<Li> US 91, Great Falls, Montana, to south of Las Vegas, Nevada </Li> <Li> US 101, Port Angeles, Washington, to San Diego, California: Pacific Highway </Li> <Ul> <Li> US 2, Houlton, Maine, to Bonners Ferry, Idaho </Li> <Li> US 10, Detroit, Michigan, to Seattle, Washington: National Parks Highway </Li> <Li> US 20, Boston, Massachusetts, to Newport, Oregon </Li> <Li> US 30, Atlantic City, New Jersey, to Astoria, Oregon: Lincoln Highway </Li> <Li> US 40, Atlantic City, New Jersey, to San Francisco, California: Victory Highway </Li> <Li> US 50, Annapolis, Maryland, to Wadsworth, Nevada (where it met US 40) </Li> <Li> US 60, Chicago, Illinois, to Los Angeles, California </Li> <Li> US 70, Morehead City, North Carolina, to Holbrook, Arizona (where it met US 60) </Li> <Li> US 80, Savannah, Georgia, to San Diego, California: Dixie Overland Highway </Li> <Li> US 90, Jacksonville, Florida to Van Horn, Texas, (where it met US 80): Old Spanish Trail </Li> </Ul> <Li> US 2, Houlton, Maine, to Bonners Ferry, Idaho </Li>

Odd interstate routes run primarily north and south