Landscape Architect & Specifier News

JAN 2019

LASN is a photographically oriented, professional journal featuring topics of concern and state-of-the-art projects designed or influenced by registered Landscape Architects.

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Page 11 of 117

Continued on page 14 12 Landscape Architect and Specifier News h a rd s c a p e s Known affectionately to locals as simply "The Muny," the St. Louis Municipal Opera Theatre amphitheater in Forest Park, Saint Louis, Missouri is the nation's oldest and largest outdoor musical theater and has been underserved by the adjacent asphalt parking lot for 75 years. The venue produces multiple musical theater productions that receive 350,000 patrons every year during the hot and humid summer months in St. Louis. Replacement of this parking lot was long overdue, as cracking asphalt and potholes began to dominate the site and become quite an eyesore. DG2 Design, of Eureka, Mo., partnered with the Engineers at Horner & Shifrin to develop plans for renovation. The design team was contracted by the City of Saint Louis' Board of Public Service, the entity which oversees improvement projects within Forest Park. The project scope included a complete renovation of the parking lot, which must be able to serve the many visitors of the theater and park, while also providing a pleasant park atmosphere with a low- impact to the adjacent landscapes and waterways. Creating a Pleasant, Sustainable Space Completed in 2015, the new design for this festival and parking plaza changed the vast expanse of asphalt into a sustainable solution that utilizes bio-retention cells to control stormwater runoff on the large site. Strategic grading and curb cuts allow all the runoff from the impervious surfaces to be directed to three separate planted bio-retention cells that filter and slow stormwater runoff. The new concrete curbs along the bio-retention extend deep below the pavement layers to provide structure to the cells. Any sediment or pollutants now have time to infiltrate through this carefully selected soil matrix, which is 50" thick. Local stone was also used in the swales of the planting areas. Native perennials including sedges, rushes, grasses and wildflowers have created an extensive root system Landscape Architecture by DG2 Design // Engineers at Horner & Shifrin More Than Just a Parking Lot Above: DG2 Design and the Engineers at Horner & Shifrin collaborated to revamp the 11-acre parking lot, located in Missouri's Forest Park. Completed in 2015, the landscape included bio- retention cells, 9 sidewalk islands and various native plantings including trees, shrubs and perennials, to provide a sustainable and pedestrian-friendly space.

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