The drive curves with the river and will take you directly to the corner of Wabash and Wacker Place. A total of 13 blocks. You can also catch the 60 or 151 bus on Jackson. Either one will take you east to Michigan Avenue, then turn north. Get off at Wacker Place.
Taxis are also available.
Turn north on Garland Court off of Lake Street between Wabash and Michigan Avenues. Proceed to the end and turn left. Weekend rates are usually quite good.