Great Loop planning reference

IL Great Loop Bridges

Explore 42 public Great Loop bridge planning records in IL, including waterway, route segment, bridge type, clearance fields, and verification notes.

136Public planning records
8Route segments
49Waterways
0Rows missing coordinates

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42 bridge planning records match, with 42 map markers.

IL Great Loop Bridges

Full filtered bridge references for this taxonomy page.

100th Street Bridge

Calumet River - Illinois / Chicago

Chicago, IL - MM RM 331.6

Bascule - 18.50 ft closed

Drawbridge

106th Street Bridge

Calumet River - Illinois / Chicago

Chicago, IL - MM RM 330.8

Bascule - 19.40 ft closed

Drawbridge

92nd Street Bridge

Calumet River - Illinois / Chicago

Chicago, IL - MM RM 332.6

Bascule - 19.10 ft closed

Drawbridge

LaSalle Street Bridge

Chicago River - Illinois / Chicago

Chicago, IL - MM RM 325.8

Bascule - 19.20 ft closed

Drawbridge

Michigan Avenue Bridge

Chicago River - Illinois / Chicago

Chicago, IL - MM RM 326.4

Bascule - 18.70 ft closed

Drawbridge

Wells Street Bridge

Chicago River - Illinois / Chicago

Chicago, IL - MM RM 325.7

Bascule - 19.20 ft closed

Drawbridge

ATSF Railway Bridge

Chicago Sanitary & Ship Canal - Illinois / Chicago

Chicago, IL - MM RM 314.8

Swing railroad / does not open - 19.50 ft closed

Fixed bridge

Conrail CSX Railroad Bridge

Chicago Sanitary & Ship Canal - Illinois / Chicago

Chicago, IL - MM RM 320.4

Bascule railroad - 17.60 ft closed

Drawbridge

CWI Railroad Bridge

Chicago Sanitary & Ship Canal - Illinois / Chicago

Chicago, IL - MM RM 317.5

Swing railroad / does not open - 18.60 ft closed

Fixed bridge

South Cicero Avenue Bridge

Chicago Sanitary & Ship Canal - Illinois / Chicago

Chicago, IL - MM RM 317.3

Twin span bascule - 18.60 ft closed

Drawbridge

Lake Street Bridge

South Branch Chicago River - Illinois / Chicago

Chicago, IL - MM RM 325.5

Bascule - 19.40 ft closed

Drawbridge

Madison Street Bridge

South Branch Chicago River - Illinois / Chicago

Chicago, IL - MM RM 325.3

Bascule - 19.50 ft closed

Drawbridge

Monroe Street Bridge

South Branch Chicago River - Illinois / Chicago

Chicago, IL - MM RM 325.2

Bascule - 19.40 ft closed

Drawbridge

PFW&C Railroad Bridge

South Branch Chicago River - Illinois / Chicago

Chicago, IL - MM RM 323.4

Lift railroad - 11.10 ft closed

Drawbridge

Great Loop lowest unavoidable fixed bridge

Illinois Waterway / Chicago Sanitary & Ship Canal - Route-wide

Lemont / Chicago area, IL - MM MM 300.5 / 300.6

Fixed/swing railroad bridge (does not open) - 19.70 ft closed

Fixed bridge

Torrence Avenue Bridge

Calumet River - Illinois / Chicago

Chicago, IL - MM RM 328.1

Lift - 24.10 ft closed

Drawbridge

South Kedzie Avenue Bridge

Chicago Sanitary & Ship Canal - Illinois / Chicago

Chicago, IL - MM RM 319.5

Fixed - 23.00 ft closed

Fixed bridge

Southern Harlem Avenue Bridge

Chicago Sanitary & Ship Canal - Illinois / Chicago

Lyons / Forest View, IL - MM RM 314.0

Bascule listed does not open - 24.90 ft closed

Fixed bridge

Pearl Railroad Bridge

Illinois River - Illinois / Chicago

Pearl, IL - MM RM 43.2

Lift railroad - 21.30 ft closed

Drawbridge

Florence Highway Bridge

Illinois River - Illinois / Chicago

Florence, IL - MM RM 56.0

Lift - 28.10 ft closed

Drawbridge

Hardin Drawbridge

Illinois River - Illinois / Chicago

Hardin, IL - MM RM 21.6

Lift - 27.40 ft closed

Drawbridge

ConRail Railroad Bridge

Little Calumet River - Illinois / Chicago

Chicago / Calumet City area, IL - MM RM 325.3

Fixed railroad - 25.10 ft closed

Fixed bridge

1. Why Bridge Planning Matters

  • Avoid delays, groundings, and unsafe transits.
  • Save time and stress with verified information.
  • Plan with confidence using current data.

2. Fixed Bridges vs Drawbridges

  • Fixed bridges have set clearances.
  • Drawbridges open on schedules or on request.
  • Verify status and requirements before arrival.

3. Clearance & Air Draft

  • Clearance can change with water levels and conditions.
  • Compare your vessel air draft to current clearances.
  • Closed fields are planning references only.

4. Verify Openings Before Transit

  • Check opening schedules, restrictions, and notices.
  • Confirm with official charts, signage, and local updates.
  • Treat phone/VHF info as starting points, not final.

5. Contact & VHF Planning

  • Note bridge tenders and operator contacts.
  • Use VHF channels for requests and updates.
  • Have backups in case phone service is unavailable.

6. Timing, Water Levels & Restrictions

  • Water levels affect clearance and bridge operation.
  • Consider tides, currents, traffic, and daylight.
  • Watch for maintenance, weather, and local restrictions.

7. Bridge Planning Checklist

  • Compare air draft vs clearance
  • Verify bridge status & type
  • Check water levels & trends
  • Confirm schedules & openings
  • Note contacts & VHF channels
  • Plan timing & backup options

8. Quick Bridge FAQs

  • Can I rely on listed clearances? No, always verify current data.
  • What is an air-draft concern? When clearance is close to your vessel height.
  • Do schedules change? Yes, confirm before arrival.
Planning awareness only: Bridge information is provided for planning awareness only. Always verify current bridge status, clearance, water levels, bridge schedules, opening restrictions, Local Notices to Mariners, bridge signage, and official charts before transit. FloatPlanWizard is not a navigation authority.