Part 117 - Drawbridge Operation Regulations  


Subpart A - General Requirements
§ 117.1 - Purpose.
§ 117.3 - Applicability.
§ 117.4 - Definitions.
§ 117.5 - When the drawbridge must open.
§ 117.7 - General requirements of drawbridge owners.
§ 117.8 - Permanent changes to drawbridge operation.
§ 117.9 - Delaying opening of a draw.
§ 117.11 - Unnecessary opening of the draw.
§ 117.15 - Signals.
§ 117.17 - Signalling for contiguous drawbridges.
§ 117.19 - Signalling when two or more vessels are approaching a drawbridge.
§ 117.21 - Signalling for an opened drawbridge.
§ 117.23 - Installation of radiotelephones.
§ 117.24 - Radiotelephone installation identification.
§ 117.31 - Drawbridge operations for emergency vehicles and emergency vessels.
§ 117.33 - Closure of draw for natural disasters or civil disorders.
§ 117.35 - Temporary change to a drawbridge operating schedule.
§ 117.36 - Closure of drawbridge for emergency repair.
§ 117.37 - Opening or closure of draw for public interest concerns.
§ 117.39 - Authorized closure of drawbridge due to infrequent requests for openings.
§ 117.40 - Advance notice for drawbridge opening.
§ 117.41 - Maintaining drawbridges in the fully open position.
§ 117.42 - Remotely operated and automated drawbridges.
§ 117.43 - Changes in draw operation requirements for regulatory purposes.
§ 117.45 - Operation during winter season in the Great Lakes area.
§ 117.47 - Clearance gauges.
§ 117.49 - Process of violations.
Subpart B - Specific Requirements
§ 117.51 - General.
§ 117.53 - Applicability.
§ 117.55 - Posting of requirements.
§ 117.57 - Advance notice.
§ 117.59 - Special requirements due to hazards.
District of Columbia
§ 117.253 - Anacostia River.
§ 117.255 - Potomac River.
Kentucky
§ 117.415 - Green River.
§ 117.417 - Ohio River.
Louisiana
§ 117.422 - Amite River.
§ 117.423 - Atchafalaya River.
§ 117.424 - Belle River.
§ 117.425 - Black Bayou.
§ 117.427 - Black River.
§ 117.429 - Boeuf Bayou.
§ 117.431 - Boeuf River.
§ 117.433 - Bonfouca Bayou.
§ 117.434 - Caddo Lake.
§ 117.435 - Carlin Bayou.
§ 117.436 - Chef Menteur Pass.
§ 117.437 - Chevron Oil Company Canal.
§ 117.438 - Colyell Bayou.
§ 117.439 - Company Canal.
§ 117.440 - Des Allemands Bayou.
§ 117.441 - D'Inde Bayou.
§ 117.443 - Du Large Bayou.
§ 117.444 - Falgout Canal.
§ 117.445 - Franklin Canal.
§ 117.447 - Grand Cabahanosse Bayou.
§ 117.449 - Grosse Tete Bayou.
§ 117.451 - Gulf Intracoastal Waterway.
§ 117.453 - Houma Canal.
§ 117.455 - Houma Navigation Canal.
§ 117.457 - Houston River.
§ 117.458 - Inner Harbor Navigation Canal, New Orleans.
§ 117.459 - Kelso Bayou.
§ 117.460 - La Carpe Bayou.
§ 117.461 - Lacassine Bayou.
§ 117.463 - Lacombe Bayou.
§ 117.465 - Lafourche Bayou.
§ 117.467 - Lake Pontchartrain.
§ 117.469 - Liberty Bayou.
§ 117.471 - Little Black Bayou.
§ 117.473 - Little River.
§ 117.475 - Little (Petit) Caillou Bayou.
§ 117.477 - Lower Atchafalaya River.
§ 117.478 - Lower Grand River.
§ 117.479 - Macon Bayou.
§ 117.480 - Mermentau River.
§ 117.481 - Milhomme Bayou.
§ 117.482 - Nezpique Bayou.
§ 117.483 - Ouachita River.
§ 117.484 - Pass Manchac.
§ 117.485 - Patout Bayou.
§ 117.486 - Pearl River.
§ 117.487 - Pierre Pass.
§ 117.488 - Plaquemine Bayou.
§ 117.489 - Plaquemine Brule Bayou.
