User:SPUI/Chicago double-decker streets

Bridges:

Other references

 * m.t.r post
 * Lakeshore East map
 * "Ramps connecting Lower and Upper Wacker have been permanently closed at Lake Street and Wabash to reduce accidents.The ramp at Randolph has been converted into an up-ramp to make it easier for CTA buses to go to the Metra stations. The principal access points in and out of Lower Wacker are now at Garvey Court, Garland Court and at Post Place. "We decided on fewer ramps but to make them more intelligent," said Deputy Transportation Commissioner Stan Kaderbek."
 * bridge photos
 * 
 * buses on Lower Wacker: 120 121 122 123