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Interstate 10 in Louisiana
Totally Explained
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Everything about Interstate 10 In Louisiana totally explainedInterstate 10, a major transcontinental Interstate Highway in the Southern U.S., runs across the southern part of the U.S. state of Louisiana. It passes through New Orleans and Baton Rouge as well as through smaller cities such as Lake Charles and Lafayette. It dips south of Lake Pontchartrain to serve New Orleans, while Interstate 12 provides a shortcut to the north of the lake for through traffic.
From Texas to Lafayette, I-10 parallels the older U.S. Route 90 corridor. From Lafayette, the highway heads east-northeast toward Baton Rouge via the Atchafalaya Swamp Freeway, an 18.2-mile (nearly 30 km) bridge across the Atchafalaya River and its accompanying swamp. Between the two cities, I-10 parallels U.S. Route 190, which runs from Opelousas to Baton Rouge.
In the Capital City, U.S. 190 continues east alongside Interstate 12 to Hammond and Slidell while I-10 turns southeastward and parallels U.S. Route 61 ( Airline Highway) to New Orleans. In the Crescent City, I-10 rejoins U.S. 90 (and later U.S. Route 11) as it heads toward Slidell. In Slidell, U.S. 11 continues northeastward toward Hattiesburg, Mississippi while I-10 and U.S. 90 turn eastward toward coastal Mississippi.
Major bridges on I-10 in Louisiana include the Sabine River bridge (ca. 1952, replaced 2003), the Calcasieu River Bridge (1952), the Atchafalaya Swamp Freeway (1973), the Horace Wilkinson Bridge over the Mississippi River (1968), the Bonnet Carré Spillway bridge (ca. 1972), the Industrial Canal Bridge (ca. 1960), the Twin Spans (1965), and the Pearl River bridge (ca. 1970).
Major cities
Bolded cities are officially-designated control cities for signs.
Auxiliary routes
Interstate 110 is a spur northward through downtown Baton Rouge toward the northern part of the city. It wasn't in the original plans, but was added in the 1960s to replace the cancelled Interstate 410.
Interstate 210 is a bypass around the south side of Lake Charles. It was added in September 1955.
Interstate 310 is a spur from I-10 west of New Orleans south to U.S. Highway 90 (future Interstate 49). It was part of a longer Interstate 410 from 1969 to 1977.
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