sentences:  As a result, Governor Martha Layne Collins banned most northbound tractor-trailer traffic from the hill.From 1989 until 1994 $50-million in reconstruction was spent to straighten the hill's S-curve and add a fourth lane for southbound traffic, and in 1995 the truck ban was lifted.Also as part of the reconstruction, ramps were added at Pike Street to give complete access, while an interchange with Jefferson and Euclid avenues was obliterated.