High Quality Content by WIKIPEDIA articles! Interstate 475 (I-475) is an Interstate Highway in the US state of Michigan. I-475 is a 16.99-mile (27.34 km) bypass route that serves the downtown area of Flint while its parent, I-75, passes through the west side of the city. I-475 starts southwest of Grand Blanc and runs through through suburbs of Flint before passing through downtown. There it intersects I-69 and crosses the Flint River. The freeway turns westerly to connect back to I-75 north of Flint near Mount Morris.