Interstate 12 86408 225205205 2008-07-12T13:19:57Z 75.47.152.237 {{Infobox road |state=LA |type=I |route=12 |map=Interstate 12 map.png |maint=[[LDOT]] |length_mi=85.59 |length_round=2 |length_ref=<ref name="IG">{{cite web|publisher=Interstate Guide|url=http://www.interstate-guide.com/i-012.html|title=Interstate 12 @ Interstate-Guide.com|accessdate=2008-02-15}}</ref> |established= |direction_a=West |terminus_a={{Jct|state=LA|I|10}} in [[Baton Rouge, Louisiana|Baton Rouge]] |junction={{Jct|state=LA|US|61}} in [[Baton Rouge, Louisiana|Baton Rouge]]<br>{{Jct|state=LA|I|55}} near [[Hammond, Louisiana|Hammond]]<br>{{Jct|state=LA|US|190}} near [[Covington, Louisiana|Covington]] |direction_b=East |terminus_b={{Jct|state=LA|I|10|I|59}} near [[Slidell, Louisiana|Slidell]] |previous_type=LA |previous_route=11 |next_type=LA |next_route=12 |commons=category }} '''Interstate 12''' (I-12) is an [[List of intrastate Interstate highways|intrastate]] [[interstate highway]] located entirely within the state of [[Louisiana]]. I-12 starts in [[Baton Rouge, Louisiana|Baton Rouge]] at [[Interstate 10]], and travels along the North Shore of [[Lake Pontchartrain]] before ending at the intersection of [[Interstate 10]] and [[Interstate 59]] near [[Slidell, Louisiana|Slidell]]<ref name="Google">{{cite web|publisher=[[Google Maps]]|url=http://maps.google.com/maps?f=d&hl=en&geocode=9745900613042113492,30.418080,-91.107920&saddr=I-12+E+%4030.418080,+-91.107920&daddr=30.305762,-89.740105&mra=mi&mrsp=1,0&sz=16&sll=30.307911,-89.740019&sspn=0.008373,0.014462&ie=UTF8&ll=30.332583,-90.491638&spn=1.0715,1.851196&z=9|title=Overview Map of I-12|accessdate=2008-02-15}}</ref>. In 1993, the state legislature renamed Interstate 12 as the "[[Republic of West Florida]] Parkway". In 2003, signs identifying the highway's official name and bearing the flag of the [[Republic of West Florida]] were erected by the [[Louisiana Department of Transportation and Development]] in order to highlight the unique history of Louisiana's [[Florida Parishes]]. I-12 is six lanes from its western terminus until Exit 7 (O'Neal Lane) at which point it becomes a four-lane highway to its eastern terminus. The highway is relatively short for a mainline route at only {{convert|85|mi}}. While Interstates [[Interstate 19|19]], [[Interstate 66|66]], [[Interstate 97|97]] and the partially-completed [[Interstate 99]] are all shorter, none of these have two termini with the same route, much less within the same state (I-99 will eventually extend into [[New York]]). Compare the length of I-12 to that of the {{convert|73.5|mi|adj=on}} [[Interstate 295 (Delaware-New Jersey)|I-295]] in New Jersey and Delaware, or the {{convert|72.8|mi|adj=on}} [[Interstate 405 (California)|I-405]] in California, both of which are auxiliary Interstate highways. == Route description == Most of the distance from Baton Rouge to Slidell is pine trees on both side of the interstate, and the only breaks are for the small cities along the I-12 corridor. {| class="infobox" width="230px" !style="background: #ccf;"|<big>Major cities</big><br><small>'''Bolded cities''' are officially-designated [[control city|control cities]] for signs</small> |- | * '''[[Baton