Interstate business routes are roads connecting a central or commercial district of a city or town with an Interstate bypass. These roads typically follow along local streets often along a former U.S. Route or state highway that had been replaced by an Interstate. Interstate business route reassurance markers are signed as either loops or spurs using a green shield shaped sign and numbered like the shield of the parent Interstate highway.
Along Interstate 55 (I-55), there are a total of six business routes, three in both Missouri and Illinois, all which are business loops.
Interstate 55 Business (I-55 Bus.) is a business loop in New Madrid County, Missouri, that is a major arterial surface street that serves downtown New Madrid, Missouri. It runs north from I-55 at exit 44 in New Madrid through downtown New Madrid to I-55 at exit 49 (north of New Madrid). The entire route runs concurrently with U.S. Route 61/U.S. Route 61 (Great River Road).
Major intersections<br/>
Interstate 55 Business (I-55 Bus.) begins at US 61/Route 74 in Cape Girardeau at exit 93 and ends at US 61 at exit 105 in Fruitland. It also crosses its parent Interstate at exit 99 {[clear
Interstate 55 Business (I-55 Bus.) spans from US 67/US 61 at exit 174 in Crystal City to McNutt Street at exit 178 in Herculaneum.
Interstate 55 Business (I-55 Bus.) is to a major arterial surface street that serves downtown Springfield, Illinois. It runs north from the intersection of I-55 and I-72 through downtown to Illinois Route 4 (IL 4, Veterans' Parkway). It then runs northeast to Sherman.
All of I-55 Bus. was part of US 66 at some point.
Major intersections<br/>
Interstate 55 Business (I-55 Bus.) serves the downtown of Lincoln, Illinois.
Major intersections<br/>
Interstate 55 Business (I-55 Bus.) in BloomingtonâÂÂNormal is known for its entire length as Veterans Parkway. It is a divided, limited-access highway bypassing the BloomingtonâÂÂNormal area to the south and east. The route's northâÂÂsouth portion largely passes through a retail core, including Eastland Mall and The Shoppes at College Hills. The highway is also the recommended route from I-39, I-55, and I-74 to Central Illinois Regional Airport via IL 9.
Major intersections<br/>