ABSTRACT
Freeway Park, like Yorkville Park, is primarily a roof garden over a transport route. It spans the Interstate 5 (I-5) highway as it passes directly east of downtown Seattle, the largest city in the Pacific Northwest of the United States. The I-5 runs from the US-Canadian border 110 miles (176 kilometres) north of Seattle to the US-Mexican border, more than 1,300 miles (2,000 kilometres) to the south. The park covers most of a 1,500 foot (460 metre) long, ten-lane wide stretch of the highway at its closest point to the downtown. The highway was constructed through Seattle between 1959 and 1965. The park is a prime example of the exploitation of air-rectos over a highway. It was built in three stages during the 1970s and 1980s. Two of these stages involved the construction of substantial buildings.
