Interstate 110 (I-110) is a freeway spur route in Biloxi, Mississippi, running south from I-10 to U.S. Highway 90 (US 90). It is one of very few places on the Interstate Highway System utilizing a drawbridge. The southbound control city is Biloxi, with a series of bridges out over the Gulf of Mexico at the southern terminus. There is no northbound control city; the road is marked with trailblazers reading "TO I-10" instead. It ran entirely concurrently with Mississippi Highway 15 (MS 15), until MS 15 was truncated to I-10.