What St. Louis monument built to honor the westward expansion of the U.S. is near a 1.25 oval race track?
Gateway Motorsports Park: Gateway Motorsports Park (formerly Gateway International Raceway) is a motorsport race track in Madison, Illinois, just east of St. Louis, Missouri, United States, close to the Gateway Arch. Gateway Motorsports Park:  It features a 1.25-mile (2 kilometer) oval used by the NASCAR Camping World Truck Series and IndyCar Series, a 1.5 mi infield road course used by SCCA and various car clubs, and quarter-mile drag strip that hosts an annual National Hot Rod Association event. Gateway Arch: The Gateway Arch is a 630 ft monument in St. Louis in the U.S. state of Missouri.
i don't know