• Sat Apr 30 – 8 a.m.
• Wed May 4, 11, 18, 25 – 9:30 a.m.
• Sat May 7, 14, 21, 28 – 8 a.m.
• Wed Jun 1, 8, 15, 22, 29 – 9:30 a.m.
• Sat Jun 4, 11, 18, 25 – 8 a.m.

Source: Chicago Department of Transportation

(Left) Gears that raise and lower the DuSable Bridge, photographed last September.