§ 117.491 - Red River.
§ 117.493 - Sabine River.
§ 117.494 - Schooner Bayou Canal.
§ 117.495 - Superior Oil Canal.
§ 117.497 - Stumpy Bayou.
§ 117.499 - Tante Phine Pass.
§ 117.500 - Tchefuncta River.
§ 117.501 - Teche Bayou.
§ 117.503 - Tensas River.
§ 117.505 - Terrebonne Bayou.
§ 117.506 - Tickfaw River.
§ 117.507 - Tigre Bayou.
§ 117.509 - Vermilion River.
§ 117.511 - West Pearl River.
§ 117.T426 - Belle River.
Wisconsin
§ 117.1081 - Black River.
§ 117.1083 - Duluth-Superior Harbor (St. Louis River).
§ 117.1085 - East River.
§ 117.1087 - Fox River.
§ 117.1089 - Manitowoc River.
§ 117.1091 - Menomonee River.
§ 117.1093 - Milwaukee, Menomonee, and Kinnickinnic Rivers and South Menomonee and Burnham Canals.
§ 117.1095 - Root River.
§ 117.1097 - Sheboygan River.
§ 117.1099 - St. Croix River.
§ 117.1101 - Sturgeon Bay.
§ 117.1103 - Upper Mississippi River.
§ 117.1105 - Wisconsin River.
§ 117.1107 - Wolf River.
Oregon
§ 117.861 - Blind Slough.
§ 117.865 - Clatskanie River.
§ 117.867 - [Reserved]
§ 117.869 - Columbia River.
§ 117.871 - Coos Bay.
§ 117.873 - Coos River.
§ 117.875 - Coquille River.
§ 117.879 - Isthmus Slough.
§ 117.881 - John Day River.
§ 117.885 - [Reserved]
§ 117.887 - Oregon Slough (North Portland Harbor).
§ 117.889 - Siuslaw River.
§ 117.891 - [Reserved]
§ 117.892 - South Slough.
§ 117.893 - Umpqua River.
§ 117.895 - Wallooskee River.
§ 117.897 - Willamette River.
§ 117.899 - Youngs Bay and Lewis and Clark River.
§ 117.T879 - xxx
§ 117.876T - Coquille River.
Maine
§ 117.521 - Back Cove.
§ 117.523 - Back River.
§ 117.525 - Kennebec River.
§ 117.527 - Kennebunk River.
§ 117.529 - Narraguagus River.
§ 117.531 - Piscataqua River.
§ 117.533 - Sheepscot River.
§ 117.535 - Taunton River.
§ 117.537 - Townsend Gut.
§ 117.T536 - Townsend Gut.
Minnesota
§ 117.661 - Duluth Ship Canal (Duluth-Superior Harbor).
§ 117.663 - Minnesota River.
§ 117.664 - Rainy River, Rainy Lake and their tributaries.
§ 117.665 - Red River of the North.
§ 117.667 - St. Croix River.
§ 117.669 - St. Louis River (Duluth-Superior Harbor).
§ 117.671 - Upper Mississippi River.
Kansas
§ 117.411 - Missouri River.
California
§ 117.140 - General.
§ 117.141 - American River.
§ 117.143 - Bishop Cut.
§ 117.145 - Burns Cutoff.
§ 117.147 - Cerritos Channel.
§ 117.149 - China Basin, Mission Creek.
§ 117.150 - Connection Slough.
§ 117.151 - Cordelia Slough (a tributary of Suisun Bay).
§ 117.153 - Corte Madera Creek.
§ 117.155 - Eureka Slough.
§ 117.157 - Georgiana Slough.
§ 117.159 - Grant Line Canal.
§ 117.161 - Honker Cut.
§ 117.163 - Islais Creek (Channel).
§ 117.165 - Lindsey Slough.
§ 117.167 - Little Potato Slough.
§ 117.169 - Mare Island Strait and the Napa River.
§ 117.171 - Middle River.
§ 117.173 - Miner Slough.
§ 117.175 - Mokelumne River.
§ 117.177 - Mud Slough.
§ 117.179 - Newark Slough.
§ 117.181 - Oakland Inner Harbor Tidal Canal.
§ 117.183 - Old River.
§ 117.185 - Pacheco Creek.
§ 117.187 - Petaluma River.
§ 117.189 - Sacramento River.
