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3. LANDSCAPE GUIDELINES GENERAL GUIDELINES " The following guidelines are general design princi- ples fo be applied corridor-wide on all highway right of way. t'hCit\W^Y . 1-25 motorists viewing Ihe landscape are given hlghesl prlorhy. Landscapes viewed only from oil slle can be developed 10 reflect oil-site character. These concepls should be devel- oped whh Ihe adjacenl nelghborhoode or busi- nesses. Roadsides visible from 1-25 should be landscaped following the landscape approach Indlcaled In thIs report. . Graduate heights 01 plant malerlal with distance away from the primary viewer to .open up. the roadway space. . Areas should nol be planted Ihal are obscured from view by walls. slopes or other plants. To Insure landscape treatments are visible, check sight lines 'rom the roadway be'ore design. Again. 'or landscaping out of Ihe 1-25 motorists view, the landscape architect should consider neighbor- hood character and viewa. . In those areas where there Is no guardrail 10 keep traffic off of landscaped areas, creallve design should be used to provide either a v1su a' and/or physical barrIer 10-15 feet from the roadway (allowing an ample clear zone for vehI- cles 10 pull oil) to prevent landscape deslruc- lion. Examples 0' 'barriers' are raised berms covered with plant meterial, hardscape com- bined whh a raised berm, elc. . Along Interstate segmenls use large masses 0' only a ,..w specl..s; res..rv.. small groups and mor.. detailed plantings where ramps join arterl. als and travel speeds are reduced. . Landscape loliage should show contrasting 1Xl1. or and/or textur... . Punctuate larg.. masses 01 tr....s. shrubs or groundlXlvers whh appropriate accent plants or wildt/owers. 12.