Interstate 12
From Wikipedia, the free encyclopedia
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| Interstate 12 Main route of the Interstate Highway System |
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| Length: | 85.59 mi[1] (137.74 km) | ||||
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| West end: |  I-10 in Baton Rouge |
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| Major junctions: |
 US 61 in Baton Rouge I-55 near Hammond US 190 near Covington |
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| East end: |  I-10/I-59 near Slidell |
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Interstate 12 (abbreviated I-12) is an intrastate interstate highway located entirely within the state of Louisiana. I-12 starts in 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[2]. 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 85 miles (137 km). While Interstates 19, 66, 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 73.5-mile (118.3 km) I-295 in New Jersey and Delaware, or the 72.8-mile (117.2 km) I-405 in California, both of which are auxiliary Interstate highways.
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[edit] 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.
| Major cities Bolded cities are officially-designated control cities for signs |
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Please help improve this section by expanding it. Further information might be found on the talk page or at requests for expansion. |
[edit] 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.
[edit] Exit list
| Parish | Location | # | Destinations | Notes | |
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| Western Terminus - Interstate 10 - Baton Rouge, Louisiana |
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| East Baton Rouge | Baton Rouge | I-10 West – Baton Rouge |
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| 1A | I-10 East – New Orleans |
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| 1B | LA 3064 (Essen Lane) | Eastbound exit and westbound/eastbound entrances. | |||
| 1B |  To  LA 1068/LA 73Drusilla Lane (To) Jefferson Highway |
Westbound exit and eastbound entrance only. | |||
| 2A | US 61 South (Airline Highway) |
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| 2B | US 61 North (Airline Highway) |
Alternate route to Baton Rouge Metropolitan Airport. | |||
| 4 | Sherwood Forest Boulevard | ||||
| 6 | Millerville Road | ||||
| 7 | LA 3245 (O'Neal Lane) | ||||
| East Baton Rouge-Livingston parish line |
 crosses the Amite River |
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| Livingston | Denham Springs | 10 | LA 3002 - Denham Springs | ||
| 12 | LA 1026 (Juban Road) | Opened April 20, 2007.[3] | |||
| Walker | 15 |  LA 447 Port Vincent, Walker |
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| 19 | Colyell, Satsuma | ||||
| Livingston | 22 |  LA 63 - Frost, Livingston |
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| 29 |  LA 441 - Holden |
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| 32 |  LA 43 - Springfield, Albany |
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| Livingston-Tangipahoa parish line |
crosses the Natalbany River |
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| Tangipahoa | 35 | Pumpkin Center Road, Baptist | |||
| 38A | I-55 South – New Orleans |
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| 38B | I-55 North - Jackson |
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| Hammond | 40 |   U.S. Route 51 Business - Ponchatoula, Hammond |
Exit to reach Southeastern Louisiana University | ||
| 43 |  LA 3158 (Airport Road) |
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| 47 |  LA 445 - Robert |
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| St. Tammany | 57 | LA 1077 - Goodbee | |||
| 59 |  LA 21 - Madisonville, Covington |
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| 63A | US 190 East – Mandeville |
Exit to reach the Lake Pontchartrain Causeway | |||
| 63B | US 190 West – Covington |
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| 65 |  LA 59 - Mandeville, Abita Springs |
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| 74 |  LA 434 - Lacombe, Saint Tammany |
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| Slidell | 80 | Northshore Boulevard, Airport Road | |||
| 83 |  US 11 – Slidell, Pearl River |
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| 85A | I-10 West – New Orleans |
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| 85B | I-59 North - Hattiesburg |
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| 85C | I-10 East - Bay St. Louis |
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| Eastern Terminus - Interstate 10/ Interstate 59 near Slidell, Louisiana |
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[edit] References
- ^ Interstate 12 @ Interstate-Guide.com. Interstate Guide. Retrieved on 2008-02-15.
- ^ Overview Map of I-12. Google Maps. Retrieved on 2008-02-15.
- ^ Juban Road interchange at I-12 opens Press release, Louisiana Department of Transportation and Development. Accessed April 21, 2007.
| Main Interstate Highways (multiples of 5 in pink) |  |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 5 | 8 | 10 | 12 | 15 | 16 | 17 | 19 | 20 | 22 | 24 | 25 | 26 | 27 | 29 | 30 | |||
| 35 | 37 | 39 | 40 | 43 | 44 | 45 | 49 | 55 | 57 | 59 | 64 | 65 | 66 | 68 | 69 | ||||
| 70 | 71 | 72 | 73 | 74 | 75 | 76 (W) | 76 (E) | 77 | 78 | 79 | 80 | 81 | 82 | ||||||
| 83 | 84 (W) | 84 (E) | 85 | 86 (W) | 86 (E) | 87 | 88 (W) | 88 (E) | 89 | 90 | |||||||||
| 91 | 93 | 94 | 95 | 96 | 97 | 99 | (238) | H-1 | H-2 | H-3 | |||||||||
| Unsigned | A-1 | A-2 | A-3 | A-4 | PRI-1 | PRI-2 | PRI-3 | ||||||||||||
| Lists | Primary | Main - Intrastate - Suffixed - Future - Gaps | |||||||||||||||||
| Auxiliary | Main - Future - Unsigned | ||||||||||||||||||
| Other | Standards - Business - Bypassed | ||||||||||||||||||
