The official CTA groundbreaking ceremony was held Monday for a new 95th Street terminal.
The current station was first built in 1969.
It remains one of the CTA's busiest, serving about 20,000 rail and bus riders every weekday.
This reconstruction project is expected to cost $240-million and will create more than 700 construction jobs.
Improvements will include better lighting, a brighter atmosphere, expanded platforms, more escalators and elevators.
Mayor Rahm Emanuel said the project is vital to city efforts to spur economic recovery for South Side communities.
This project comes after the CTA rebuilt the entire South branch of the Red Line.
The 95th Street Station will remain open during most of the construction, which is scheduled to be completed in 2016.