§ 117.191 - San Joaquin River.
§ 117.193 - San Leandro Bay.
§ 117.195 - Snodgrass Slough.
§ 117.197 - Sonoma Creek.
§ 117.199 - Steamboat Slough.
§ 117.201 - Sutter Slough.
§ 117.T164 - Islais Creek.
§ 117.T184 - Old River.
§ 117.T198 - Three Mile Slough
§ 117.T200 - Turner Cut.
§ 117.149-T - xxx
Texas
§ 117.951 - Arroyo Colorado River.
§ 117.953 - Brazos River (Diversion Channel).
§ 117.955 - Buffalo Bayou.
§ 117.957 - Cedar Bayou.
§ 117.959 - Chocolate Bayou.
§ 117.963 - Colorado River.
§ 117.965 - Cow Bayou.
§ 117.966 - Galveston Channel.
§ 117.967 - Greens Bayou.
§ 117.968 - Gulf Intracoastal Waterway.
§ 117.969 - Lavaca River.
§ 117.971 - Neches River.
§ 117.975 - Old Brazos River.
§ 117.977 - Pelican Island Causeway, Galveston Channel.
§ 117.979 - Sabine Lake.
§ 117.981 - Sabine River.
§ 117.983 - Sabine River (Old Channel) behind Orange Harbor Island.
§ 117.984 - San Bernard River.
§ 117.987 - Taylor Bayou.
§ 117.988 - Taylor Bayou Outfall Canal (Joint Outfall Canal (JOC)).
§ 117.989 - Trinity River.
§ 117.991 - Victoria Barge Canal.
§ 117.T966 - Pelican Island Causeway, Galveston Channel.
Pennsylvania
§ 117.901 - Chester Creek.
§ 117.903 - Darby Creek.
§ 117.904 - Delaware River.
§ 117.905 - Schuylkill River.
Illinois
§ 117.389 - Calumet River.
§ 117.391 - Chicago River.
§ 117.393 - Illinois Waterway.
§ 117.397 - Wabash River.
Arkansas
§ 117.121 - Arkansas River.
§ 117.123 - Arkansas Waterway.
§ 117.125 - Black River.
§ 117.127 - Current River.
§ 117.129 - Little Red River.
§ 117.131 - Little River.
§ 117.133 - Ouachita River.
§ 117.135 - Red River.
§ 117.137 - St. Francis River.
§ 117.139 - White River.
Michigan
§ 117.624 - Black River (South Haven).
§ 117.625 - Black River (Port Huron).
§ 117.627 - Cheboygan River.
§ 117.631 - Detroit River (Trenton Channel).
§ 117.633 - Grand River.
§ 117.635 - Keweenaw Waterway.
§ 117.637 - Manistee River.
§ 117.639 - Ontonagon River.
§ 117.641 - Pine River (Charlevoix).
§ 117.643 - Pine River (St. Clair).
§ 117.645 - River Rouge.
§ 117.647 - Saginaw River.
§ 117.651 - St. Joseph River.
§ 117.653 - St. Mary's Falls Canal.
§ 117.655 - Thunder Bay River.
Virginia
§ 117.995 - Appomattox River.
§ 117.997 - Atlantic Intracoastal Waterway, South Branch of the Elizabeth River to the Albermarle and Chesapeake Canal.
§ 117.999 - Blackwater River.
§ 117.1001 - Cat Point Creek.
§ 117.1003 - Chickahominy River.
§ 117.1005 - Chincoteague Channel.
§ 117.1007 - Elizabeth River - Eastern Branch.
§ 117.1011 - Great Wicomico River.
§ 117.1013 - Kinsale Creek.
§ 117.1015 - Mattaponi River.
§ 117.1021 - North Landing River.
§ 117.1023 - Pamunkey River.
§ 117.1025 - York River.
Vermont
§ 117.993 - Lake Champlain.
Idaho
§ 117.381 - Clearwater River.
§ 117.383 - Pend Oreille River.
§ 117.385 - Snake River.
Connecticut
§ 117.202 - Cold Spring Brook.
§ 117.205 - Connecticut River.
§ 117.207 - Housatonic River.
§ 117.209 - Mianus River.
§ 117.211 - Mystic River.
§ 117.213 - New Haven Harbor, Quinnipiac and Mill Rivers.
