The Chicago Transit Authority (CTA) announced the agency will begin the final major stage of the transformational Lawrence to Bryn Mawr Modernization project, which is part of CTA’s Red and Purple Modernization (RPM) Phase One Project, on July 28.

This stage includes the construction of four new, fully accessible Red Line stations at Lawrence, Argyle, Berwyn, and Bryn Mawr. This phase of work will be completed and the new stations opened in 2025.

This stage means that CTA customers will for the first time to able to ride Red and Purple Line Express trains that will travel on the new track structure between Lawrence and Bryn Mawr that replaces century-old tracks.

“We are pleased to start this next important phase of work that is modernizing and improving the Red Line for our customers,” said CTA President Dorval R. Carter Jr. “This next major stage of construction will build state-of-the-art, fully accessible stations, moving us closer to our commitment to making the entire CTA rail system fully accessible. We’re doing all of this while providing career-building training opportunities, good jobs, and plenty of opportunities for small businesses to participate in this historic Red Line project.”

CTA's Service Changes Beginning July 28

Red and Purple line service will continue throughout construction. During Stage B, the following temporary service impacts will be in place:

• New temporary rail station locations for Argyle & Bryn Mawr. Stage A temporary stations will close when Stage B temporary stations open

• The new Argyle temporary station will have entrances on W. Foster and W. Winona

• The new Bryn Mawr temporary station will have an entrance on W. Bryn Mawr, with an auxiliary exit at W. Catalpa

The Bryn Mawr temporary station will be southbound-only during Stage B because there is no space to build a platform that can serve northbound trains. Customers traveling northbound can:

• Board a southbound train at Bryn Mawr to the next station at Argyle, then cross the platform to board a northbound train

• Use the Thorndale Red Line station ¼-mile north of the Bryn Mawr station

• Lawrence and Berwyn stations will remain closed during Stage B

• Red and Purple line service will run on the two new easternmost tracks instead of the usual four tracks

• Red Line trains will stop at the two temporary stations (except for northbound trains at Bryn Mawr), while Purple Line Express trains will continue to run nonstop between Howard and Wilson

Bus Route Changes

• The current #81 Lawrence bus reroute to the Wilson Red Line will continue in Stage B

• #84 Peterson will be rerouted so that it connects with both the Bryn Mawr Stage B temporary station (southbound-only service) and Thorndale station (with northbound and southbound service)

• #92 Foster bus will resume its normal, pre-construction route (via Berwyn Avenue instead of rerouting via Bryn Mawr Avenue) and will connect to Foster entrance of Argyle Stage B temporary station

• #146 Inner Lake Shore/Michigan Express will continue its normal route and stop/layover at Berwyn/Broadway and will connect to Foster end of Argyle Stage B temporary station

• Transfers between bus and rail are free

Stage B Construction

CTA’s contractor, Walsh-Fluor, will demolish the southbound Red and Purple Line track structures (the two westernmost tracks). This includes the complete demolition of the embankment wall and bridges over cross streets in the Uptown and Edgewater communities between W. Ardmore and W. Lawrence avenues.

• Walsh-Fluor will build new track support columns on the west side of the CTA track structure

• The contractor will drill deep shafts, about 60-80 feet below ground, and fill with concrete, to create the foundations for new track support columns

• Support columns will be installed on top of the drilled shafts to support new track structure

The new bridges and tracks will be built via an overhead gantry system that will install pre-cast concrete bridge segments that are manufactured off-site and trucked into the RPM project area, similar to how construction was performed during Stage A work.

The construction method minimizes impacts on the community and the area needed by the contractor around the Red Line tracks to perform the construction work.

The new, permanent, fully accessible stations at Lawrence, Argyle, Berwyn, and Bryn Mawr will be built during this stage.