List of state highways in Louisiana (600–649)

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The following is a list of state highways in the U.S. state of Louisiana designated in the 600–649 range.


Louisiana Highway 600[]

Louisiana Highway 600 marker

Louisiana Highway 600

Location–
Length4.74 mi[1][2] (7.63 km)

Louisiana Highway 601[]

Louisiana Highway 601 marker

Louisiana Highway 601

LocationRichmond–Tallulah
Length1.70 mi[1][3] (2.74 km)

Louisiana Highway 602[]

Louisiana Highway 602 marker

Louisiana Highway 602

LocationRichmond–Mound
Length2.86 mi[1] (4.60 km)

Louisiana Highway 602 (LA 602) consists of two segments of state highways in Madison Parish that connect I-20 and US 80.

Louisiana Highway 602-1[]

Louisiana Highway 602-1 marker

Louisiana Highway 602-1

LocationRichmond
Length1.92 mi[1] (3.09 km)

Louisiana Highway 602-1 (LA 602-1) (1.92 miles or 3.09 kilometres) runs near Richmond between US 80 and I-20's exit 173. It is a two-lane roadway that runs to the east of Richmond mostly paralleling a canal named Brushy Bayou.[1][4]

Louisiana Highway 602-2[]

Louisiana Highway 602-2 marker

Louisiana Highway 602-2

LocationMound
Length0.93 mi[1] (1,500 m)

Louisiana Highway 602-2 (LA 602-2) (0.93 miles or 1.50 kilometres) runs inside Mound between I-20's exit 182 and US 82.[1][5]

The two segments of this road previously connected on a road (known only as LA 602) south of I-20 paralleling Brushy Bayou and Walnut Bayou. This segment was deleted from the state highway system between 2012 and 2017.[6][7]

Louisiana Highway 603[]

Louisiana Highway 603 marker

Louisiana Highway 603

Location–Richmond
Length19.34 mi[1][8] (31.12 km)

Louisiana Highway 604[]

Louisiana Highway 604 marker

Louisiana Highway 604

LocationSt. Joseph–Lake Bruin
Length9.22 mi[1][9] (14.84 km)

Louisiana Highway 605[]

Louisiana Highway 605 marker

Louisiana Highway 605

LocationSt. Joseph–
Length19.63 mi[1] (31.59 km)
Existed1955–present

Louisiana Highway 605 (LA 605) runs 19.63 miles (31.59 km) in a north–south direction from the junction of LA 128 and LA 897-1 in St. Joseph to US 65 north of Newellton, Tensas Parish.[10]

LA 605 heads north from St. Joseph following the shoreline of Lake Bruin, an oxbow lake of the Mississippi River. The highway intersects LA 607 and LA 604 as it breaks away from the lake to the northeast. It then intersects LA 608 and turns northwest, continuing the route of that highway along Lake St. Joseph, a second oxbow lake. Passing through the town of Newellton, LA 605 intersects LA 4 and LA 887. Following a turn to the north at Balmoral, the highway ends at an intersection with US 65.[10]

The entire highway is in Tensas Parish.

Locationmi[10]kmDestinationsNotes
St. Joseph0.00.0 LA 128 west / LA 897-1 south (Plank Road)Southern terminus of LA 605; eastern terminus of LA 128; northern terminus of LA 897-1
​1.42.3 LA 604 northSouthern terminus of LA 604
7.011.3
 LA 607 west to US 65		Eastern terminus of LA 607
​7.712.4 LA 604 southNorthern terminus of LA 604
​10.516.9 LA 608 northSouthern terminus of LA 608
Newellton13.121.1 LA 4 west (Verona Street)Eastern terminus of LA 4
13.421.6 LA 887 eastWestern terminus of LA 887
Balmoral16.326.2 LA 888 northSouthern terminus of LA 888
16.526.6 LA 608 southNorthern terminus of LA 608
​19.831.9 US 65Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 606[]

Louisiana Highway 606 marker

Louisiana Highway 606

LocationLake Bruin
Length10.32 mi[1][11] (16.61 km)

Louisiana Highway 607[]

