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]]