The Georgia portion of the Atlantic Intracoastal Waterway (AICW) begins in the north at the Savannah River, 7.3 NM eastward of Savannah, GA, at (MM "575.5"), the South Carolina/Georgia State Line. It then winds its way in a generally south-southwesterly direction to the St. Marys River and the Georgia/Florida State Line at (MM "713.7").
Aids to Navigation
Buoys and Marks
The Georgia Intracoastal Waterway Aids to Navigation (ATONS) are like most other lateral marks in the U.S. The difference is that Yellow Triangles or Yellow Squares are added to the mark to indicate they are ICW markers.
Caution! While Yellow Squares are typically found on green buoys or beacons and yellow triangles are typically found on red buoys or beacons, this is not always the case.
The rule is: When proceeding south on the Atlantic Intracoastal Waterway in Georgia, markers with yellow triangles are kept to starboard while marks with yellow squares are kept to port at all times.
All distances along the Georgia Atlantic Intracoastal Waterway are given in statute miles unless otherwise noted. Statute miles are used in order to conform to the distances shown on the small craft charts typically used along this route.
The Georgia portion of the AICW (southbound) is measured based on increasing mileage between the Savannah River (MM "575.5") and St. Marys River (MM "713.7") for a distance of 138.2 SM (120.1 NM).
The Federal project depth for the Georgia portion of the Atlantic Intracoastal Waterway from the Savannah River at the (South Carolina/Georgia State Line) to St. Marys River at the (Georgia / Florida State Line) is 12 feet.
The actual depths in the channels may vary due to shoaling. This may reduce the available water depths to less than the Federal project depth until maintenance dredging can be accomplished.
The following table lists the bridges; their schedules, and restrictions along the Atlantic Intracoastal Waterway (AICW) in Georgia.
The minimum overhead clearance of fixed bridges over the Georgia portion of the Atlantic Intracoastal Waterway is 65 feet.
This list is believed to be accurate as of
If any errors or omissions are noted, please e-mail us at
with any corrections or recommendations.
Atlantic Intracoastal Waterway - Georgia Savannah to St. Marys
Charted Vert. Clear.
Sam Varnedoe Bridge
New twin span bridge under construction. Scheduled completion June 2023.
Sam Varnedoe Bascule Bridge
Opens on Demand
M-F 0630 - 0900 and 1630 - 1830 the draw will open at 0700, 0800, and 1730 except Federal holidays.
Diamond Causeway Bridge
Torras Causeway Bridge
Jekyll Island Bridge
The above tables can be downloaded for your personal and private use. The Georgia Intracoastal Waterway Bridge List contains the tables in Statute Miles, Nautical Miles, and Kilometers. The files are Zipped Adobe (.pdf) format.
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:
A few overhead cables (5) cross Georgia’s Atlantic Intracoastal Waterway. One cable crossing has a reported clearance of 72 feet; located at Causton Bluff (MM "579.9"). The remainder of the cable crossings have a authorized clearance of 85 feet or greater.
Caution - Many of the overhead cables over the waterway carry high voltage, and an extra margin of safety should be allowed during threatening weather.
Entrances, Inlets, and Passes
There are numerous Entrances, Inlets, or Passes between the deep waters of the Atlantic Ocean and Georgia’s Coast. Between Tybee Roads in the north and St. Marys Entrance to the south, there were 11 at last count. Most all provide access to sheltered inland waters with many providing access to the Atlantic Intracoastal Waterway.
While some of these are only suitable for shallow draft vessels and/or local knowledge, some can be considered navigable for most vessels. We have listed them on the next page along with useful information on each to aid you in deciding if you wish to use a particular inlet.