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M-60 is an east–west state trunkline highway in the US state of Michigan. It runs from the Niles area at a junction with US Highway 12 (US 12) to the Jackson area where it ends at Interstate 94 (I-94). The trunkline passes through a mix of farm fields and woodlands, crosses or runs along several rivers and connects several small towns of the southern area of the state. The westernmost segment runs along divided highway while the easternmost section is a full freeway bypass of Jackson. M-60 was originally designed in 1919 with the rest of the state highway system in Michigan. It ran roughly along its current route connecting downtown Niles to downtown Jackson. In the mid-1920s, the western end was extended to New Buffalo; since then several bypasses of the smaller towns along the highway were added. One of these bypasses resulted in the creation of an alternate route (Alternate M-60, Alt. M-60) through Concord; that route has since been decommissioned. When Niles was bypassed in the 1950s, a business loop (Business M-60, Bus. M-60) was created through town. After the western end was truncated to its current location, that business loop was converted to a business spur. ==Route description== M-60 starts at an interchange along US 12 southeast of Niles in southwestern Cass County. From this interchange, the highway runs northeasterly along the divided highway on Detroit Road to an intersection with Bus. M-60 (Yankee Road). There, the main highway turns due east along the shore of Barron Lake. The trunkline continues through mixed farm fields and woodlands, running northeastward to Cassopolis and rounding Stone Lake on the southern approach to town. M-60 runs north–south through town on Broadway Street, merging with M-62 to run concurrently into downtown Cassopolis. M-60 turns eastward on State Street, separating from M-62, and leaves town〔〔 while crossing a line of the Canadian National Railway. East of Cassopolis, M-60 runs past Diamond Lake and through farm fields. At Vandalia, the highway passes Donnell Lake before meeting M-40 north of Bair Lake in Jones. East of Jones, the trunkline crosses into St. Joseph County and meets US 131 on the south side of Three Rivers. The two highways run concurrently northward through a retail business corridor to an intersection with Michigan Avenue. M-60 turns east along Michigan Avenue following Bus. US 131 into downtown. The business loop turns north at the same intersection where M-60 meets M-86 near the Rocky River crossing. Continuing eastward, M-60 passes the high school and Three Rivers Municipal Dr. Haines Airport while running along the St. Joseph River. The trunkline turns north, runs by Fishers Lake and continues out of town through farm fields. Near Mendon, the highway runs along the river again. East of town, M-60 meets M-66, and the two run east and northeast through Leonidas into the extreme northwest corner of Branch County.〔〔 South of Athens, M-66 turns northward and M-60 continues around Union City and into southern Calhoun County. The road runs through Burlington on Leroy Street. At Marshall Street. M-60 meets the southern end of M-311 which runs north to the Battle Creek area. M-60 continues east through farm fields to Tekonsha where it meets Interstate 69 (I-69) northwest of town. Continuing to Homer, the highway runs along Lehigh Street in town; M-99 merges into M-60 after the intersection with Hillsdale Street. East of town, the highway widens into a four-lane divided highway; M-99 turns north along this short section of roadway and M-60 reverts to a two-lane highway again. The trunkline crosses the Kalamazoo River at Concord before it crosses into Jackson County. At Spring Arbor, M-60 passes the campus of Spring Arbor University. Outside of Jackson, the highway widens out to a full freeway bypass around the west side of the city. This bypass has one interchange with Michigan Avenue near Jackson County Airport. North of this interchange, the highway picks up the Business Loop I-94〔〔 and crosses the Norfolk Southern Railway line in the area.〔 The freeway ends at a trumpet interchange with I-94 northwest of Jackson. M-60 is maintained by the Michigan Department of Transportation (MDOT) like other state highways. Among these responsibilities, the department tracks the level of traffic that uses the roadways under its jurisdiction. This is expressed using a metric called annual average daily traffic (AADT), which is a statistical calculation of the average daily number of vehicles on a segment of roadway. According to MDOT's surveys in 2009, the highest traffic counts were 12,547 cars and 999 trucks along the freeway immediately south of I-94 near Jackson; the lowest AADT was the 2601 cars and 384 trucks west of Union City. Only two sections of M-60 have been listed on the National Highway System (NHS): along the US 131 concurrency in Three Rivers and on the BL I-94 concurrency near Jackson. The NHS is a network of roads important to the country's economy, defense, and mobility. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「M-60 (Michigan highway)」の詳細全文を読む スポンサード リンク
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