VERSION 2.1 MAY 20, 2020 ROADSIDE DEVELOPMENT MANUAL: GUIDELINES FOR PLANNING, DESIGN, CONSTRUCTION AND MAINTENANCE FOR LANDSCAPE, HARDSCAPE AND VISUAL RESOURCES Highway Division, Technical Services Branch, Geo-Environmental Section OREGON DEPARTMENT OF TRANSPORTATION Page 1 of 198 Guidelines for Planning, Design, Construction and Maintenance for Landscape, Hardscape and Visual Resources ODOT is an EEO/AA Employer. This information can be made available in an alternative format by contacting the Geo- Environmental Section at 503-986-3252 or at [email protected] ODOT does not discriminate on the basis of disability in admission or access to our programs, services, activities, hiring and employment practices. Questions: 1-877-336-6368 (EEO-ODOT) or through Oregon Relay Services at 7-1-1. Page 2 of 198 Guidelines for Planning, Design, Construction and Maintenance for Landscape, Hardscape and Visual Resources TABLE OF CONTENTS Guidelines for Planning, Design, Construction and Maintenance for Landscape, Hardscape and Visual Resources ........................................................................................................................................ 1 TABLE OF CONTENTS ........................................................................................................................................ 3 Summary Of Changes ............................................................................................................................... 8 1. Introduction ........................................................................................................................................ 9 Purpose .................................................................................................................................................... 9 Organization Of Manual ....................................................................................................................... 9 Roles And Responsibilities ................................................................................................................... 9 Points Of Contact ................................................................................................................................. 10 Manual Revision Process .................................................................................................................... 10 Overview ............................................................................................................................................... 11 Key Definitions ..................................................................................................................................... 13 History of Roadside Development and Landscape Aesthetics in Oregon ................................... 14 Section Summary ................................................................................................................................. 16 2. Roadside Development Principles and Considerations ............................................................. 17 Section Summary ................................................................................................................................. 18 3. Regulatory Context .......................................................................................................................... 19 Federal ................................................................................................................................................... 19 State ........................................................................................................................................................ 20 Oregon Department of Transportation ............................................................................................. 21 Local ....................................................................................................................................................... 22 Section Summary ................................................................................................................................. 22 4. Planning ............................................................................................................................................. 23 Eco-Logical Planning ........................................................................................................................... 23 Corridor Planning ................................................................................................................................ 23 Section Summary ................................................................................................................................. 24 5. Project Development Process ......................................................................................................... 25 Project Development Teams ............................................................................................................... 25 Project Planning .................................................................................................................................... 25 Visual Resource Inventory and Analysis .......................................................................................... 27 Page 3 of 198 Guidelines for Planning, Design, Construction and Maintenance for Landscape, Hardscape and Visual Resources Section Summary ................................................................................................................................. 28 Design Context ..................................................................................................................................... 29 Context Sensitive And Sustainable Solutions (Cs3) ........................................................................ 29 Complete Streets .................................................................................................................................. 29 Practical Design .................................................................................................................................... 29 Crime Prevention through Environmental Design ......................................................................... 30 Section Summary ................................................................................................................................. 30 6. Design Principles and Products – guidance on design ............................................................... 31 SAFETY ................................................................................................................................................. 31 Delineation ............................................................................................................................................ 31 Hydraulics ............................................................................................................................................. 31 Snow....................................................................................................................................................... 32 Context (CS3) ........................................................................................................................................ 32 Conserve the Best, Enhance the Rest ................................................................................................. 32 Rural and Urban Differences .............................................................................................................. 32 Water Use .............................................................................................................................................. 33 Native versus Horticultural Plants .................................................................................................... 34 Phytoremediation and Water Quality (WQ) .................................................................................... 35 Specific Design Issues Regarding Roadside Plantings ................................................................... 35 Subsection Summary ........................................................................................................................... 36 Roadside Design Documents ................................................................................................................. 37 Temporary and Permanent Erosion and Sediment Control (ESC) Designs................................. 37 Site Restoration Designs ...................................................................................................................... 38 Environmental Mitigation Designs ................................................................................................... 39 Visual Resource Designs ..................................................................................................................... 45 Aesthetic Planting Designs ................................................................................................................. 45 Subsection Summary ........................................................................................................................... 46 7. Landscape Planting Design ............................................................................................................ 47 General Design Considerations ......................................................................................................... 47 Contour Grading .................................................................................................................................