![]() Now a historic engineering landmark, it has served its purpose well for many decades. The Port of New Orleans completed the existing lock in 1921. It connects the Mississippi River, the Gulf Intracoastal Waterway (GIWW), the Mississippi River-Gulf Outlet (MRGO), the Industrial Canal (also known as the Inner Harbor Navigation Canal), and Lake Pontchartrain. The existing Industrial Canal Lock is a vital link in the nation's inland waterway navigation system. ![]() The overhead power cables across the canal near the Paris Road Bridge have a clearance of 170 ft. is located about 4.3 miles east of the junction with the Inner Harbor Navigation Canal. The Paris Road Bridge, a fixed bridge with a clearance of 135 ft. One bridge and two cables cross the Mississippi River-Gulf Outlet Canal below the junction with the Inner Harbor Navigation Canal at New Orleans. Long Bridge, a combined highway and railroad bridge crossing the river 9.6 miles above Canal Street, has a clearance of 135 ft for a channel span width of 500 ft. A high level fixed highway bridge connecting Algiers and New Orleans, 0.6 mile above Canal Street, has a clearance of 150 ft over a central 750-ft width. There are no bridges or cables across the Mississippi River below New Orleans, but two bridges cross the river at New Orleans. Sill depth at the lock is 31.5 ft at low water. Final access to the Mississippi River is via a 640-ft lock at New Orleans. The Federal project provides for channel depths ranging from 36 to 38 ft. A second route to the Port of New Orleans is via the Mississippi River-Gulf Outlet Canal, a 66-mile channel that extends northwest from deep water in the Gulf of Mexico to the Inner Harbor Navigation Canal at New Orleans. The project further provides for a 40-ft channel from Head of Passes to New Orleans. A Federal project provides for a 40-ft channel over the bar and through Southwest Pass, and a 17-ft channel over the bar and through South Pass, to Head of Passes. The first, and primary, route is via the Mississippi River, which may be accessed by ships using Southwest Pass or South Pass. The Port of New Orleans can be reached from the Gulf of Mexico by two main routes. An elaborate levee system has been constructed by the US Army Corps of Engineers to protect low lying areas from flooding. The banks of the Mississippi River comprise the highest terrain in the area, with much of the developed land area along the river actually being below sea level. Head of Passes is 20 miles above the seaward entrance to Southwest Pass. The lower and upper limits of the Port are approximately 81 and 115 miles above Head of Passes, a common reference point on the Mississippi River which is located at the junction of Southwest Pass and South Pass, the two main channels leading to the Mississippi River. ![]() The Port of New Orleans is located on both banks of the Mississippi River in the southeast section of Louisiana. The publication also provides details of 55 diesel-operated tugs, ranging from 750 to 4,000 horsepower, used for docking and undocking vessels on the Mississippi River. 20 published in 1981 by the US Army Corps of Engineers. #PORT OF NEW ORLEANS ON MAP SERIES#Complete details of berthing facilities at the Port of New Orleans are to be found in Port Series No. ![]() Zero on the Carrollton river gage (near mile 103) is Mean Sea Level.Īlongside depths and deck heights for facilities on the Inner Harbor Navigation Canal, the Mississippi River-Gulf Outlet Canal, and adjacent waterways have little uniformity. The average dates of high-river stage and low-river stage occur in April and October respectively. At New Orleans the extreme difference between high and low stages of the river is 20 ft with the mean difference near 14 ft. The primary reason for the unusually high deck heights is the variation in water levels of the river. Some alongside depths and deck heights are less. Alongside depths on the Mississippi River facilities generally equal or exceed 30 ft. ![]() Approximately one-half of the deep-draft facilities are for public use and operated by the Board of Commissioners of the Port of New Orleans. In addition, over 100 additional facilities for small vessels and barges are located on adjacent waterways. The Port of New Orleans has more than 180 piers and wharves located on both sides of the Mississippi River, the Inner Harbor Navigation Canal, and the Mississippi River-Gulf Outlet Canal. River barge traffic is particularly evident as New Orleans is the southern terminus of the Mississippi River navigation system. It is an extremely busy shipping terminal that handles vessels with drafts to 40 ft as well as a multitude of smaller vessels engaged in a variety of marine transportation and service activities. New Orleans is the largest port in the United States and the third largest in the world. ![]()
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