Rouge, Louisiana|Baton Rouge]]''' (westbound) * '''[[Hammond, Louisiana|Hammond]]''' * '''[[Slidell, Louisiana|Slidell]]''' (eastbound) |} {{Expand-section|date=June 2008}} ==History== With major damage to the [[I-10 Twin Span Bridge]] across [[Lake Pontchartrain]] from [[Hurricane Katrina]], I-12 was temporarily ''functioning'' as I-10. On [[October 14]], [[2005]], the eastbound span of I-10 over Lake Pontchartrain was reopened to two-way traffic. The westbound span of I-10 reopened on [[January 6]], [[2006]], with speed, weight and size restrictions, relieving I-12 of much of the congestion that was clogging it from the [[Lake Pontchartrain Causeway]] to the junction with I-10 and I-59. == Exit list == {| class="wikitable" |- !Parish !Location ![[Exit number|#]] !Destinations !Notes |- !colspan=6|Western Terminus - [[Image:I-10.svg|20px]] [[Interstate 10 in Louisiana|Interstate 10]] - [[Baton Rouge, Louisiana]] |- |rowspan=9|[[East Baton Rouge Parish, Louisiana|East Baton Rouge]] |rowspan=9|[[Baton Rouge, Louisiana|Baton Rouge]] | |{{jct|state=LA|I|10|dir1=West|city1=Baton Rouge}} | |- |align="center"|1A |{{jct|state=LA|I|10|dir1=East|city1=New Orleans}} | |- |align="center"|1B |[[Louisiana Highway 3064|LA 3064]] (Essen Lane) |Eastbound exit and westbound/eastbound entrances. |- |align="center"|1B |[[Image:Louisiana 1068.svg|25 px]] To [[Image:Louisiana 73.svg|20 px]] [[Louisiana Highway 1068|LA 1068]]/[[Louisiana Highway 73|LA 73]]<br>Drusilla Lane (To) Jefferson Highway |Westbound exit and eastbound entrance only. |- |align="center"|2A |{{jct|state=LA|US|61|dir1=South|name1=Airline Highway}} | |- |align="center"|2B |{{jct|state=LA|US|61|dir1=North|name1=Airline Highway}} | Alternate route to [[Baton Rouge Metropolitan Airport]]. |- |align="center"|4 |Sherwood Forest Boulevard | |- |align="center"|6 |Millerville Road | |- |align="center"|7 |[[Louisiana Highway 3245|LA 3245]] (O'Neal Lane) | |- |colspan=2|[[East Baton Rouge Parish, Louisiana|East Baton Rouge]]-[[Livingston Parish, Louisiana|Livingston]]<br>parish line !colspan=3|[[Image:I-12.svg|20 px]] crosses the [[Amite River]] |- |rowspan=7|[[Livingston Parish, Louisiana|Livingston]] |[[Denham Springs, Louisiana|Denham Springs]] |align="center"|10 |[[Louisiana Highway 3002|LA 3002]] - [[Denham Springs, Louisiana|Denham Springs]] | |- | |align="center"|12 |[[Louisiana Highway 1026|LA 1026]] (Juban Road) |Opened April 20, 2007.<ref>[http://www.dotd.state.la.us/press/pressrelease.asp?nRelease=780 Juban Road interchange at I-12 opens] Press release, Louisiana Department of Transportation and Development. Accessed April 21, 2007.</ref> |- |[[Walker, Louisiana|Walker]] |align="center"|15 |[[Image:Louisiana 447.svg|25 px]] [[Louisiana Highway 447|LA 447]] [[Port Vincent, Louisiana|Port Vincent]], [[Walker, Louisiana|Walker]] | |- | |align="center"|19 |[[Colyell, Louisiana|Colyell]], [[Satsuma, Louisiana|Satsuma]] | |- |[[Livingston, Louisiana|Livingston]] |align="center"|22 |[[Image:Louisiana 63.svg|20 px]] [[Louisiana Highway 63|LA 63]] - [[Frost, Louisiana|Frost]], [[Livingston, Louisiana|Livingston]] | |- | |align="center"|29 |[[Image:Louisiana 441.svg|25 px]] [[Louisiana Highway 441|LA 