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U.S. Highway 51

U.S. 51 travels 69 miles northward from its beginning in Laplace to Hammond, Indepdendence, Amite, Tangipahoa and Kentwood in southeastern Louisiana. The route shares an alignment with Interstate 55 north from outside Laplace to a bypass west of Ponchatoula and parallels the freeway to the east from Hammond to the Mississippi state line.

Until 1951, U.S. 51 joined U.S. 61 and 65 from Laplace southeast into New Orleans. The overlaps of both U.S. 51 and 65 along U.S. 61 were to guide through travelers northward to Mississippi.

U.S. 51 Business

An 8.6-mile business route exists for U.S. 51 along the pre-1965 alignment of U.S. 51 through both Ponchatoula and Hammond. U.S. 51 Business begins at Exit 23 of Interstate 55 & U.S. 51 and runs northward along Railroad Avenue north to Pine Street (LA-22) west to Veterans Avenue north through Ponchatoula. Beyond Exit 40 of Interstate 12, U.S. 51 Business follows SW Railroad Avenue to a one-way street couplet with Oak Street in downtown Hammond. The route ends at U.S. 190, 1.25 miles east of U.S. 51 (Morrison Boulevard).

U.S. 51 north
U.S. 51 begins at U.S. 61 in Laplace with the first shield posted just north of Airline Highway, across from Riverwood shopping center. The five-lane arterial ventures northeast through Laplace to Interstate 10. Photo taken 11/06/99.
A diamond interchange joins U.S. 51 with Interstate 10 on the outskirts of Laplace. U.S. 51 north provides the connection for eastbound drivers along I-10 bound for Interstate 55 north. Photo taken 06/26/01.
U.S. 51 expands to a four-lane divided highway between the two Interstate highways. A travel plaza occupies the space between the the converging freeways. Photo taken 10/23/03.
Approaching the merge of U.S. 51 northbound onto the Interstate 55 viaduct north of Laplace. Old U.S. 51 continues northward at grade through to Manchac. Photo taken 10/23/03.
U.S. 51 follows the northbound on-ramp from Old U.S. 51 opposite Frenier Road. Interstate 55 & U.S. 51 continue together north to Exit 26 outside Hammond. Photo taken 10/23/03.
Old U.S. 51 quickly reduces from four to two lanes as it travels north along side remnants of an even older alignment of U.S. 51 and a Canadian National Railroad parallel to it. Interstate 55 & U.S. 51 see two interchanges with Old U.S. 51 between Laplace and Ponchatoula. Photo taken 10/23/03.
U.S. 51 south
U.S. 51 concludes at U.S. 61 (Airline Highway) in Laplace. U.S. 61 travels generally east-west between Baton Rouge and New Orleans with the stretch through Laplace doubling as the main commercial corridor. Since this photo was taken, a fast food eatery was constructed south of U.S. 61, reconfiguring the traffic signals into a split phase arrangement. Photo taken 11/06/99.

U.S. 51 Business south
U.S. 51 shield posted at the intersection of Oak Street and U.S. 190 (Morris Avenue) east in downtown Hammond. U.S. 51 Business is routinely signed as the U.S. 51 mainline in Hammond. Photo taken 11/20/08.
Coleman Avenue intersects U.S. 51 Business (Oak Street) south at the next traffic light. Zemurray Park resides on the southwest quadrant of the intersection. Photo taken 11/20/08.
U.S. 51 Business veers southeast from Oak Street to join Railroad Avenue ahead of 1st Avenue. Photo taken 11/20/08.
Now on Railroad Avenue, a five-lane arterial, U.S. 51 Business approaches a traffic light at Old Covington Highway. Old Covington Highway east from Hammond was once a part of Louisiana 1067. Photo taken 11/20/08.
A myriad of traveler services line U.S. 51 Business (Railroad Avenue) ahead of the diamond interchange with Interstate 12. Photo taken 11/20/08.
Adjacent Hammond Square Mall adds to the traffic congestion of U.S. 51 Business (Railroad Avenue) south at Interstate 12. Photo taken 11/20/08.

Photo Credits:
1999-11-06, 2001-06-26, 2003-10-23, 2008-11-20 by AARoads

Connect with:
Interstate 10
Interstate 55
U.S. Highway 61
U.S. Highway 190

Page Updated 09-26-2012.

 
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