linguistic:voice_change, structural:summarization, information:highlighting, structural:expansion, structural:reformatting
Roads and highways

Four interstate highways connect the city to a larger regional highway system. Interstate 70, an east–west highway, runs from the northwest corner of the city to downtown St. Louis. The north–south Interstate 55 enters the city at the south near the Carondelet neighborhood and runs toward the center of the city, and both Interstate 64 and Interstate 44 enter the city on the west, running parallel to the east. Two of the four interstates (Interstates 55 and 64) merge south of Gateway Arch National Park and leave the city on the Poplar Street Bridge into Illinois, while Interstate 44 terminates at Interstate 70 at its new interchange near N Broadway and Cass Ave. A small portion of the Interstate 270 outer belt freeway runs through the northern end of the city.

The 563-mile Avenue of the Saints links St. Louis with St. Paul, Minnesota.

Major roadways include the north–south Memorial Drive, located on the western edge of Gateway Arch National Park and parallel to Interstate 70, the north–south streets of Grand Boulevard and Jefferson Avenue, both of which run the length of the city, and Gravois Road, which runs from the southeastern portion of the city to downtown and used to be signed as U.S. Route 66. An east-west roadway that connects the city with surrounding communities is Martin Luther King, Jr. Drive, which carries traffic from the western edge of the city to downtown.