STREET DESIGN MANUAL THE CITY OF SAN DIEGO Transportation & Storm Water Design Manuals Street Design Manual March 2017 Edition The City of San Diego | Volume 1: Right of Way Design Manuals | July 2016 Edition Part 1: Street Design Manual STREET DESIGN MANUAL THIS PAGE INTENTIONALLY LEFT BLANK FOR DOUBLE-SIDED PRINTING The City of San Diego | Street Design Manual | March 2017 Edition STREET DESIGN MANUAL Contents Contents ............................................................................................................................................................... i Figures ................................................................................................................................................................. v Tables ................................................................................................................................................................. vii List of Acronyms .............................................................................................................................................. viii Introduction ....................................................................................................................................................... ix Applicability ......................................................................................................................................................... x How to Use This Manual ................................................................................................................................... xi 1. Roadway & Alley Design ......................................................................................................................... 1-1 Roadways ........................................................................................................................................... 1-1 Alleys .................................................................................................................................................. 1-2 Residential Streets ....................................................................................................................... 1-31-4 Cul-De-Sac ................................................................................................................................... 1-4 Low-Volume Residential Local Street ...................................................................................... 1-6 Residential Local Street............................................................................................................. 1-8 Commercial Streets ........................................................................................................................ 1-10 Commercial Local Street ......................................................................................................... 1-10 Industrial Local Street ............................................................................................................. 1-14 Collector Streets .............................................................................................................................. 1-16 TwoLane Sub-Collector ........................................................................................................... 1-16 TwoLane Collector ................................................................................................................... 1-18 TwoLane Collector with TwoWay LeftTurn Lane ................................................................. 1-20 TwoLane Industrial Collector ................................................................................................. 1-22 FourLane Urban Collector with TwoWay LeftTurn Lane .................................................... 1-24 Major Streets ................................................................................................................................... 1-26 Four-Lane Urban Major .......................................................................................................... 1-26 Four-Lane Major ...................................................................................................................... 1-28 Six-Lane Urban Major ............................................................................................................. 1-30 Six-Lane Primary Arterial ........................................................................................................ 1-32 Rural Roads ..................................................................................................................................... 1-34 Rural Local Road ...................................................................................................................... 1-34 Rural Collector Road ................................................................................................................ 1-36 Facilities without the Automobile ................................................................................................. 1-38 Shared Pedestrian/Bikeway Facilities ................................................................................... 1-38 Bikeways ................................................................................................................................... 1-40 Transitways ............................................................................................................................... 1-40 2. Pedestrian and Accessibility Design ...................................................................................................... 2-1 Understanding ADA and Designing for Various Disabilities and Ages ...................................... 2-2 Grades ......................................................................................................................................... 2-2 Sidewalks .................................................................................................................................... 2-3 Curb Ramps at Intersections .................................................................................................... 2-4 Surfaces ...................................................................................................................................... 2-5 Creating a Pedestrian Realm ........................................................................................................... 2-5 Sidewalk Design ......................................................................................................................... 2-6 Issues to Consider ..................................................................................................................... 2-6 New Development versus Retrofit .......................................................................................... 2-6 i The City of San Diego | Street Design Manual | March 2017 Edition STREET DESIGN MANUAL Relation to Transit ..................................................................................................................... 2-6 Establishing “Zones” .................................................................................................................. 2-7 Street Design ..................................................................................................................................... 2-9 Issues to Consider ..................................................................................................................... 2-9 ADA Accessibility ........................................................................................................................ 2-9 New Development versus Retrofit .......................................................................................... 2-9 Relation to Transit ................................................................................................................... 2-10 Guidelines ................................................................................................................................. 2-10 Intersection Design and Operations ............................................................................................ 2-10 Issues to Consider ................................................................................................................... 2-11 ADA Accessibility ...................................................................................................................... 2-11 New Development versus Retrofit ........................................................................................ 2-11 Relation to Transit ................................................................................................................... 2-11 Pedestrian Crossings ...................................................................................................................... 2-11 Issues to Consider ................................................................................................................... 2-11 Accessibility .............................................................................................................................. 2-12 Relation to Transit ................................................................................................................... 2-12 Guidelines ................................................................................................................................. 2-12 Residential Street Crossings ..................................................................................................