Editing Interstate 59 (section)

===Mississippi===
{{Main article|Interstate 59 in Mississippi}}
{{see also|Interstate 20 in Mississippi}}
[[File:I-20 East I-59 North - US11 US80 MS19 To US45 - Red Hot Meridian (26953469657).jpg|thumb|left|I-59 cosigned with I-20 in Mississippi; other cosigned routes are listed on the shields of the next sign]]
In Mississippi, I-59 continues to run parallel with US&nbsp;11, traversing mainly rural areas but going through or bypassing the towns of [[Picayune, Mississippi|Picayune]], [[Poplarville, Mississippi|Poplarville]], [[Hattiesburg, Mississippi|Hattiesburg]], [[Moselle, Mississippi|Moselle]], [[Ellisville, Mississippi|Ellisville]], [[Laurel, Mississippi|Laurel]], and [[Meridian, Mississippi|Meridian]].

For its length in Mississippi, I-59 either [[concurrency (road)|runs concurrently]] with, or runs close to, [[U.S. Route 11 in Mississippi|US&nbsp;11]]. Between the towns of Pearl River and Picayune, US&nbsp;11 travels concurrent with I-59. The highway also has concurrencies with [[U.S. Route 98 in Mississippi|US&nbsp;98]] in Hattiesburg; [[Mississippi Highway 42]] (MS&nbsp;42) just north of Hattiesburg; [[U.S. Route 84 in Mississippi|US&nbsp;84]] and [[Mississippi Highway 15|MS&nbsp;15]] in Laurel; and [[U.S. Route 80 in Mississippi|US&nbsp;80]], US&nbsp;11, and [[Mississippi Highway 19|MS&nbsp;19]] in the Meridian area.{{citation needed|date=October 2023}}

A notoriously sharp [[Reverse curve|S-curve]], at milepost&nbsp;96 in Laurel, was the subject of a large reconstruction project that began in 2006. Those sharp curves were the legacy of an overpass over the [[Southern Railway (U.S.)|Southern Railway]] on a town bypass with design dating from before the Interstate Highways, and they featured a {{convert|40|mi/h|km/h|adj=on}} speed limit, one of the lowest anywhere on the Interstate Highway System. This work was completed in 2009.<ref>{{cite news |url = https://www.wdam.com/story/11113804/laurel-s-curve-renamed-reopened/ |title = Laurel S-Curve renamed, reopened |last = Richardson |first = Ontario |publisher = WDAM-TV |date = September 11, 2009 |access-date = September 27, 2020 }}</ref>

Just west of Meridian, I-20 joins I-59 and these two highways continue together for {{convert|153|mi|km}}, across the border with [[Alabama]] to and through Birmingham. The exit numbers are given as those of I-59.{{citation needed|date=October 2023}}

At 4:00&nbsp;pm on August&nbsp;27, 2005, for the first time in its history, the southbound lanes of I-59 were temporarily redirected northward to accommodate evacuation for [[Hurricane Katrina]]. This was a previously agreed to joint plan by the states of [[Mississippi]] and [[Louisiana]] called [[contraflow lane reversal]]. The program began at the Louisiana–Mississippi state line and continued {{convert|21|mi|km}} north to [[Poplarville, Mississippi|Poplarville]].{{citation needed|date=October 2023}}