How will the bridge and tunnel be constructed?
The Park will create a bridge over the freeway, consisting of concrete pre-stressed box beams set on columns constructed outside the current walls of the Freeway and supported by a new center wall. There will be approximately 1,200 linear feet of freeway enclosed by the deck forming a short tunnel. The concrete beams will be arranged in groups with spacing in between the groups. Concrete slabs will span the spaces connecting to the bottoms of the beams and forming trenches. The trenches will act like planter boxes, allowing the tree to grow to the desired size. A combination of lightweight fill and lightweight earth will cover the trenches and beams to provide the planting material for the landscaping of the park. The majority of the park will have a 12-inch layer of topsoil with the trenches providing the depth of soil needed for trees.
