Interstate 55
Overview
 
Interstate 55 is an Interstate Highway in the central United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Its odd number indicates that it is a north–south Interstate Highway. I-55 goes from LaPlace, Louisiana
Laplace, Louisiana
LaPlace is a census-designated place in St. John the Baptist Parish, Louisiana, United States, along the east bank of the Mississippi River in the New Orleans metropolitan area. The population is 32,134 at the 2010 census....

 at Interstate 10
Interstate 10
Interstate 10 is the fourth-longest Interstate Highway in the United States, after I-90, I-80, and I-40. It is the southernmost east–west, coast-to-coast Interstate Highway, although I-4 and I-8 are further south. It stretches from the Pacific Ocean at State Route 1 in Santa Monica,...

 to Chicago
Chicago
Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

 at U.S. Route 41
U.S. Route 41
U.S. Route 41 is a north–south United States Highway that runs from Miami, Florida to the Upper Peninsula of Michigan. Until 1949, the part in southern Florida, from Naples to Miami, was U.S...

 (Lake Shore Drive
Lake Shore Drive
Lake Shore Drive is a mostly freeway-standard expressway running parallel with and alongside the shoreline of Lake Michigan through Chicago, Illinois, USA. Except for the portion north of Foster Avenue , Lake Shore Drive is designated as part of U.S...

), at McCormick Place
McCormick Place
McCormick Place is the largest convention center in the United States. It is made up of four interconnected buildings sited on and near the shore of Lake Michigan, about 4 km south of downtown Chicago, Illinois, USA. McCormick Place hosts numerous trade shows, including the Chicago Auto Show,...

. A common nickname for the highway is "double nickel."

The section of I-55 between Chicago and St. Louis
St. Louis, Missouri
St. Louis is an independent city on the eastern border of Missouri, United States. With a population of 319,294, it was the 58th-largest U.S. city at the 2010 U.S. Census. The Greater St...

 was built as an alternate route for U.S. Highway 66. It crosses the Mississippi River
Mississippi River
The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

 twice: once at Memphis, Tennessee
Memphis, Tennessee
Memphis is a city in the southwestern corner of the U.S. state of Tennessee, and the county seat of Shelby County. The city is located on the 4th Chickasaw Bluff, south of the confluence of the Wolf and Mississippi rivers....

, and again at St. Louis, Missouri
St. Louis, Missouri
St. Louis is an independent city on the eastern border of Missouri, United States. With a population of 319,294, it was the 58th-largest U.S. city at the 2010 U.S. Census. The Greater St...

.

In 2009, officials in Green Bay, Wisconsin, began a campaign to have U.S. Route 41
U.S. Route 41 in Wisconsin
In the U.S. state of Wisconsin, U.S. Highway 41 runs north–south the eastern side of the state. It enters from Illinois at Pleasant Prairie, and runs north to its northern terminus at the Michigan border at Marinette, WI.-Route description:US-41 is a freeway for nearly 70% of its route...

 in that area designated as I-55.
 
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