Somewhere off the Norfolk waterfront, in the middle of the Elizabeth River, floats a red lighted buoy. It looks like every other channel marker in the harbor. Thousands of people walk past it every week without a glance. That buoy is where the federal government starts counting.
The ICW mileage is zeroed at 36°50.9′N., 76°17.9′W., off the foot of West Main Street, Norfolk, VA.
NOAA, United States Coast Pilot 4
That is Mile Zero. Every mile marker on more than a thousand miles of protected waterway, all the way down to the Florida Keys, counts up from a point you can see from downtown Norfolk. There is no monument. No obelisk, nothing like Key West’s Southernmost Point. America’s most-traveled recreational waterway begins at a piece of floating steel — and almost nobody standing on the seawall knows it is there.
What “Mile Zero” actually means
The waterway does not end here. The ICW carries on north of Norfolk — up the Chesapeake, through the C&D Canal, along the New Jersey shore. What stops at Norfolk is the counting. The Army Corps of Engineers’ federal project for the Atlantic Intracoastal Waterway has its northern terminus here, so this is where the chart mileage begins. Norfolk is not the end of the waterway. It is the end of the arithmetic.
And the miles are not nautical. Everywhere else in American coastal navigation, distance is measured in nautical miles. The ICW is measured in statute miles — land miles — to match the small-craft charts the boats on this route actually use. It is the one saltwater highway in the country measured the way a road is.
How far? It depends what you are counting to. Roughly 1,100 miles to Miami, where most people stop. 1,244 statute miles to Key West, the full length of the mileage scale. And the Atlantic route is only half of it — with the Gulf section, the whole system runs about 3,000 miles, from Massachusetts to Brownsville, Texas.
It was Thomas Jefferson’s Treasury Secretary’s idea
In 1808, Albert Gallatin sent Congress his Report on Roads and Canals, proposing about $20 million of federal infrastructure. Among it: a chain of canals cut through the coastal lowlands to make one continuous protected passage down the Atlantic seaboard, safe from storms and safe from enemy navies. He named the Great Dismal Swamp as one of the places to cut.
Jefferson thought it was unconstitutional. The War of 1812 finished the argument. Not one of Gallatin’s coastal canals was federally built. The Intracoastal Waterway is one of the few pieces of that 1808 vision the government eventually did build — starting about 130 years later.
The oldest ditch in America
Private money got there first, through the worst terrain on the East Coast. The idea belonged to William Byrd II, who crossed the Great Dismal Swamp in 1728 surveying the Virginia–North Carolina line. George Washington reached the same conclusion after visiting in May 1763 and joined the speculators of the Dismal Swamp Company that year.
Washington is where most retellings go wrong. He promoted the canal and invested in it — but he sold his shares in 1795, two years after digging began. He did not build it.
The men who built it were enslaved. They cut the Dismal Swamp Canal by hand, advancing roughly ten feet a day through peat and cypress. Virginia authorised it in 1787, North Carolina in 1790, excavation began in 1793, and it opened in 1805. The Army Corps of Engineers calls it the oldest continually operating artificial waterway in the United States.
Moses Grandy bought his freedom three times on this water
He was born enslaved in Camden County, North Carolina, around 1786, and became a captain of canal boats on the Dismal Swamp Canal. Working that water, Grandy earned money — and used it to buy himself. He paid $600 to a man named James Grandy, who took the money and sold him anyway. He paid $600 again, to a man named Trewitt, with the same result. The third time, repaid over three years of canal work, finally held.
He could neither read nor write, so he dictated his account to the British abolitionist George Thompson. Narrative of the Life of Moses Grandy was published in 1843. In it he describes goods moving from Norfolk to Elizabeth City by the canal during the War of 1812 — inland, past the British blockade, which was precisely the strategic case Gallatin had argued five years earlier. North Carolina erected a state highway marker to him in 2025.
The canal that beat it
The Dismal Swamp Canal had seven sets of locks and never enough water over the sills. In 1850 a Norfolk businessman named Marshall Parks — whose father had managed the Dismal Swamp Canal, so he knew exactly where it failed — chartered a company to cut a better one.
