Editing Interstate 10 (section)

=== Louisiana ===
{{Main|Interstate 10 in Louisiana}}
In [[Lake Charles, Louisiana|Lake Charles]], a {{convert|13|mi|km|adj=on}} loop route signed as [[Interstate 210 (Louisiana)|I-210]] branches off of I-10 and goes through the southern portion of the city. In [[Lafayette, Louisiana|Lafayette]], it serves as the southern terminus for [[Interstate 49|I-49]]. Shortly afterward, there is an {{convert|18|mi|km|adj=on}} stretch of elevated highway between Lafayette and Baton Rouge known as the [[Atchafalaya Swamp Freeway]], as it goes over the [[Atchafalaya River]], across the [[Atchafalaya Basin Bridge]], and the adjacent swamps. It crosses the [[Mississippi River]] at the [[Horace Wilkinson Bridge]] in [[Baton Rouge, Louisiana|Baton Rouge]], where the eastbound lanes are the only portion of I-10 that is essentially one lane. 

After crossing the Horace Wilkinson Bridge, two lanes from [[Interstate 110 (Louisiana)|I-110]] south merge with two lanes I-10 east into three lanes with one of the eastbound lanes quickly becoming an exit only lane. After this, the highway is back to four lanes approaching the I-10/[[Interstate 12|I-12]] split. I-12 links Baton Rouge to [[Slidell, Louisiana|Slidell]] and bypasses I-10's southward jog through New Orleans by remaining north of [[Lake Pontchartrain]]. On this route, I-10 serves as the southern terminus for I-55 in [[LaPlace, Louisiana|LaPlace]] and crosses over a portion of Lake Pontchartrain on the [[I-10 Bonnet Carré Spillway Bridge]]. 

In [[New Orleans]], a stretch of I-10 from the I-10/I-610 Junction near the [[Orleans Parish, Louisiana|Orleans]]–[[Jefferson Parish, Louisiana|Jefferson]] parish line to the [[U.S. Route 90|US&nbsp;90]]/[[U.S. Route 90 Business (New Orleans, Louisiana)|US&nbsp;90 Business]] (US&nbsp;90 Bus.) junction is known as the [[Pontchartrain Expressway]]. A dip near the I-10/I-610 junction to travel under a railroad track is one of the lowest points in [[New Orleans]] and is highly susceptible to flooding. Buildups of rainwater dozens of feet deep (several meters) are commonplace during hurricanes. Near [[Slidell, Louisiana|Slidell]], I-10 serves as the eastern terminus of I-12 and the southern terminus of I-59; turning east to the [[Mississippi]] state line. The highway is known as the Stephen Ambrose Memorial Highway, named after [[Stephen E. Ambrose|the historian and writer]], until the state line.

[[Interstate 310 (Louisiana)|I-310]] and [[Interstate 510|I-510]] are the built sections of what was slated to be [[Interstate 410 (Louisiana 1969)|I-410]], which would have acted as a southern bypass of New Orleans. They function as spur routes serving lower density or suburban areas west and east of New Orleans respectively. [[Interstate 610 (Louisiana)|I-610]] is a shortcut from the eastern to western portion of New Orleans avoiding I-10's detour into the [[New Orleans Central Business District]].