User:Eprell/Interstate 90 in Wisconsin

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All 187 miles of I-90 in Wisconsin have a speed limit of 70 mph.

In 1959, I-90 was extended north from Rockton Road, the Northwest Tollway's (now Jane Addams Memorial Tollway's) northern terminus, in Illinois to US 14 near Janesville, Wisconsin. In 1961, another section of I-90 was opened. This section ran from US 12/US 18 (later moved slightly southward) near Madison to US 12/US 16 (now US 12/WIS 16) near Wisconsin Dells. In 1962, a connection between both opened sections opened to traffic. In 1964, I-90 was extended northwestward to US 12/US 16 (now US 12/WIS 16) near Tomah. The Dresbach Bridge, spanning the Mississippi River west of La Crosse, was dedicated and opened to traffic on October 12, 1967. By 1969, another separate section of I-90 was opened, traveling from the Minnesota state line to US 16 (now WIS 16) near La Crosse. Later, both opened sections were then connected together. In April 2016, the bridge was closed until the construction of a new bridge was completed towards the end of 2016.

Starting in 2015, the 45-mile (72 km), southern most section of I-39/I-90 (from US 12/US 18 to the Illinois state line) underwent a major reconstruction project. This involved widening the corridor to six lanes (eight lanes in the Janesville area) and reconfiguring all interchanges, including the I-43/WIS 81 interchange. The overall project is scheduled to be completed in 2021. A complete reconstruction of the I-90/I-94 interchange will take place in Mauston, WI. This project will begin in the Spring of 2022 and end sometime in 2023.