With the increase of autos in the 1950s, the demand for good quality roads increased. The federal government passed the Interstate Highway Act, 1956, pumping $1 billion a year into the construction of roads. By 1960, $2.9 billion was being used a year. The construction encouraged urban sprawl, as more people could now live in the suburbs and drive the freeways into the cities for work. But it also marked the beginning of the end to the city as a livable location. The middle class left the city to live in the suburbs, urban neighborhoods were split into isolated residential islands walled off from each other by concrete abutments of the freeways. Cars clogged the roads and parking spaces of every major city. Noise and pollution increased in cities and the middle class tax base caused a decay in the necessary city services. Crime increased. Schools were neglected. Health care could not afford to keep up its services. By the 1960s, major department stores and light industries left the cities and relocated in shopping malls and centers in the suburbs, taking jobs with them and further decreasing the tax base for the city.
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the construction of the interstate highway system
Increased suburbanization is the development that resulted from the construction of the interstate highway system.
The longest Interstate Highway is I-90, running from Boston MA to Seatle WA with about 3100 miles.. The second longest Interstate highway is I-80, running from San Francisco CA to New York NY with about 2900 miles.
June 29th, 1956
The last interstate highway was completed in 1993 in Los Angeles. The Century Freeway, Interstate 105, was completed after 37 years of construction. The route connects Los Angeles International Airport with Interstates 405, 110, 710, and 605.