(1)    The secretary with approval of the governor and subject to the limits of s. 20.866 (2) (ur), (us) and (uu) may direct that state debt be contracted for the purposes set forth in subs. (2) and (3) subject to the limits set forth in subs. (2) and (3). Said debts shall be contracted in accordance with ch. 18.

   (2)   It is the intent of the legislature that state debt not to exceed $185,000,000 for the construction of highways be appropriated over a 6-year period except that if funds allocated to any project hereunder are not used for such project or if additional highway construction funds are made available hereunder, they shall first be used for development of state trunk highway 45 from the intersection with highway 41 to and including the West Bend bypass, and except that no funds shall be used for the construction of the proposed Bay freeway and no funds shall be used for the “Augusta Bypass” project in Eau Claire County. Nothing in this section shall be construed so as to allow the redevelopment of state trunk highway 83 in Washington and Waukesha counties. U.S. numbered highway 16 from Tomah to the interchange with I-90 east of Sparta shall be retained as part of the state highway system in the same route as in use on November 1, 1969. The improvement project for state trunk highway 23 from Sheboygan to Fond du Lac shall be undertaken as swiftly as practicable.

   (3)   It is the intent of the legislature that state debt not to exceed $15,000,000 shall be incurred for the acquisition, construction, reconstruction, resurfacing, development, enlargement or improvement of the connecting highway facility known as the 27th Street viaduct in Milwaukee County.