Grasspave2 was installed on both sides of a bituminous trail. Eight foot trails are not wide enough for emergency-access fire lanes. By incorporating Grasspave2 into […]Read more
Welcome to Invisible Structures, Inc.
For 35 years we have provided the finest in grass porous paving, gravel porous paving, underground stormwater storage, erosion control, drainage, and access mats. As we go into our 35th year, we will continue to provide you with the highest quality, environmental site development and stormwater management products available.