Cal-Sag / Little Calumet low fixed bridge group

41.69500000, -87.74000000

What Boaters Should Know

Cal-Sag / Little Calumet low fixed bridge group on Calumet Sag Channel / Little Calumet Rivernear Chicago south suburbs, IL; closed clearance about 24.6 ft. Route-choice control point.

Clearance And Opening Details

Opening / Contact Notes

Opening Schedule

Alternate to downtown Chicago; route has many 25-ft class bridges.

Operator / Contact

Not verified

Navigation And Regulatory Notes

Air Draft Notes

Closed/air-draft clearance: 24.6 ft. Datum/reference: USACE low operating level / flat pool. Clearance band: Low / Timing-sensitive

Navigation Notes

Alternate to downtown Chicago; route has many 25-ft class bridges. Cal-Sag avoids downtown Chicago's lower 17-ft route but still has low fixed bridges and industrial traffic. Closed/air-draft clearance: 24.6 ft. Datum/reference: USACE low operating level / flat pool. Clearance band: Low / Timing-sensitive Alternate to downtown Chicago; route has many 25-ft class bridges.

Regulatory Notes

Alternate to downtown Chicago; route has many 25-ft class bridges. Cal-Sag avoids downtown Chicago's lower 17-ft route but still has low fixed bridges and industrial traffic.

Planning Considerations

Confirm your vessel air draft, current water levels, bridge signage, official charts, bridge schedules, Local Notices to Mariners, and any VHF or phone procedures before approaching this bridge. If the bridge is movable, build extra time into your route plan for opening windows, traffic, restrictions, weather, and communication delays.