§ 117.215 - Niantic River.
§ 117.217 - Norwalk River.
§ 117.219 - Pequonnock River.
§ 117.221 - Saugatuck River.
§ 117.223 - Shaw Cove.
§ 117.224 - Thames River.
§ 117.225 - Yellow Mill Channel.
Rhode Island
§ 117.907 - Providence River.
Washington
§ 117.1029 - xxx
§ 117.1031 - Chehalis River.
§ 117.1035 - Columbia River.
§ 117.1037 - Cowlitz River.
§ 117.1039 - [Reserved]
§ 117.1041 - Duwamish Waterway.
§ 117.1045 - Hood Canal.
§ 117.1047 - Hoquiam River.
§ 117.1049 - Lake Washington.
§ 117.1051 - Lake Washington Ship Canal.
§ 117.1053 - Lewis River.
§ 117.1055 - Skagit River.
§ 117.1057 - Skamokawa Creek.
§ 117.1058 - Snake River.
§ 117.1059 - Snohomish River, Steamboat Slough, and Ebey Slough.
§ 117.1061 - Tacoma Harbor.
§ 117.1063 - Willapa River South Fork.
§ 117.1065 - Wishkah River.
Georgia
§ 117.351 - Altamaha River.
§ 117.353 - Atlantic Intracoastal Waterway, Savannah River to St. Marys River.
§ 117.359 - Chattahoochee River.
§ 117.361 - Flint River.
§ 117.363 - Ocmulgee River.
§ 117.365 - Oconee River.
§ 117.367 - Ogeechee River.
§ 117.369 - Satilla River.
§ 117.371 - Savannah River.
§ 117.373 - St. Marys River.
New York
§ 117.769 - Black Rock Canal.
§ 117.771 - Bronx River.
§ 117.773 - Buffalo River.
§ 117.775 - Coney Island Creek.
§ 117.779 - Eastchester Bay (Arm of).
§ 117.781 - East River.
§ 117.783 - Flushing Creek.
§ 117.785 - Genesee River.
§ 117.787 - Gowanus Canal.
§ 117.788 - Gowanus Canal.
§ 117.789 - Harlem River.
§ 117.791 - Hudson River.
§ 117.793 - Hutchinson River (Eastchester Creek).
§ 117.795 - Jamaica Bay and Connecting Waterways.
§ 117.797 - Lake Champlain.
§ 117.799 - Long Island, New York Inland Waterway from East Rockaway Inlet to Shinnecock Canal.
§ 117.800 - Mill Neck Creek.
§ 117.801 - Newtown Creek, Dutch Kills, English Kills and their tributaries.
§ 117.802 - New Rochelle Harbor.
§ 117.803 - Niagara River.
§ 117.805 - Peekskill (Annsville) Creek.
§ 117.809 - Tonawanda Creek.
§ 117.811 - Tonawanda Harbor.
§ 117.813 - Wappinger Creek.
§ 117.815 - Westchester Creek.
§ 117.783T - Erie Canal.
Missouri
§ 117.687 - Missouri River.
§ 117.689 - Osage River.
Mississippi
§ 117.675 - Back Bay of Biloxi.
§ 117.677 - Big Sunflower River.
§ 117.680 - Industrial Seaway Canal.
§ 117.681 - Old Fort Bayou.
§ 117.682 - Pascagoula River.
§ 117.683 - Pearl River.
§ 117.684 - Bayou Portage.
§ 117.685 - Tchoutacabouffa River.
§ 117.686 - Yazoo River.
§ 117.T684 - Tchoutacabouffa River.
Nebraska
§ 117.691 - Missouri River.
North Carolina
§ 117.820 - Atlantic Intracoastal Waterway (Alternate Route), Great Dismal Swamp Canal.
§ 117.821 - Atlantic Intracoastal Waterway, Albermarle Sound to Sunset Beach.
§ 117.822 - Cape Fear River.
§ 117.823 - Gallants Channel.
§ 117.824 - Neuse River.
§ 117.825 - Newport River.
§ 117.829 - Northeast Cape Fear River.
§ 117.831 - Pamlico and Tar Rivers.
§ 117.833 - Pasquotank River.
§ 117.835 - Perquimans River.
§ 117.837 - Roanoke River.
§ 117.841 - Smith Creek.
§ 117.843 - Trent River.
