COMPREHENSIVE TRANSPORTATION REVIEW NATIONAL CATHEDRAL SCHOOL WASHINGTON , DC August 21, 2018 Board of ZoningBoard Adjustment of Zoning Adjustment District of ColumbiaDistrict of Columbia CASE NO.18233A Case No. 18233A EXHIBIT NO.34A1 34A1 Prepared by: 1140 Connecticut Avenue NW 3914 Centreville Road 15125 Washington Street Suite 600 Suite 330 Suite 136 Washington, DC 20036 Chantilly, VA 20151 Haymarket, VA 20169 Tel: 202.296.8625 Tel: 703.787.9595 Tel: 703.787.9595 Fax: 202.785.1276 Fax: 703.787.9905 Fax: 703.787.9905 www.goroveslade.com This document, together with the concepts and designs presented herein, as an instrument of services, is intended for the specific purpose and client for which it was prepared. Reuse of and improper reliance on this document without written authorization by Gorove/Slade Associates, Inc., shall be without liability to Gorove/Slade Associates, Inc. Contents Executive Summary .................................................................................................................................................................................... 1 Introduction ............................................................................................................................................................................................... 3 Purpose of Study .................................................................................................................................................................................... 3 Contents of Study .................................................................................................................................................................................. 3 Study Area Overview ................................................................................................................................................................................. 6 Major Transportation Features .............................................................................................................................................................. 6 Future Projects ....................................................................................................................................................................................... 7 Project Design .......................................................................................................................................................................................... 11 Site Access and Circulation .................................................................................................................................................................. 12 Transportation Demand Management (TDM) ..................................................................................................................................... 13 Trip Generation ........................................................................................................................................................................................ 19 Transit ...................................................................................................................................................................................................... 21 Existing Transit Service ........................................................................................................................................................................ 21 Proposed Transit Service ..................................................................................................................................................................... 21 Site-Generated Transit Impacts ........................................................................................................................................................... 22 Pedestrian Facilities ................................................................................................................................................................................. 24 Pedestrian Study Area.......................................................................................................................................................................... 24 Pedestrian Infrastructure ..................................................................................................................................................................... 24 Site Generated Pedestrian Impacts ..................................................................................................................................................... 25 Bicycle Facilities ....................................................................................................................................................................................... 28 Existing Bicycle Facilities ...................................................................................................................................................................... 28 Proposed Bicycle Facilities ................................................................................................................................................................... 28 Site Impacts .......................................................................................................................................................................................... 29 Summary and Conclusions ....................................................................................................................................................................... 31 Figures Figure 1: Site Location ................................................................................................................................................................................ 4 Figure 2: Site Location (Aerial) ................................................................................................................................................................... 5 Figure 3: Major Regional Transportation Facilities .................................................................................................................................... 9 Figure 4: Major Local Transportation Facilities ........................................................................................................................................ 10 Figure 5: Site Plan .................................................................................................................................................................................... 15 Figure 6: Parking Map .............................................................................................................................................................................. 16 Figure 7: Student and Staff Vehicular Circulation .................................................................................................................................... 17 Figure 8: Student Drop-off/Pick-up Circulation ....................................................................................................................................... 18 Figure 9: Distribution Assignment ........................................................................................................................................................... 20 Figure 10: Existing Transit Facilities ......................................................................................................................................................... 23 Figure 11: Pedestrian Pathways ............................................................................................................................................................... 26 Figure 12: Existing Pedestrian Facilities ................................................................................................................................................... 27 Figure 13: Bicycle Study Area ................................................................................................................................................................... 30 Tables Table 1: Carshare Locations ....................................................................................................................................................................... 8 Table 2: NCS FTE and Student Approval Caps .......................................................................................................................................... 11 Table 3: Adjacent School Approval Caps .................................................................................................................................................. 13 Table 4: Estimated Trip Generation ......................................................................................................................................................... 19 Table 5: Estimated Net New Trip-Generation for Non-Auto Modes ....................................................................................................... 19 Table 6: Metrobus Route Information ..................................................................................................................................................... 22 Table 7: Sidewalk Requirements .............................................................................................................................................................. 24 “Close,” “Cathedral campus,” or “campus”). The Close is EXECUTIVE SUMMARY bounded by Woodley Road