The reroute will take place from 5 a.m.-8 p.m. Sunday, the CTA said.
Expect an extra 2-4 mins. of travel time on the Red Line and 4-6 extra mins. on the Purple Line soon.
Starting at 9 p.m. Monday, portions of Broadway and Leland avenues will be closed nightly.
The project includes $25 million to rehabilitate the Jefferson Park Transit Center, officials said.
Track maintenance and work on the new Cermak-McCormick Place station will affect weekend commutes.
The funding is part of a $500 million plan to overhaul the 90-year-old station.
The station renovation is part of the CTA's four-year overhaul of the Blue Line, officials said.
The city is exploring a plan to bring a green-powered bus garage and public park to the riverfront.
The "CT&A" Facebook page has seen plenty of "haters" who find the work offensive, its creator says.
CTA riders jumped into action, using a bike's chain lock to rescue the injured man.
The CTA said inclement weather caused the work to be canceled.
The ride-sharing service warned that surge pricing could push fares above $100 after midnight.
The festive bus, new in 2014, will be making stops along Western Avenue on Tuesday.
The Park District "could have done a little outreach before starting the chainsaws," one neighbor said.
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