Interstate 59 in Mississippi

Interstate 59 (I-59) is a part of the Interstate Highway System that runs 445.23 miles (716.53 km) from Slidell, Louisiana, to just outside of Wildwood, Georgia. In the U.S. state of Mississippi, I-59 travels 171.72 miles (276.36 km) from the Louisiana state line south of Nicholson northward to the Alabama state line northeast of the city of Meridian. Other cities it connects to include Picayune, Hattiesburg, and Laurel. Outside of these cities, however, I-59 is a largely rural road, providing access to other civilized areas via U.S. and state highways. Continuing from Louisiana, I-59 parallels and even shares a few concurrencies with the older U.S. Route 11 (US 11) corridor for its entire route, and it has largely supplanted that route as a major highway for long-haul traffic. At Meridian, I-59 meets I-20, and the two routes are cosigned for the remainder of their length through the state.

Of the four states which I-59 passes through, the segment in Mississippi is the second-longest. I-59 was signed into the Interstate Highway System in 1960, with the first segment of it being a small section from the Louisiana state line to Picayune, then from Hattiesburg to Laurel, built in 1963. Unfinished segments of the highway were later completed through incremental extensions and bids, and the highway was entirely finished by 1968.