Delaware
§ 117.231 - Brandywine Creek.
§ 117.233 - Broad Creek.
§ 117.234 - Cedar Creek.
§ 117.235 - Chesapeake and Delaware Canal.
§ 117.237 - Christina River.
§ 117.239 - Lewes and Rehoboth Canal.
§ 117.241 - Mispillion River.
§ 117.243 - Nanticoke River.
§ 117.245 - Smyrna River.
Massachusetts
§ 117.585 - Acushnet River.
§ 117.586 - Annisquam River and Blynman Canal.
§ 117.587 - Apponagansett River.
§ 117.588 - Bass River.
§ 117.589 - Cape Cod Canal.
§ 117.591 - Charles River and its tributaries.
§ 117.593 - Chelsea River.
§ 117.595 - Danvers River.
§ 117.597 - Dorchester Bay.
§ 117.598 - Eel Pond Channel.
§ 117.599 - Fort Point Channel.
§ 117.600 - Lagoon Pond.
§ 117.601 - Malden River.
§ 117.603 - Manchester Harbor.
§ 117.605 - Merrimack River.
§ 117.607 - Mitchell River.
§ 117.609 - Mystic River.
§ 117.611 - Neponset River.
§ 117.613 - North River.
§ 117.615 - Plum Island River.
§ 117.617 - Reserved Channel.
§ 117.618 - Saugus River.
§ 117.619 - Taunton River.
§ 117.620 - Westport River - East Branch.
§ 117.621 - West Bay.
§ 117.622 - Weymouth Fore River.
New Jersey
§ 117.701 - Alloway Creek.
§ 117.702 - Arthur Kill.
§ 117.703 - Bass River.
§ 117.705 - Beaver Dam Creek.
§ 117.709 - Cheesequake Creek.
§ 117.711 - Cohansey River.
§ 117.713 - Cooper River.
§ 117.714 - Corson Inlet.
§ 117.715 - Debbies Creek.
§ 117.716 - Delaware River.
§ 117.718 - Elizabeth River.
§ 117.719 - Glimmer Glass (Debbie's Creek).
§ 117.720 - Great Channel.
§ 117.721 - Grassy Sound Channel.
§ 117.722 - Great Egg Harbor Bay.
§ 117.723 - Hackensack River.
§ 117.725 - Manantico Creek.
§ 117.727 - Manasquan River.
§ 117.729 - Mantua Creek.
§ 117.730 - Maurice River.
§ 117.731 - Mullica River.
§ 117.732 - Nacote Creek.
§ 117.733 - New Jersey Intracoastal Waterway.
§ 117.734 - Navesink River (Swimming River).
§ 117.735 - Newark Bay.
§ 117.736 - Oceanport Creek.
§ 117.737 - Oldmans Creek.
§ 117.738 - Overpeck Creek.
§ 117.739 - Passaic River.
§ 117.741 - Raccoon Creek.
§ 117.743 - Rahway River.
§ 117.745 - Rancocas Creek.
§ 117.747 - Raritan River.
§ 117.749 - Salem River.
§ 117.750 - Schellenger Creek.
§ 117.751 - Shark River (South Channel).
§ 117.753 - Ship Channel, Great Egg Harbor Bay.
§ 117.755 - Shrewsbury River.
§ 117.756 - South River.
§ 117.757 - Townsend Inlet.
§ 117.758 - Tuckahoe River.
§ 117.759 - Wading River.
§ 117.761 - Woodbridge Creek.
§ 117.731a - Mullica River.
Florida
§ 117.258 - Apalachicola River.
§ 117.261 - Atlantic Intracoastal Waterway from St. Marys River to Key Largo.
§ 117.263 - Banana River.
§ 117.265 - Bayou Chico.
§ 117.267 - Big Carlos Pass.
§ 117.268 - Billy's Creek.
§ 117.269 - Biscayne Bay.
§ 117.271 - Blackwater River.
§ 117.272 - Boot Key Harbor.
§ 117.273 - Canaveral Barge Canal.
§ 117.277 - Clearwater Pass.
§ 117.279 - Coffeepot Bayou.
§ 117.283 - Dunns Creek.
§ 117.285 - Grand Canal.
§ 117.287 - Gulf Intracoastal Waterway.
§ 117.289 - Hillsboro Inlet.
§ 117.291 - Hillsborough River.