The Albemarle and Chesapeake Canal opened on 9 January 1859. Dug by steam dredge rather than by hand, deeper, and with one lock against the Dismal Swamp’s seven. It took the traffic and never gave it back. Then the government bought them both — the Albemarle and Chesapeake on 30 April 1913 for $500,000, and the Dismal Swamp on 30 March 1929 for exactly the same $500,000.
Two roads south, and boaters still argue about them
Leave Mile Zero heading south and you have a choice seven miles later. At Mile 7.1, at Deep Creek, the waterway forks. Bear right for the Dismal Swamp Canal. Carry straight on for the Virginia Cut, the old Albemarle and Chesapeake line. They do not meet again until Albemarle Sound, about eighty miles later.
The Virginia Cut is the practical choice: maintained to 12 feet, one lock, and it carries most of the traffic — over 12,000 vessels a year through the Great Bridge Lock alone. The Dismal Swamp carries about 2,000 recreational boats a year, is maintained to six feet, and holds the shallowest water on the entire Atlantic ICW. It is also, by common agreement among the people who take it, unlike anything else on the East Coast.
And then there is the first twenty miles. Between Mile Zero and Great Bridge a boat passes eleven bridges and a lock, only four of which give sixty-five feet of clearance, while sharing the channel with naval and commercial traffic. It explains why Norfolk is where crews stop and steady themselves before they start.
The snowbirds
Every autumn, boats come down the Chesapeake heading for Florida — leaving after the Annapolis show in October, aiming to be south before hurricane season officially ends on 30 November. Every spring they come back the other way. They stack up here. Crawford Bay, just west of the buoy, is a well-known waiting anchorage while crews watch the forecast.
Three transient marinas sit within sight of Mile Zero — Waterside on the Norfolk side, Tidewater and Ocean Yacht in Portsmouth’s Olde Towne — and the Elizabeth River Ferry runs between them, so a crew can tie up on one bank and provision, eat and wander on the other.
Two stories from the swamp
In 1983, two men in Elizabeth City named Fred Fearing and Joe Kramer walked down to the docks and handed roses from Kramer’s garden to the women aboard the boats coming off the Dismal Swamp route. It became a standing wine-and-cheese party on any night five or more boats were in. Kramer died in 1987 and his rose bushes were moved to the waterfront, where they still grow. The weatherman Willard Scott gave them a golf cart. President Clinton wrote to praise them in 1999. Volunteers still meet the boats.
In November 1894, a twenty-year-old Robert Frost — rejected by the woman he wanted to marry and, by his own later telling, in despair — took a boat to Norfolk and walked south along the road beside the Dismal Swamp Canal until the road ran into the water. A lockkeeper took him in and got him to Elizabeth City. He was three weeks getting home, and he was still writing about it sixty years later.
The quiet war record
During the Second World War, German submarines sank merchant ships within sight of American beaches. The Intracoastal Waterway became strategically valuable for the obvious reason: a barge moving inland cannot be torpedoed. At twelve feet of project depth the ICW could carry barge and small coastal traffic, not tankers — it did not save coastal shipping, but it gave a great deal of it somewhere safe to go. Which is exactly what Gallatin had argued for in 1808, and what Moses Grandy had described in 1812.
Where to stand and see it
The buoy is out in the channel, so you will not read it from shore. But there is one place on land that tells you it is there. In Town Point Park, at Waterside Drive and Boush Avenue, a Norfolk Heritage Cannonball Trail marker titled “Atlantic Intracoastal Waterway” begins:
Off this point in the Elizabeth River is the zero mile buoy marking the beginning of the Atlantic Intracoastal Waterway.
Cannonball Trail marker, Town Point Park
It is a short walk from the cruise terminal, it is free, and it is outdoors. Stand at it, look out at the water, and you are looking at the start of a thousand miles.
Then take the ferry. It is two dollars, cash, and they do not give change — bring singles. From the middle of the river you get the only view that makes sense of the whole thing: the working half of the harbor on one side, the remembering half on the other.
Go and stand where the counting starts
Mile Zero: The Crossing is a self-guided treasure hunt that works both banks of the Elizabeth River, with the two-dollar ferry ride in the middle. It plays on your own phone, at your own pace, no app to download. $24 covers your whole team.