FreightWaves Classics: Pennsylvania Turnpike was first superhighway in the US (Part 1)
The Pennsylvania Turnpike was the first "superhighway" in the U.S. Read its history in this FreightWaves Classics article.
Source: freightwaves.com
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The Pennsylvania Turnpike was the first "superhighway" in the U.S. Read its history in this FreightWaves Classics article.