Part one of a major construction project affecting Lake Shore Drive and the Stevenson Expressway has kicked-off.
The northbound LSD ramp to the outbound Stevenson will undergo reconstruction.
The ramp was closed from 1 a.m. to 5a.m. Thursday, and that will be the case again on Friday.
Throughout construction, the ramp will remain a single lane, but be reduced to just 11 feet wide.
The project is expected to be completed next summer.
The reconstruction of the southbound LSD ramp to outbound I-55 will begin later this summer and last until winter 2016.