Construction workers begin grading downtown for the Third Street Highway, known as the Interregional, in November 1952. This scene looks north from Third and Spruce streets. It was the first major highway project in St. Louis after World War II. When completed three years later, it ran only 2.3 miles from Washington Avenue at Eads Bridge, south to Gravois Avenue at 12th (now Tucker) Boulevard. By then, the state Highway Commission already was planning much bigger things. Barely a decade later, the Interregional became the path for Interstate 55 into downtown, but it gave relief to motorists trying to get in and out of downtown, and it gave them a taste for speedier superhighways. (Lester Linck/Post-Dispatch)
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Construction workers begin grading downtown for the Third Street Highway, known as the Interregional, in November 1952. This scene looks north from Third and Spruce streets. It was the first major highway project in St. Louis after World War II. When completed three years later, it ran only 2.3 miles from Washington Avenue at Eads Bridge, south to Gravois Avenue at 12th (now Tucker) Boulevard. By then, the state Highway Commission already was planning much bigger things. Barely a decade later, the Interregional became the path for Interstate 55 into downtown, but it gave relief to motorists trying to get in and out of downtown, and it gave them a taste for speedier superhighways. (Lester Linck/Post-Dispatch)

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