§ 117.293 - Indian Creek.
§ 117.295 - Kissimmee River.
§ 117.297 - Little Manatee River.
§ 117.299 - Loxahatchee River.
§ 117.300 - Manatee River.
§ 117.301 - Massalina Bayou.
§ 117.303 - Matlacha Pass.
§ 117.304 - Miami Beach Channel.
§ 117.305 - Miami River.
§ 117.307 - Miami River, North Fork.
§ 117.309 - Nassau Sound.
§ 117.311 - New Pass.
§ 117.313 - New River.
§ 117.315 - New River, South Fork.
§ 117.317 - Okeechobee Waterway.
§ 117.319 - Oklawaha River.
§ 117.323 - Outer Clam Bay.
§ 117.324 - Rice Creek.
§ 117.325 - St. Johns River.
§ 117.327 - St. Marks River.
§ 117.329 - St. Marys River.
§ 117.331 - Snake Creek.
§ 117.333 - Suwannee River.
§ 117.335 - Taylor Creek.
§ 117.337 - Trout River.
§ 117.341 - Whitcomb Bayou.
§ 117.T269 - Biscayne Bay.
Alabama
§ 117.101 - Alabama River.
§ 117.103 - Bayou La Batre.
§ 117.105 - Bayou Sara.
§ 117.106 - Black Warrior River.
§ 117.107 - Chattahoochee River.
§ 117.109 - Coosa River.
§ 117.111 - xxx
§ 117.113 - Tensaw River.
§ 117.115 - Three Mile Creek.
§ 117.118 - Tombigbee River.
South Dakota
§ 117.941 - Missouri River.
Maryland
§ 117.541 - Baltimore Harbor—Patapsco River.
§ 117.543 - Bear Creek.
§ 117.547 - Bush River.
§ 117.549 - Cambridge Harbor.
§ 117.551 - Chester River.
§ 117.553 - Choptank River.
§ 117.555 - College Creek.
§ 117.557 - Curtis Creek.
§ 117.558 - Curtis Creek.
§ 117.559 - Isle of Wight (Sinepuxent) Bay.
§ 117.561 - Kent Island Narrows.
§ 117.563 - Marshyhope Creek.
§ 117.565 - Miles River.
§ 117.566 - Patapsco River - Middle Branch.
§ 117.567 - Patuxent River.
§ 117.569 - Pocomoke River.
§ 117.570 - Sassafras River.
§ 117.571 - Spa Creek.
§ 117.573 - Stoney Creek.
§ 117.575 - Susquehanna River.
§ 117.577 - Weems Creek.
§ 117.579 - Wicomico River (North Prong).
New Hampshire
§ 117.697 - Hampton River.
§ 117.699 - Little Harbor.
§ 117.700 - Piscataqua River.
Indiana
§ 117.400 - XXX
§ 117.401 - Trail Creek.
§ 117.403 - Wabash River.
Rhode Island [Reserved]
Iowa
§ 117.407 - Missouri River.
Ohio
§ 117.847 - Ashtabula River.
§ 117.848 - Cleveland Harbor.
§ 117.849 - Muskingum River (Zanesville Canal).
§ 117.850 - Black River.
§ 117.851 - Portage River.
§ 117.853 - Sandusky Bay.
§ 117.855 - Maumee River.
Tennessee
§ 117.943 - Cumberland River.
§ 117.945 - Hatchie River.
§ 117.947 - Obion River.
§ 117.949 - Tennessee River.
South Carolina
§ 117.911 - Atlantic Intracoastal Waterway, Little River to Savannah River.
§ 117.913 - Ashepoo River.
§ 117.915 - Ashley River.
§ 117.917 - Battery Creek.
§ 117.921 - Broad River.
§ 117.923 - Congaree River.
§ 117.925 - Cooper River.
§ 117.927 - Coosaw River (Whale Branch).
§ 117.929 - Durham Creek.
§ 117.933 - Pee Dee River.
§ 117.935 - Rantowles Creek.
§ 117.936 - Savannah River.
§ 117.937 - Stono River, mile 11.0 at Johns Island, SC.
§ 117.938 - Waccamaw River.
§ 117.939 - Wando River.
§ 117.T940 - Stono River, mile 11.0 at Johns Island, SC.
Appendix A to Part 117 - Drawbridges Equipped with Radiotelephones