Interstate 12
From Wikipedia, the free encyclopedia
 |
|
| Interstate 12 Main route of the Interstate Highway System |
|
 |
|
| Length: | 85.59 mi (137.74 km) |
|---|---|
| West end: |  I-10 in Baton Rouge, LA |
| Major junctions: |
 I-55 near Hammond, LA U.S. 190 near Covington, LA |
| East end: |  I-10 and I-59 near Slidell, LA |
|
|
|
Interstate 12 (abbreviated I-12) is an intrastate interstate highway located entirely within the state of Louisiana, United States. It starts in Baton Rouge, Louisiana (map) where it branches off of Interstate 10, travels along the North Shore of Lake Pontchartrain, and ends at the intersection of Interstate 10 and Interstate 59 near Slidell, Louisiana (map). 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 terminius until Exit 7 (O'Neal Lane) at which point it becomes a 4 lane highway all the way to the eastern terminus.
The highway is relatively short for a mainline route at only 85 miles - while Interstate 19 (63 mi.), Interstate 66 (76 mi.), Interstate 86 (west) (63 mi.), Interstate 97 (18 mi.) and Interstate 99 (58 mi.) are shorter, none of these have two termini with the same route, much less within the same state as well. Compare to the 73.5 mile Interstate 295 in New Jersey and Delaware, which bypasses Interstate 95 or the 72.8 mile Interstate 405 in California, which (arguably) bypasses Interstate 5.
Contents |
[edit] Route Description
[edit] Major cities
Bolded cities are officially-designated control cities for signs.
[edit] Exit list
| Parish | Location | Mile | Exit # | Destinations | Notes |
|---|---|---|---|---|---|
| Western Terminus - I-10 - Baton Rouge, Louisiana |
|||||
| East Baton Rouge | Baton Rouge |  Interstate 10 West - Baton Rouge |
|||
| 1A |  Interstate 10 East - New Orleans |
||||
| 1B | LA 3064 - Essen Lane | Eastbound exit, westbound entrance | |||
| 1B | LA 1068 To  LA 73 - Drusilla Lane; Jefferson Highway |
Westbound exit, eastbound entrance | |||
| 2A |   U.S. 61 South - Airline Highway |
||||
| 2B |  U.S. 61 North - Airline Highway |
||||
| 4 | Sherwood Forest Boulevard | ||||
| 6 | Millerville Road | ||||
| 7 | LA 3245 - O'Neal Lane | ||||
| East Baton Rouge Parish / Livingston Parish Line (Mile 9) | |||||
| Livingston | Denham Springs | 10 | LA 3002 - Denham Springs | ||
| LA 1026 - Juban Road | Under Construction | ||||
| 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 |
||||
| Livingston Parish / Tangipahoa Parish Line (Mile 34) | |||||
| Tangipahoa | 35 | Pumpkin Center Road; Baptist | |||
| 38A |  Interstate 55 South - New Orleans |
||||
| 38B |  Interstate 55 North - Jackson |
||||
| Hammond | 40 |   U.S. 51 Business - Ponchatoula; Hammond |
|||
| 43 | LA 3158 - Airport Road | ||||
| 47 | LA 445 - Robert | ||||
| Tangipahoa Parish / St. Tammany Parish Line (Mile 53) | |||||
| St. Tammany | 57 | LA 1077 - Goodbee | |||
| 59 |  LA 21 - Madisonville; Covington |
||||
| 63A |  U.S. 190 East - Mandeville |
Access to Lake Pontchartrain Causeway | |||
| 63B |  U.S. 190 West - Covington |
||||
| 65 |  LA 59 - Mandeville; Abita Springs |
||||
| 74 | LA 434 - Lacombe; Saint Tammany | ||||
| Slidell | 80 | Northshore Boulevard; Airport Road | |||
| 83 |  U.S. 11 - Slidell; Pearl River |
||||
| 85A | Interstate 10 West - New Orleans |
||||
| 85B | Interstate 59 North - Hattiesburg |
||||
| 85C | Interstate 10 East - Bay Saint Louis |
||||
| Eastern Terminus - Interstate 10 / Interstate 59 - Slidell, Louisiana |
|||||
[edit] Notes
- 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 at 3:00 PM, the eastbound span of I-10 over Lake Pontchartrain was reopened to two way traffic. The westbound I-10 Twin Span reopened on January 6, 2006 at 6:00 AM, with speed, weight and size restrictions, relieving I-12 of much of the congestion that was clogging it from the Lake Ponchartrain Causeway to the junction with I-10 and I-59.
- The state Department of Transportation is currently constructing a new interchange at Juban Road, just east of Denham Springs. Construction is slated to be complete in late 2007 or early 2008. [1]
| Main Interstate Highways (multiples of 5 in pink) |  |
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 66 (W) | 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 | Main - Auxiliary - Suffixed - Business - Proposed - Unsigned Gaps - Intrastate - Interstate standards - Replaced |
|||||||||||||||
