Interstate 480 is named for the first American to do what?
Interstate 480 (Ohio):  In 1998, the Governor of Ohio, George Voinovich, gave I-480 the additional name of the "Senator John Glenn Highway", in honor of the former NASA astronaut and a U.S. Senator from Ohio for 24 years. John Glenn:  In 1962 he became the first American to orbit the Earth, circling it three times.
orbit the Earth