Because of faulty reconnaissance, Burnside did not know that fords were nearby where his men could have waded across the stream. Instead, the Federal plan of attack forced the advancing columns to pile into this funnel and storm across the bridge.
Soon after 9 a.m., the Federal divisions began to assault the bridge. One after another, their gallant charges were broken by deadly short-range fire from Toombs’ Georgians. By noon, when the agony at the Sunken Road was reaching its highest pitch, and despite repeated orders from McClellan to get across Antietam Creek at all costs, the bottleneck at the bridge was still unbroken.
Meanwhile, Brig. Gen. Isaac Rodman’s Union division had moved slowly downstream from the bridge in search of a crossing. Rounding a sharp bend in the creek, nearly a mile south, scouts came upon shallow water at Snavely’s Ford. Late in the morning Rodman crossed the stream and began to drive against the right flank of the Georgians guarding the bridge. About the same time, Col. George Crook’s scouts located a ford a few hundred yards above the bridge; there he sent his brigade across. Capt. Seth J. Simonds’ battery was placed in position to command the bridge.
Maj. Gen. Ambrose E. Burnside. From photograph by Brady or assistant. Courtesy, Library of Congress.
Burnside or Lower Bridge shortly after the battle. Toombs’ men were on the bluff in background. Courtesy, Library of Congress.
Burnside’s men storm the bridge. From wartime sketch by Forbes.
