ICW - South Carolina

The minimum overhead clearance of fixed bridges over the South Carolina portion of the Atlantic Intracoastal Waterway is 65 feet with a federal project depth of 12 feet.

Aids to Navigation


NOAA Charts #11534, #11518, and #11507 provide coverage of the South Carolina portion of the AICW.

Chart #11534 - Myrtle Grove Sound, NC to Casino Creek, SC covers the ICW from Mile 341.0, the North Carolina/South Carolina state line to Casino Creek at Mile 426.0.

Chart #11518 - Casino Creek to the Beaufort River covers the ICW from Mile 426.0, Casino Creek to Mile 543.0 at the Beaufort River.

Chart #11507 - Beaufort River to St. Simons Sound, GA covers the ICW from Mile 543.0, at the Beaufort River to Mile 576.0 at the South Carolina/Georgia state line and onto St. Simons Sound, GA at Mile 674.0.

Buoys and Marks

Intracoastal Waterway buoys and navigational markers are like other lateral marks in the U.S. the difference is that either yellow triangles or yellow squares are added to the mark to indicate they are ICW markers.

When proceeding south on the Atlantic Intracoastal Waterway (Norfolk, VA to Key West, FL) or west on the Gulf Intracoastal Waterway (Ft. Meyers, FL to Brownsville, TX)

Green ICW Marker Red ICW Marker

Regardless of the color of the mark!

Atlantic Intracoastal Waterway - South Carolina Bridge Schedule

The following table lists the bridges; their schedules, and restrictions along the Atlantic Intracoastal Waterway (AICW) in South Carolina.

This list is believed to be accurate as of July 2018. If any errors or omissions are noted, please e-mail us at with any corrections or recommendations.

Atlantic Intracoastal Waterway - South Carolina

Mile Marker Bridge Charted Vert. Clear. Schedule Restrictions VHF
347.0 Little River Highway Bridge 65’ Fixed Bridge    
347.2 Little River Swing Bridge 7’ Opens on Demand   09
349.2 Robert Edge/Main St. Bridge 65’ Fixed Bridge    
354.0 Barefoot Landing Swing Bridge 31’ Opens on Demand   09
355.5 Conway Bypass Bridge 65’ Fixed Bridge (3) Spans  
359.0 Grand Dunes Bridge 65’ Fixed Bridge    
360.5 Grissom Parkway Bridge 65’ Fixed Bridge    
365.0 MB RR Bascule Bridge 16’ Always Open Abandoned  
365.1 Route 501 Bridge 65’ Fixed Bridge    
366.0 Fantasy Harbor Bridge 65’ Fixed Bridge    
371.0 Socastee Swing Bridge 11’ Opens on Demand May be delays during heavy traffic periods. 09
371.1 Thrailkill (Route 544) Bridge 65’ Fixed Bridge    
372.0 Carolina Bays Pkwy Bridge ≈68’ Fixed Bridge New Construction - Completion Expected in 2018.  
401.0 Ocean Highway Bridge 65’ Fixed Bridge    
411.5 Tom Yawkey Pontoon Bridge 0’ Normally Open - Infrequent Use.   09
459.0 Isle of Palms Bridge 65’ Fixed Bridge    
462.2 Ben Sawyer Swing Bridge 31’ The draw shall open on weekends and Fed. holidays from 0900-1900 on the hour. Other times on demand. Closed M-F 0700-0900 and 1600-1800 except Fed. holidays. 09
469.9 R.B. Scarborough Bridge 67’ Fixed Bridge    
470.8 Wappoo Creek Bascule Bridge 31’ M-F, except Fed. Holidays, the draw shall open between 0930 and 1530, only once on the half hour. Other times on demand. The draw need not open from 0600 to 0929 and 1531 to 1900, Monday through Friday, except Fed. holidays. 09
479.5 John Limehouse Bridge 65’ Fixed Bridge    
501.5 Dawho Bridge 65’ Fixed Bridge    
536.0 Ladies Island Swing Bridge 30’ M-F except Fed. Holidays: 0900 to 1500 - On the Hour. From 0630 to 0900 and 1500 to 1800, the draw need not open.
April, May, October, and November - M-F except Fed. Holidays: From 0700 to 0900 and 1600 to 1800, the draw need not open.
Between 0900 to 1600, the draw need open only on the hour and half-hour.
539.5 McTeer Bridge 65’ Fixed Bridge    
557.5 Hilton Head Bridge 65’ Fixed Bridge    

The South Carolina ICW Bridge List as well as the entire AICW Bridge List (Norfolk to Miami) can be downloaded for your personal and private use below. The ZIP files contain the schedules in Adobe (.pdf) file format:

AICW South Carolina Bridge Schedule - Download

AICW Bridge and Lock Schedule (Norfolk to Miami) - Download

Temporary Long Term Bridge Restrictions

Atlantic Intracoastal Waterway - South Carolina

Mile Marker Bridge Charted Vert. Clear. Restrictions
372.0 Carolina Bays Pkwy Bridge ≈68’ Temporary - Through Spring/Summer 2018 new bridge construction over the waterway will involve some waterway restrictions or closures.

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