Business routes of Interstate 94 in Michigan  There are currently eight business routes of Interstate 94 (I-94) in the US state of Michigan. These business routes connect I-94 to the downtown business districts of neighboring cities. These eight routes are all business loops which bear the Business Loop I-94 (BL I-94) designation. These loops are former routings of I-94's two predecessors in Michigan: US Highway 12 (US 12) or US 25. The westernmost BL I-94 runs through the twin cities of Benton Harbor and St. Joseph along the former routing of US 12 and US 31/US 33 that now includes a section of the Lake Michigan Circle Tour in the state. The loops in Kalamazoo, Battle Creek, Marshall, Albion, and Jackson were also formerly segments of US 12 which were later designated as separate version of Business US Highway 12 (Bus. US 12) through their respective cities before becoming BL I-94s in 1960. The route of the business loop through Ann Arbor was previously US 12 and then later M-14 before receiving its current moniker. The BL I-94 through Port Huron was previously US 25 and then Business US Highway 25 (Bus. US 25). Business Loop Interstate 94 (BL I-94) is a state trunkline highway and business loop that runs from I-94 through the downtowns of Benton Harbor and St. Joseph. The highway begins at exit 23 on I-94 in Lincoln Township where it runs along Lakeshore Drive, passing through the community of Shoreham. This section of the loop has five lanes (two in each direction with a center turn lane) before it drops a lane in each direction south of Shoreham, and it is part of the Lake Michigan Circle Tour (LMCT). BL I-94 briefly runs concurrently with M-63 along Main Street in downtown St. Joseph. This section widens to a four-lane divided street. BL I-94 separates from M-63 on the one-way pairing of Ship Street (eastbound) and Port Street (westbound) for three blocks before crossing the St. Joseph River to Benton Harbor; the LMCT concurrency ends at this point. From there it follows the five-laned Main Street through downtown Benton Harbor through roundabouts at Riverview Drive and 5th Street. At the latter roundabout, the roadway narrows back to three lanes. The easternmost leg of the loop, from Urbandale Avenue easterly to the eastern terminus at exit 33 on I-94 in Benton Township, is a four-lane, limited-access, divided highway; it features an unusual intersection with Crystal Avenue which is a diamond interchange built at-grade.