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Interstate 43 (I-43) is a Interstate Highway located entirely within the U.S. state of Wisconsin, connecting Interstate 39 and Interstate 90 in Beloit with Milwaukee and Interstate 41, U.S. Route 41 and U.S. Route 141 in Green Bay. Wisconsin Highway 32 shares a concurrency with I-43 in two sections and US 41, U.S. Route 45, Interstate 94, Interstate 894, U.S. Route 10, Wisconsin Highway 57, and Wisconsin Highway 42 overlap I-43 once each. There are no auxiliary or business routes connected to I-43. I-43 came about as a result of toll road proposals that included a Milwaukee to Superior corridor that included Hurley, Wausau and Green Bay. Only the Milwaukee to Green Bay section was approved. The route was originally planned to follow an alignment about midway between US 41 and US 141 (the latter paralleled Lake Michigan at the time) along Highway 57. Controversy about this location and use of right-of-way led to the establishment of the current alignment, which follows much of what was the 1950s-era realignment of US 141 from Milwaukee to Sheboygan, and a new alignment from Sheboygan to Green Bay. This section was completed in 1981. The Beloit-to-Milwaukee segment was developed after two separate proposals for Interstates, one of them being between Milwaukee and Beloit and the other between Milwaukee and Janesville. The Milwaukee-Beloit route was chosen, completed in 1976 as WIS 15 and renumbered as I-43 in 1988. To connect the two segments, I-43 was signed concurrently with the east–west segment of I-894 and the north–south portion of I-94 in the greater Milwaukee metropolitan area from I-894 to the Marquette Interchange, which was completely reconstructed with work being completed in 2008. ==History== Wisconsin had anticipated the Interstates with studies of possible toll roads. When the original Interstate system was approved the state was only given two routes: I-90 and I-94.〔 The Wisconsin Transportation Commission submitted a request to add an Interstate in 1953 connecting Milwaukee to Green Bay, a request the FHWA denied. The commission, after a study by Wisconsin Turnpike Commission—which was established in 1953—submitted a request in 1963 for a route that connected Milwaukee and Superior by way of Green Bay, Wausau, Hurley and Ashland which could be completed in increments. However, only the Milwaukee to Green Bay segment was approved. The original plan for the northern part of I-43 was to locate it midway between US 141 and US 41, using most of the current alignment of WIS 57 north of WIS 33 in Saukville. But opposition to the plan by farmers and landowners within the corridor arose. According to the opponents of the I-43 construction, what the commission revealed as their plan to construct I-43 along the WIS 57 corridor did not reveal that instead of using the existing right-of-way, the freeway was to be built west of WIS 57. This was the case despite the fact that WIS 57 had a wide right-of-way of . Protests, including farmers bringing their cows to graze on the Wisconsin State Capitol grounds, prompted a compromise to utilize the freeway built for US 141 between Milwaukee and Sheboygan instead, building the remaining freeway for the Interstate itself.〔 This plan, particularly the new freeway, met resistance from the Brown, Sheboygan, and Manitowoc County governments. Construction first began in 1963 on the freeway that was at the time designated US-141. The first segment to begin construction was a segment beginning at the Port Washington Road exit in Milwaukee County. An additional ten miles (16 km) of the highway were completed in Ozaukee County by 1964.〔 In 1965, a bypass of Sheboygan opened to traffic. The last major segment, consisting of of roadway, was started in 1972 after the last of these governments, Manitowoc County, pledged their support.〔 The portion in Milwaukee County extending from the Port Washington Road exit to the Marquette Interchange was completed in 1981 to open the route.〔 The southwestern portion has also had a history of requests for Interstate routings. Interstate routings for such a connection between Beloit and the Milwaukee metropolitan area were requested by WisDOT but denied by FHWA in 1973. Another request for a link to Janesville was also denied. Despite the denials, local and state officials continued to seek funding to construct a freeway between these two metropolitan areas.〔 A government collaboration called the "Highway 15 Committee" was formed to present and promote the route. Construction began on the route in the 1960s with the first segment, a connector linking US 45 with I-894 as part of the project to build the Hale Interchange connecting the pending route with I-894. The new connector received the US 45 designation as that highway was transferred onto the freeway heading north. The first long segment was completed in 1969. It extended from the US 45 "connector" to CTH-F (now WIS 164)in Big Bend. After this segment was opened, the WIS 15 designation was applied. The next segment, to East Troy, was opened in 1972, the year the "Highway 15 Committee" had hoped the route would be completed in its entirety. It was extended to Elkhorn in 1973 in conjunction with the US 12 freeway construction, then to I-90 in 1976. I-43 signs were placed on the freeway by 1988 after designation in 1987, replacing WIS 15. I-43 was also mapped concurrently with I-94 and I-894 to link the two segments together. Even though exit number tabs were labeled according to the new mileposts, the mileposts themselves were not renumbered to coincide with the current length until 1991. The Marquette Interchange, which connects I-43 with I-94, US 41 and Interstate 794, was completely reconstructed over a four-year span, beginning in October 2004 and ending in September 2008. This project eliminated left-hand exits and widened connecting ramps between I-94 and I-43 to ease congestion problems.〔 〕 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「Interstate 43」の詳細全文を読む スポンサード リンク
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