In the 1970s, Arizonans resoundingly voted "NO" to completing Interstate 10 through downtown Phoenix.
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I-10 would be a ten-story tall freeway bridge through the north of downtown. But the "NO" vote canceled all new freeways, including finishing Interstate 10 coast to coast.
But then everything changed. By the 1990s, the state was rapidly building a Loop 101, Loop 202, Loop 303, etc. This is the story of how Phoenix built one of the biggest and best regional freeway systems – decades after other cities finished. But was it a good plan?
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Additional reading:
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The Salt River Pima-Maricopa Community:
https://www.srpmic-nsn.gov/
https://www.c-span.org/video/?420334-1/salt-river-pima-maricopa-indian-community
Regional transportation plan:
https://www.azmag.gov/Programs/Transportation/Regional-Transportation-Plan-RTP
Maricopa County sales tax case study:
http://www.transportation-finance.org/pdf/featured_documents/nchrp_20_24_62_maricopa.pdf
Arizona transportation by the numbers:
https://tripnet.org/wp-content/uploads/2020/03/Arizona_Transportation_by_the_Numbers_TRIP_Report_March_2020.pdf
Spacing between freeway interchanges:
https://www.fhwa.dot.gov/publications/research/safety/07031/index.cfm
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Time sections:
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Introduction: (0:00)
The Interstate Era: (2:37)
The Papago Vote (4:11)
A Second Boom: (6:37)
Embracing L.A.: (10:45)
Hitting the 1990s: (12:32)
Prop 400: (16:41)
A Good Idea?: (18:32)
The Third Boom: (23:24)