Editing Interstate 12 (section)

===Hammond to Slidell===
East of Hammond are two rural exits in southeastern Tangipahoa Parish: [[Louisiana Highway 3158|LA&nbsp;3158]] (Airport Road) to [[Hammond Northshore Regional Airport]] and [[Louisiana Highway 445|LA&nbsp;445]] to [[Robert, Louisiana|Robert]].

Just after crossing into [[St. Tammany Parish, Louisiana|St. Tammany Parish]], I-12 curves to the southeast and begins to parallel the North Shore of Lake Pontchartrain. An interchange with [[Louisiana Highway 1077|LA&nbsp;1077]] serves the town of [[Madisonville, Louisiana|Madisonville]] to the south. The following exit, an interchange with [[Louisiana Highway 21|LA&nbsp;21]], also connects to Madisonville as well as the parish seat of [[Covington, Louisiana|Covington]] to the north. Immediately before crossing the [[Tchefuncte River]], an exit to Pinnacle Parkway and East Brewster Road serves the growing shopping area east of LA&nbsp;21.

{{convert|2|mi|km|spell=In}} east of the bridge, I-12 passes through an interchange with [[U.S. Route 190 in Louisiana|US&nbsp;190]] between Covington and [[Mandeville, Louisiana|Mandeville]]. This section of US&nbsp;190 serves as St. Tammany Parish's busiest north–south thoroughfare, connecting Covington and surrounding points with the [[Lake Pontchartrain Causeway]], a {{convert|24|mi|km|-long|adj=mid}} bridge leading to New Orleans. Further exits in St. Tammany Parish west of [[Slidell, Louisiana|Slidell]] include [[Louisiana Highway 59|LA&nbsp;59]] to Mandeville and [[Abita Springs, Louisiana|Abita Springs]], [[Louisiana Highway 1088|LA&nbsp;1088]] to [[Louisiana Highway 36|LA&nbsp;36]], and [[Louisiana Highway 434|LA&nbsp;434]] to [[Lacombe, Louisiana|Lacombe]].<ref name="GMaps"/><ref name="D62 2012"/><ref name="P52W 2012">{{cite map |publisher=Louisiana Department of Transportation and Development |title=St. Tammany Parish (West Section) |url=http://www.dotd.la.gov/planning/mapping/Parish%20Maps/St_Tammany_West.pdf |archive-url=https://web.archive.org/web/20120829234950/http://www.dotd.la.gov/planning/mapping/Parish%20Maps/St_Tammany_West.pdf |url-status=dead |archive-date=August 29, 2012 |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 }}</ref>

I-12 passes through an interchange with Airport Drive {{Convert|6.3|mi|km}} east of the Lacombe exit, which connects to [[Slidell Airport]] due north. At this exit, I-12 enters the northern edge of Slidell. An interchange with [[U.S. Route 11 in Louisiana|US&nbsp;11]] connects to the downtown area. Less than {{convert|2|mi|km|spell=in}} later, I-12 reaches its eastern terminus at a major interchange with I-10 and [[Interstate 59 in Louisiana|I-59]] at the northeast corner of town. From this interchange, I-10 heads southwest toward New Orleans and east toward [[Bay St. Louis, Mississippi]], while I-59 heads north toward [[Hattiesburg, Mississippi]].<ref name="GMaps"/><ref name="D62 2012"/><ref name="P52E 2012">{{cite map |publisher=Louisiana Department of Transportation and Development |title=St. Tammany Parish (East Section) |url=http://www.dotd.la.gov/planning/mapping/Parish%20Maps/St_Tammany_East.pdf |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 |archive-date=August 29, 2012 |archive-url=https://web.archive.org/web/20120829235547/http://www.dotd.la.gov/planning/mapping/Parish%20Maps/St_Tammany_East.pdf |url-status=dead }}</ref>