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CTA Green, Pink lines return after Lake Street bridge delay

CTA Green, Pink lines return after Lake Street bridge delay

Built World Chicago, IL local

Normal Green and Pink line service returned at 4 a.m. Thursday, Oct 29, ending a 16-day detour around the closed bridge.

October 29th, 2026: Green, Pink line service restored

Overview

Updated Oct 30

Normal service on the Chicago Transit Authority's Green and Pink lines returned at 4 a.m. Thursday, Oct 29. The Chicago Department of Transportation had finished the new west leaf of the 110-year-old Lake Street bridge, and crews tested trains before riders came back.

The detour had lasted 16 days. Pink Line trains skipped the Loop and ended at Racine, while Green Line trains ran in two sections with shuttle buses between Clinton and Clark/Lake. CDOT plans to install the bridge's east leaf in spring 2027, which will bring similar disruptions; a full reopening is slated for January 2028.

Why it matters

Two CTA lines stay cut off from the Loop with no return date, and the bridge stays shut to traffic until 2028.

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Key Indicators

Oct 29
Service restored
Normal Green and Pink line service resumed at 4 a.m. after CDOT completed the west leaf.
Oct 6, 2025
Bridge closed to cars and pedestrians
CDOT shut the span to vehicles and foot traffic on that date; it has not reopened since.
3
Lines back in the Loop
Brown, Orange and Purple line trains resumed Loop Elevated service at 4 a.m. Oct 26.
Jan 2028
Projected bridge completion
CDOT estimates construction will last until January 2028.
0
Lines still rerouted
Green and Pink line trains are back on their normal routes.
Spring 2027
Next bridge disruption
CDOT plans to install the east leaf, which will require similar Green and Pink line service changes.

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Organizations Involved

Chicago Department of Transportation
Chicago Department of Transportation
City government department
Completed the west leaf installation and restored normal Green and Pink line service Oct 29; east leaf work is planned for spring 2027

The city agency managing the Lake Street bridge reconstruction over the Chicago River.
Chicago Transit Authority
Chicago Transit Authority
Public transit agency
Restored normal Green and Pink line service at 4 a.m. Oct 29; next major disruption expected in spring 2027 for east leaf work

The public transit agency running the affected Green and Pink line trains.

Timeline

October 2025 October 2026

7 events Latest: October 29th, 2026 · 1 week ago
Tap a bar to jump to that date

  1. Green, Pink line service restored

    Latest Service Change

    Normal service resumed at 4 a.m. after CDOT installed the new west bridge leaf, rebuilt CTA tracks and walkways, and tested trains.

  2. Green, Pink lines do not return at 4 a.m.

    Service Change

    The scheduled resumption of normal Green and Pink line service did not happen. CDOT says crews are still aligning the new bridge leaf with the existing structure and will set a date once the work is done.

  3. Bridge work misses Wednesday target; no new date

    Announcement

    CDOT said crews needed more time to connect and align the new west bridge leaf with existing infrastructure. Green and Pink line detours stay in place, with normal service now expected later this week and no day named.

  4. Brown, Orange, Purple lines return to the Loop

    Service Change

    CTA finished track and interlocking work at Tower 18 over the weekend, and the three lines resumed Loop Elevated service. Green and Pink line detours continued.

  5. CDOT extends reroutes by 2 days

    Announcement

    City agency says bridge repair work is behind schedule; trains won't resume normal routes until Wednesday 4 a.m.

  6. CTA reroutes Green, Pink lines for bridge repairs

    Service Change

    Green Line splits into two sections; Pink Line terminates at Racine with Blue Line transfer for Loop access.

  7. Lake Street bridge closes for renovation

    Construction

    Bridge over the Chicago River shut to cars and pedestrians. Project estimated to run until January 2028.

Scenarios

1

Trains resume Wednesday morning as announced

Deadline passed (Oct 28, 2026)

Discussed by: CDOT's own timetable, reported by Chicago Sun-Times and CBS Chicago

The Wednesday 4 a.m. target passed without normal service; CDOT says trains return later this week with no day named. Green and Pink line trains return to normal Loop service, ending the shuttle bus detour at Clinton.

2

Crews hit more issues, delay extends again

Deadline passed (Nov 7, 2026)

Discussed by: Speculation grounded in CDOT's own surprise at alignment problems

The unexpected complexity that already added two days continues as crews work on the old-new bridge leaf connections. If further issues surface, CDOT extends the reroutes again, keeping shuttle buses running between Clinton and Clark/Lake.

3

Bridge renovation slips past January 2028

Uncertain Resolves by End of 2027

Discussed by: Observers noting the project's history of schedule misses

The repair work behind schedule this week foreshadows the larger renovation missing its January 2028 completion estimate. If that happens, the bridge stays closed to cars and pedestrians longer, and future train disruptions are likely as the project continues.

4

Second 13-day Green and Pink shutdown arrives in spring 2027

Likely Resolves by Q2 2027

Discussed by: CDOT's Lake Street bridge rehabilitation project page

CDOT says installing the new bridge spans requires two 13-day cut outages, one expected in fall 2026 and another in spring 2027. The spring shutdown would repeat this month's setup: no Green or Pink line trains across the bridge, with shuttle buses and a Blue Line transfer standing in.

5

Green and Pink line trains return to normal routes this week

Deadline passed (Nov 6, 2026)

Discussed by: CDOT's Oct 27 statement

CDOT says crews are finishing the connections and alignments between the new bridge leaf and the existing structure, and that normal service will resume later this week. The agency says it will name a date and time once the work is confirmed.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

1991-2007

Boston's Big Dig (1991-2007)

Boston's central artery tunnel project was originally scheduled to finish in 1998 at a cost of $2.8 billion. It opened in stages through 2007, ultimately costing over $14.8 billion.

Then

Traffic disruptions and detours stretched years beyond the original schedule.

Now

The project became the national reference point for infrastructure cost overruns and schedule slippage.

Why this matters now

Provides the familiar pattern of major bridge and tunnel projects drifting past their announced completion dates, which Chicago riders face with the Lake Street bridge's January 2028 estimate.

1989-2013

San Francisco-Oakland Bay Bridge eastern span (1989-2013)

The eastern span was damaged in the 1989 Loma Prieta earthquake. A replacement was designed and built over two decades, with repeated cost overruns and schedule delays before opening in 2013.

Then

Commuters endured years of temporary spans and construction detours.

Now

The span opened 24 years after the earthquake, at roughly $6.4 billion versus early estimates near $1.3 billion.

Why this matters now

Shows how a single bridge replacement can dominate a region's transit for years, the scale of commitment behind Chicago's renovation project.

Sources

(15)
+9
Chicago Sun-Times CBS Chicago City of Chicago Chicago Transit Authority Block Club Chicago WBBM Newsradio ABC7 Chicago Chicago Transit Authority City of Chicago Chicago Transit Authority Chicago Sun-Times City of Chicago Block Club Chicago CBS Chicago Chicago Transit Authority