In fact, I-35 has been under study almost continuously since the 1980's. As of July 2001, a firm plan for the freeway is beginning to develop. The proposal looks very promising for turning IH-35 into an impressive freeway. 1954 IH-35 is complete from north of downtown northward by June 1954. The facility is not yet fully access controlled, however.
Freeway is complete all the way through Austin.
Freeway is completed around Georgetown, north of Austin. The Inner Space Cavern is discovered during construction in 1963. Interchange at 183 is completed. The four-level interchange features 2 direct connectors. The interchange will be complete around 2004.