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Interstate 90 Corridor Landscape & Trail
Design, Mercer Island
In 1979, JGM was a
key member of the consultant team that created preliminary designs
for I-90 on Mercer Island . JGM developed the landscape concepts
for new park facilities to be constructed on 13 acres of lidded structures
over the freeway. The firm was responsible for pedestrian and bike
trail alignments, acoustical control, pedestrian circulation, concrete
finishes and configuration of planting areas. The community and trail
linkages were created to provide continuity of pedestrian movement
while minimizing the highway’s visual and acoustical impacts.
In 1985, the firm was retained as a prime consultant to prepare
the I-90 Landscape and Trail Corridor Master Plan for all of Mercer
Island . This effort involved inventory, analysis, value engineering,
as well as development of a plant palette, planting and irrigation
plans and a comprehensive landscape management plan. JGM worked
with the structural engineers in the design of the lids and contouring
of soil depths to accommodate tree plantings and lawn areas. JGM
was subsequently retained to complete the final design documents
for the 3.2-mile corridor.
JGM received a National ASLA Merit Award and National Merit Award
for Design in Transportation from the U.S. Department of Transportation
and a Presidential Design Achievement Award from the National Endowment
for the Arts.
David McNeal, FASLA, was the principal-in-charge and led the
design team. Ted Wall , ASLA, was the project manager.