Complex sentence: The I-495 designation was assigned to the New Jersey approach to the tunnel in anticipation of the Mid-Manhattan Expressway being completed; however, the project was cancelled and the Mid-Manhattan Expressway was officially removed from I-495 on January 1,1970.
Split into simpler sentences: The I-495 designation was assigned to the New Jersey approach to the tunnel in anticipation of the Mid-Manhattan Expressway being completed. However, the project was cancelled and the Mid-Manhattan Expressway was officially removed from I-495 on January 1,1970.