441]] - [[Holden, Louisiana|Holden]] | |- | |align="center"|32 |[[Image:Louisiana 43.svg|20 px]] [[Louisiana Highway 43|LA 43]] - [[Springfield, Louisiana|Springfield]], [[Albany, Louisiana|Albany]] | |- |colspan=2|[[Livingston Parish, Louisiana|Livingston]]-[[Tangipahoa Parish, Louisiana|Tangipahoa]]<br>parish line !colspan=3|[[Image:I-12.svg|20 px]] crosses the [[Natalbany River]] |- |rowspan=6|[[Tangipahoa Parish, Louisiana|Tangipahoa]] | |align="center"|35 |Pumpkin Center Road, [[Baptist, Louisiana|Baptist]] | |- | |align="center"|38A |{{jct|state=LA|I|55|dir1=South|city1=New Orleans}} | |- | |align="center"|38B |{{jct|state=LA|I|55|dir1=North}} - [[Jackson, Mississippi|Jackson]] | |- |[[Hammond, Louisiana|Hammond]] |align="center"|40 |[[Image:Business plate.svg|20 px]]<br>[[Image:US 51.svg|20px]] [[U.S. Route 51]] {{scaps|Business}} - [[Ponchatoula, Louisiana|Ponchatoula]], [[Hammond, Louisiana|Hammond]] |Exit to reach [[Southeastern Louisiana University]] |- | |align="center"|43 |[[Image:Louisiana 3158.svg|25 px]] [[Louisiana Highway 3158|LA 3158]] (Airport Road) | |- | |align="center"|47 |[[Image:Louisiana 445.svg|25 px]] [[Louisiana Highway 445|LA 445]] - [[Robert, Louisiana|Robert]] | |- |rowspan=11|[[St. Tammany Parish, Louisiana|St. Tammany]] | |align="center"|57 |[[Louisiana Highway 1077|LA 1077]] - [[Goodbee, Louisiana|Goodbee]] | |- | |align="center"|59 |[[Image:Louisiana 21.svg|20px]] [[Louisiana Highway 21|LA 21]] - [[Madisonville, Louisiana|Madisonville]], [[Covington, Louisiana|Covington]] | |- | |align="center"|63A |{{jct|state=LA|US|190|dir1=East|city1=Mandeville}} |Exit to reach the [[Lake Pontchartrain Causeway]] |- | |align="center"|63B |{{jct|state=LA|US|190|dir1=West|city1=Covington}} | |- | |align="center"|65 |[[Image:Louisiana 59.svg|20 px]] [[Louisiana Highway 59|LA 59]] - [[Mandeville, Louisiana|Mandeville]], [[Abita Springs, Louisiana|Abita Springs]] | |- | |align="center"|74 |[[Image:Louisiana 434.svg|25 px]] [[Louisiana Highway 434|LA 434]] - [[Lacombe, Louisiana|Lacombe]], [[St. Tammany, Louisiana|Saint Tammany]] | |- |rowspan=2|[[Slidell, Louisiana|Slidell]] |align="center"|80 |Northshore Boulevard, Airport Road | |- |align="center"|83 |{{jct|state=LA|US|11|city1=Slidell|city2=Pearl River}} | |- | |align="center"|85A |{{jct|state=LA|I|10|dir1=West|city1=New Orleans}} | |- | |align="center"|85B |{{jct|state=LA|I|59|dir1=North}} - [[Hattiesburg, Mississippi|Hattiesburg]] | |- | |align="center"|85C |{{jct|state=LA|I|10|dir1=East}} - [[Bay St. Louis, Mississippi|Bay St. Louis]] | |- !colspan=6|Eastern Terminus - [[Image:I-10.svg|20px]] [[Interstate 10 (Louisiana)|Interstate 10]]/[[Image:I-59.svg|20px]] [[Interstate 59]] near [[Slidell, Louisiana]] |} ==References== {{reflist}} {{interstates}} {{DEFAULTSORT:12}} [[Category:Interstate Highway System]] [[Category:Interstate Highways in Louisiana]] [[Category:East Baton Rouge Parish, Louisiana]] [[Category:Ascension Parish, Louisiana]] [[Category:Livingston Parish, Louisiana]] [[Category:Tangipahoa Parish, Louisiana]] [[Category:St. Tammany Parish, Louisiana]] [[de:Interstate 12]] [[es:Interstate 12]] [[fr:Interstate 12]] [[pl:Autostrada międzystanowa nr 12]] [[sv:Interstate 12]] [[zh:12號州際公路]]