U.S. Supreme Court Rules On Overton Park and I-40

In 1971, the U.S. Supreme Court ruled that the State of Tennessee could not go through Overton Park to build I-40 based on environmental issues. This east-west interstate now follows I-240 around the north side of Memphis. It remains the only incomplete section of I-40 identified in the June 29, 1956 Act that established the U.S. Interstate System.