City of Portland Technical Manual

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Preamble The Technical Standards contained herein have been promulgated by the Department of Public Services and the Planning and Urban Development Department pursuant to Sections 14-498 and 14- 499 of the City of Portland’s Land Use Code following a public hearing of the Planning Board on May 11, 2010. The Technical Standards contained herein may be periodically updated and/or amended by the Planning Board pursuant to Section 14-506 of the City of Portland Land Use Code.
Table of Contents 1. Transportation Systems and Street Design Standards ................................................................. 1 1.1. TRAFFIC STUDIES ................................................................................................................................ 1 1.2. RESERVED ........................................................................................................................................... 2 1.3. HORIZONTAL ALIGNMENT OF STREETS .............................................................................................. 2 1.4. STREET GRADES .................................................................................................................................. 3 1.5. VERTICAL ALIGNMENT ....................................................................................................................... 3 1.6. SIGHT DISTANCE ................................................................................................................................. 4 1.7. DRIVEWAY DESIGN ............................................................................................................................. 5 1.8. SIDEWALKS AND DRIVEWAY APRONS ................................................................................................ 8 1.9. RESERVED ......................................................................................................................................... 10 1.10. SURFACE AND AGGREGATES .......................................................................................................... 10 1.11. STREETS ON ISLANDS IN CASCO BAY.............................................................................................. 13 1.12. PARKING STUDY ............................................................................................................................. 13 1.13. TRANSPORTATION DEMAND MANAGEMENT (TDM) .................................................................... 13 1.14. PARKING LOT AND PARKING SPACE DESIGN ................................................................................. 17 1.15. BICYCLE PARKING ........................................................................................................................... 17 1.16. BICYCLE ROUTES AND LANES ......................................................................................................... 19 1.17. RESERVED ....................................................................................................................................... 19 1.18. MOTORCYCLE / MOPED PARKING (ON-STREET) ............................................................................ 19 1.19. TRAFFIC SIGNALS ............................................................................................................................ 20 1.20. PUBLIC CROSSWALKS ..................................................................................................................... 21 1.21. PUBLIC TRANSIT FACILITIES ............................................................................................................ 26 1.22. CONSTRUCTION PERMITTING AND TRAFFIC CONTROL PLANS ...................................................... 27 1.23. INFRASTRUCTURE CONTRIBUTIONS .............................................................................................. 28 Section 1 Figures I-1 LOCAL STREET CROSS SECTION .......................................................................................................... 29 I-2 COLLECTOR STREET CROSS SECTION ................................................................................................. 30 I-3 ARTERIAL STREET CROSS SECTION ..................................................................................................... 31 I-4 UTILITY LOCATIONS IN STREETS ......................................................................................................... 32 I-5 TURNAROUND ON DEAD END STREET ............................................................................................... 33 I-6A PERPENDICULAR RAMP FOR WIDE SIDEWALK WITH NO ESPLANADE ............................................ 34 I-6B PARALLEL ADA RAMP LAYOUT FOR NARROW SIDEWALK WITH NO ESPLANADE ........................... 35 I-6C PERPENDICULAR RAMP FOR NARROW SIDEWALK WITH ESPLANADE ............................................ 36 I-6D DIAGONAL SIDEWALK RAMP LAYOUT FOR SIDEWALK WITH ESPLANADE ...................................... 37 I-6E PREFERRED SIDEWALK RAMP LOCATION AT INTERSECTION ........................................................... 38 I-7 SIDEWALK RAMP DETECTABLE WARNING PANEL ............................................................................. 39 I-7A SIDEWALK RAMP DETECTABLE WARNING PANEL (HISTORIC .......................................................... 40
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