Transportation Uses of LID

Hold the mouse cursor over any colored part of the image to identify the LID technique that is being used in this setting.  Click on this same area to go directly to the relevant design page.

Bioretention; Transportation Bioretention (Grading); Transportation Bioretention (Grading); Transportation Bioretention (Grading); Transportation Bioretention; Transportation Bioretention; Transportation Permeable Pavers; Transportation Permeable Pavers (Interlocking Concrete); Transportation Permeable Pavers (Concrete Only Under Wheels); Transportation Permeable Pavers (On-Street Parking); Transportation Grassed Swale (Culvert Under Intersection); Transportation Grassed Swale; Transportation Disconnectivity; Transportation Grassed Swale; Transportation Grassed Swale; Transportation Grassed Swale (First Catch Basin Outputs to Swale); Transportation Grassed Swale (Overflow Connection to Storm Drain System); Transportation Grassed Swale, Transportation Minimizing Imperviousness (Reduced Street Width); Transportation Grassed Swale (Pretreatment Gravel shoulder); Transportation Click on a Colored Area to View Specific Techniques For Transportation Uses of LID

All sketches adapted from Prince George's County, MD, LID IMP Guidance Document, 2002.

Legend:
A
  1. Bioretention (Grading), Transportation
  2. Bioretention, Transportation
B
  1. Permeable Pavers (Interlocking concrete), Transportation
C
  1. Permeable Pavers (Concrete only under wheels), Transportation
D
  1. Grassed Swale, Transportation
  2. Permeable Pavers, Transportation
  3. Grassed Swale (Calvert under intersection), Transportation
  4. Grassed Swale (Pretreatment gravel shoulder), Transportation
  5. Disconnectivity, Transportation
E
  1. Grassed Swale, Transportation
  2. Permeable Pavers (On-street parking), Transportation
  3. Minimizing Imperviousness (Reduced street width), Transportation
  4. Bioretention, Transportation
F
  1. Grassed Swale, Transportation
  2. Grassed Swale (First catch basin outputs to swale), Transportation
  3. Grassed Swale (Overflow connection to storm drain system), Transportation

Suggestions:

  • Build narrower residential streets or restrict parking and sidewalk areas to one side of the road rather than both. Replace the space gained with pervious areas, bioretention facilities, or vegetated channels.
  • Use a linear bioretention cell in the highway median to treat runoff.
  • Disconnect sidewalks by relocating them away from the roadway or directing their runoff into an open drainage system that leads to an infiltration practice.
  • Use permeable pavers for emergency stopping areas, crosswalks, sidewalks, road shoulders, on-street parking areas, vehicle crossovers and low-traffic roads.

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