................................................................................................................... 19 Interchange Strategy AB1 – Broadway Direct Connection ......................................................................................... 19 Interchange Strategy AB2 – Hybrid Interchange ........................................................................................................ 22 Interchange Strategy AB3 – I-35 Direct / 4th Street Interchange ............................................................................... 24 Interchange Strategy AB4 – I-35 Direct / 5th and 6th Street Interchange................................................................... 26 2.3 Level 2 Evaluation ............................................................................................................................................... 28 2.4 Level 2 Screening ................................................................................................................................................ 30 3. Area B: I-70 North Loop ............................................................................................................................................... 33 3.1 Constraints and Conditions ................................................................................................................................ 33 3.2 Conceptual Strategies ......................................................................................................................................... 34 Strategy B1 – Access Consolidation ............................................................................................................................. 34 Strategy B3-6a – Compressed Footprint (South) ........................................................................................................ 35 Strategy B3-6b – Compressed Footprint (North) ........................................................................................................ 37 Strategy B3-7 – Compressed Footprint (Center)......................................................................................................... 37 Strategy B7-1 – Remove and Reclassify ....................................................................................................................... 38 3.3 Level 2 Evaluation ............................................................................................................................................... 44 3.4 Level 2 Screening ................................................................................................................................................ 47 4. Area C: Wheeler Airport .............................................................................................................................................. 49 4.1 Constraints and Conditions ................................................................................................................................ 49 4.2 Conceptual Strategies ......................................................................................................................................... 50 Page | i Strategy C1 – Half Diamond Interchange with Existing NW Harlem Road Access .................................................... 50 Strategy C4 – Half Diamond Interchange with Split Lou Holland Undercrossing ...................................................... 51 Strategy C5 – Half Diamond Interchange with New Single Harlem Road Railroad Crossing .................................... 52 Auxiliary Improvement C-RIRO - Right-In/Right-Out ................................................................................................... 53 Auxiliary Improvement C-NI - North Interchange Improvements.............................................................................. 55 4.3 Level 2 Evaluation ............................................................................................................................................... 57 4.4 Level 2 Screening ................................................................................................................................................ 58 5. Area D: West Bottoms ................................................................................................................................................. 59 5.1 Constraints and Conditions ................................................................................................................................ 59 5.2 Conceptual Strategies ......................................................................................................................................... 61 Strategy D6: Mulberry Street to Forrester Road ......................................................................................................... 62 Strategy D7: Wyoming Street to Forrester Road ........................................................................................................ 63 Strategy D8: 4th Street Connector ............................................................................................................................... 64 5.3 Level 2 Evaluation ............................................................................................................................................... 64 5.4 Level 2 Screening ................................................................................................................................................ 66 6. Area E: Route 9 ............................................................................................................................................................ 66 6.1 Constraints and Conditions ................................................................................................................................ 66 6.2 Conceptual Strategies ......................................................................................................................................... 67 Strategy E2a – All At-Grade Connections, Existing MO-9 Alignment ......................................................................... 67 Strategy E2b – All At-Grade Connections, Western Offset of MO-9 Alignment ....................................................... 68 Strategy E3 – South At-Grade Connections ................................................................................................................. 69 Strategy E4 – South At-Grade Connections with Split Lanes ...................................................................................... 70 6.3 Level 2 Evaluation ............................................................................................................................................... 72 6.4 Level 2 Screening ................................................................................................................................................ 74 7. Transportation System Management .......................................................................................................................... 75 7.1 Strategy Definitions ............................................................................................................................................ 76 System Management .................................................................................................................................................... 76 Travel Demand .............................................................................................................................................................