Interstate 12
From Wikipedia, the free encyclopedia
 |
|||||||||
| Interstate 12 Main route of the Interstate Highway System |
|||||||||
| Maintained by LaDOTD | |||||||||
 |
|||||||||
| Length: | 85.59 mi[1] (137.74 km) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| West end: |  I-10 in Baton Rouge |
||||||||
| Major junctions: |
 US 61 in Baton Rouge I-55 near Hammond US 190 near Covington |
||||||||
| East end: |  I-10 / I-59 near Slidell |
||||||||
|
|||||||||
Interstate 12 (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 has 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, or even the 121-mile (195 km) I-495 in Massachusetts both of which are auxiliary Interstate Highways.
Contents |
[edit] Route description
I-12 breaks away from I-10 near Baton Rouge. It is used as a main route around New Orleans and Lake Pontchartrain. I-12 continues East passing through the suburbs of Baton Rouge. It makes an interchange with I-55 near Hammond. I-12 ends at I-10 (Heading East and South) and I-59 (Heading North) near Slidell.
| Major cities Bolded cities are officially-designated control cities for signs |
|---|
|
[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 |
|---|---|---|---|---|
| East Baton Rouge | Baton Rouge | I-10 west – Baton Rouge |
||
| 1A | I-10 east – New Orleans |
|||
| 1B |   LA 3064 (Essen Lane) to LA 73 (Jefferson Highway) |
Eastbound exit only and east & west bound entrances. | ||
 LA 1068 (Drusilla Lane) to LA 73 (Jefferson Highway) |
Westbound exit and eastbound entrance only. | |||
| 2 | US 61 (Airline Highway) |
Alternate route to Baton Rouge Metropolitan Airport. Signed as exit 2A (south) and 2B (north). |
||
| 4 | Sherwood Forest Boulevard | |||
| 6 | Millerville Road | |||
| 7 |  LA 3245 (O'Neal Lane) |
|||
| 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 |
||
| 19 | Colyell, Satsuma | |||
| Livingston | 22 |  LA 63 – Frost, Livingston |
||
| 29 |  LA 441 – Holden |
|||
| 32 |  LA 43 – Springfield, Albany |
|||
| Tangipahoa | 35 | Pumpkin Center Road, Baptist | ||
| 38 | I-55 – New Orleans, Jackson |
Signed as exits 38A (south) and 38B (north) | ||
| Hammond | 40 |   US 51 Bus. – Ponchatoula, Hammond |
Exit to reach Southeastern Louisiana University | |
| 43 |  LA 3158 (Airport Road) |
|||
| 47 |  LA 445 – Robert |
|||
| St. Tammany | 57 |  LA 1077 – Goodbee |
||
| 59 |  LA 21 – Madisonville, Covington |
|||
| 60 | Pinnacle Parkway, East Brewster Road | (opening Fall 2009)[4] | ||
| 63 | US 190 – Mandeville, Covington |
Exit to reach the Lake Pontchartrain Causeway Signed as exits 63A (South bound, to Mandeville & Causeway) and 63B (North bound to Covington). |
||
| 65 |  LA 59 – Mandeville, Abita Springs |
|||
| 74 |  LA 434 – Lacombe, St. Tammany |
|||
| Slidell | 80 | Northshore Boulevard, Airport Road | ||
| 83 |  US 11 – Slidell, Pearl River |
|||
| 85A | I-10 west – New Orleans |
|||
| 85B | I-59 north - Hattiesburg |
|||
| 85C | I-10 east - Bay St. Louis |
[edit] References
- ^ "Interstate 12 @ Interstate-Guide.com". Interstate Guide. http://www.interstate-guide.com/i-012.html. Retrieved on 2008-02-15.
- ^ Google, Inc. Google Maps – overview map of I-12 [map]. Cartography by Tele Atlas. Retrieved on 2008-02-15.
- ^ Juban Road interchange at I-12 opens Press release, Louisiana Department of Transportation and Development. Accessed April 21, 2007.
- ^ I-12 exits south of Covington to debut in fall
 |
Wikimedia Commons has media related to: Interstate 12 |
| Main Interstate Highways (multiples of 5 highlighted) |  |
||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||||||||||||||||||
