rail line was converted into a rail trail and allows users to bike, hike or snowmobile between Kalamazoo and South Haven. M-40 crosses into Allegan County near Base Line Lake. The highway follows Jenner Street along some curves near the banks of the Kalamazoo River as the trunkline enters the south side of Allegan. M-40 meets M-89, and the two highways run concurrently into downtown together on Cedar Street. At the intersection with Cutler Street, M-40/M-89 meets the western end of M-222 and M-40/M-89 turns west onto Cutler Street. The street name changes to Western Avenue as M-40/M-89 curves north and northwest, crossing the Kalamazoo River and leaving town. North of Lake Allegan, M-89 separates and runs west toward Fennville, and M-40 extends to Hamilton, crossing the Rabbit River. The highway runs through more farms and approaches the outskirts of Holland. The trunkline crosses over I-196 and follows Lincoln Road through an industrial area on the southeast side of town. At 48th Street, the highway turns west until meeting Lincoln Avenue. There, M-40 turns north for several blocks before ending at the intersection with BL I-196/US 31. History When M-40 was created around by July 1, 1919, it originally ran from Niles to Dowagiac and Decatur roughly along the current path of M-51. Then it traveled to the northeast where it entered Paw Paw and continued north to Allegan. M-40 is shown on a commercial 1921 map extending south of Niles to the Indiana state line, the segment used for the routing of US 31 starting in 1926, but not shown extending to Allegan. A section of the highway was realigned in the same time period near Paw Paw; after the change, M-40 followed the contemporary US 12 instead of Paw Paw Road. A rerouting of M-89 in 1927 shifted it to run from Allegan southeast to Plainwell instead of east to Martin; M-40 replaced M-89 on the Allegan–Martin roadway. In 1929, the routing from Allegan to Martin was removed and renumbered M-118, and M-40 was extended to the north out of Allegan along M-89 and its modern routing to a new terminus in Holland ending at US 31. The last segment of unpaved highway was paved in late 1945 or early 1946. This segment was near Dunningville in central Allegan County. In late 1960 or early 1961, when the I-94 freeway was completed in Van Buren County, M-40 moved