"Eads had to succeed in the face of conventional wisdom which doomed him to disaster. Entrenched authorities not only completely dismissed his theories, but pointed to the indifferent European experiences with what he proposed."
- ASCE Landmark Nomination Proposal, 1982
Eads South Pass Navigation Works
The mighty Mississippi River has long been a valuable lifeline for the country's transportation and commerce. In the late 1800s, though, the mouth of the ever-changing Mississippi was silting up, creating areas as shallow as eight feet. Eads South Pass Navigation Works opened a channel at the mouth of the Mississippi River that allowed large boats easy access to the Port of New Orleans.
James Buchanan Eads created a self-scouring channel through the South Pass by constructing wing dikes, perpendicular to current flow, which forced the current into a narrower cross-section. The current scoured the river bottom, pushing the silt far out into the deep Gulf waters. This created a nearly permanent channel that required only periodic dredging to maintain navigability.
The channel is no longer maintained for deep-draft traffic due to a decline in maritime shipping. But the principles which guided construction on the South Pass made possible the high performance of the Southwest Pass, currently the predominant seaward approach to the ports of New Orleans and Baton Rouge.