Fort Jackson (Louisiana)

Fort Jackson (Louisiana). Fort Jackson is a historic masonry fort located on the western bank of the Mississippi River, approximately 70 miles south of New Orleans in Plaquemines Parish. Constructed following the War of 1812, it was a key component of the Third System of US fortifications and played a pivotal role in the American Civil War. Today, the fort is a designated National Historic Landmark and is operated as a museum and historic site.

History

The site's strategic importance was recognized early, with earlier fortifications like Fort Bourbon existing nearby during the Spanish colonial period. The decision to build a permanent fortification was solidified after the War of 1812, which highlighted the vulnerability of New Orleans to naval attack. The fort was named for Andrew Jackson, the hero of the Battle of New Orleans. Its most significant historical chapter began with the secession of Louisiana and the outbreak of the American Civil War, when it was seized by Confederate forces. It formed the southern anchor of the Confederate defenses of the Mississippi River, alongside the older Fort St. Philip on the opposite bank. In April 1862, a Union Navy squadron under Flag Officer David Farragut forced its way past the forts during the famed Battle of Forts Jackson and St. Philip, leading to the capture of New Orleans. Following a mutiny and bombardment, the fort's Confederate garrison, commanded by Brigadier General Johnson K. Duncan, surrendered to Union Army forces under Commander David Dixon Porter.

Design and construction

Fort Jackson is a classic example of a Third System fort, designed by the United States Army Corps of Engineers. Its distinctive pentagonal shape, with five bastions, was intended to allow for interlocking fields of fire against assaulting infantry. The structure is primarily built of brick with thick, earthen parapets designed to absorb artillery fire. A defining feature is the extensive, water-filled moat that surrounds the fort, which was fed directly from the Mississippi River. Construction began in 1822 and was largely completed by 1832, though modifications continued for decades. The fort was designed to mount dozens of heavy seacoast artillery pieces, including Rodman and Columbiad cannons, in both casemated and barbette positions to engage enemy warships on the river.

Military service

After its completion, Fort Jackson was garrisoned intermittently by United States Army troops during periods of tension but saw no combat until the Civil War. During the war, it was heavily armed by the Confederacy and was the scene of intense bombardment by Farragut's mortar schooners and the subsequent fleet action. Following its capture, it was used as a Union prison and staging ground for operations, including the Siege of Port Hudson. After the war, it returned to its role as a minor coastal artillery post but was largely obsolete by the end of the 19th century due to advances in naval artillery and armor. It was officially abandoned by the War Department in 1922 and subsequently sold to local authorities.

Preservation and current status

The fort was declared a National Historic Landmark in 1960 for its significance in Civil War naval history. For many years, it was owned and operated by the Plaquemines Parish government as a public historic site and museum. The fort has suffered damage from hurricanes, including Hurricane Katrina in 2005 and Hurricane Isaac in 2012, which flooded the property and caused structural deterioration. Preservation efforts have been ongoing, involving organizations like the Louisiana Office of Cultural Development and the National Park Service. While some areas remain stabilized ruins, the main fort structure is accessible, and the site features interpretive displays, surviving artillery pieces, and hosts annual reenactments. Its future preservation is a focus of local historical advocacy. Category:Forts in Louisiana Category:National Historic Landmarks in Louisiana Category:American Civil War forts Category:Buildings and structures in Plaquemines Parish, Louisiana