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LID opportunities in road-right-of-ways (view source)
Revision as of 14:17, 26 September 2017
, 6 years ago→Major arterial road
==Major arterial road==
==Major arterial road==
[[File:Major_Arterial_Cross_Section.png|thumb|text]]
Major Arterials are broad, four to six lanes, with an emphasis on speed, high volume vehicle flow and little on pedestrian or bicycle accommodation. Other characteristics include:
*Wide boulevards and large landscaped medians are common
*Due to higher travel speeds, maintaining clear zones and sight distances are critical
===Typical LID opportunities===
'''Within the roadway:'''
*Where possible, replace unnecessarily paved areas such as medians or traffic islands with pervious areas. If road grading allows, than these areas can be converted into treatment practices for surrounding impervious areas
*If the road is double crowned, then medians are an excellent place to treat arterial runoff with a simply landscaped bioretention or bioswales
*If road grades direct no runoff to the median, then reducing the median width and increasing the boulevard space would open more area for stormwater treatment along the side of the roads where the runoff drains
*Getting plants to survive may be difficult in narrow medians, consider decorative permeable paver solution over simply covering them with impervious asphalt or concrete
'''Within the boulevard:'''
*Bioretention planters are appropriate for high profile urban arterial roads, but they must be properly designed to handle flows from larger impervious areas and have easily cleaned pretreatment
==High density commercial road==
==High density commercial road==
Go back to [[Screening LID Options]]
Go back to [[Screening LID Options]]