Louisiana Highway 607 marker

Louisiana Highway 607

Location
Length0.19 mi[1] (310 m)
Existed1955–present

Louisiana Highway 607 (LA 607) runs 0.19 miles (0.31 km) in an east–west direction from US 65 to LA 605 north of , Tensas Parish.[12]

The route serves as a short connector, providing access to Lake Bruin from US 65. LA 607 is located roughly midway between St. Joseph and Newellton. It is an undivided two-lane highway for its entire length.[12][13][14]

The entire route is in Tensas Parish.

mi[1]kmDestinationsNotes
0.000.00 US 65 – Ferriday, TallulahWestern terminus
0.190.31 LA 605 – Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 608[]

Louisiana Highway 608 marker

Louisiana Highway 608

Location–Balmoral
Length21.77 mi[1][15] (35.04 km)

Louisiana Highway 609[]

Louisiana Highway 609 marker

Louisiana Highway 609

LocationDunn
Length3.76 mi[1][16] (6.05 km)

Louisiana Highway 610[]

Louisiana Highway 610 marker

Louisiana Highway 610

LocationSwampers
Length9.79 mi[1][17] (15.76 km)

Louisiana Highway 611[]

Louisiana Highway 611 marker

Louisiana Highway 611

LocationJefferson–Metairie–New Orleans
Length6.40 mi[1] (10.30 km)
Main article: Louisiana Highway 611

Louisiana Highway 612[]

Louisiana Highway 612 marker

Louisiana Highway 612

LocationBossier City–
Length3.60 mi[1][18] (5.79 km)

Louisiana Highway 613[]

Louisiana Highway 613 marker

Louisiana Highway 613

LocationMetairie–New Orleans
Length5.2 mi[1] (8.4 km)
Existed1955–2010
Main article: Louisiana Highway 613

Louisiana Highway 614[]

Louisiana Highway 614 marker

Louisiana Highway 614

LocationHaughton
Length5.71 mi[1][19] (9.19 km)

Louisiana Highway 615[]

Louisiana Highway 615 marker

Louisiana Highway 615

LocationShongaloo–Haynesville
Length10.34 mi[1] (16.64 km)
Existed1955–present

Louisiana Highway 615 (LA 615) runs 10.34 miles (16.64 km) in an east–west direction from a junction with LA 157 and LA 159 north of Shongaloo, Webster Parish to US 79 in Haynesville, Claiborne Parish.[20]

Louisiana Highway 616[]

Louisiana Highway 616 marker

Louisiana Highway 616

LocationClaiborne–West Monroe
Length6.20 mi[1][21] (9.98 km)

Louisiana Highway 617[]

Louisiana Highway 617 marker

Louisiana Highway 617

LocationWest Monroe
Length3.33 mi[1][22] (5.36 km)

Louisiana Highway 618[]

Louisiana Highway 618 marker

Louisiana Highway 618

LocationWinnsboro
Length5.92 mi[1][23] (9.53 km)

Louisiana Highway 619[]

Louisiana Highway 619 marker

Louisiana Highway 619

LocationShell Beach
Length2.2 mi (3.5 km)
Existed1955–1960
Main article: Louisiana Highway 619

Louisiana Highway 620[]

Louisiana Highway 620 marker

Louisiana Highway 620

LocationWest Baton Rouge Parish
Length7.06 mi[1] (11.36 km)
Existed1955–present

Louisiana Highway 620 (LA 620) runs 7.06 miles (11.36 km) in an east–west direction from LA 413 in Erwinville to LA 415 northwest of Port Allen, West Baton Rouge Parish.

LA 620 heads due east from LA 413, just north of the latter's intersection with the concurrent US 190 and LA 1 in Erwinville. LA 620 intersects three minor state routes (LA 3091, LA 984, and LA 983) before terminating at LA 415 (River Road) in an area known as . LA 620 is an undivided two-lane highway for its entire length.

Before the 1955 Louisiana Highway renumbering, LA 620 was part of .

The entire highway is in West Baton Rouge Parish.

LocationmikmDestinationsNotes
Erwinville0.00.0 LA 413 (Poydras Bayou Road)Western terminus
​1.01.6 LA 3091 (Flynn Road)Southern terminus of LA 3091
​2.54.0 LA 984 (Rougon Road)Southern terminus of LA 984
​4.97.9 LA 983 (Bueche Road)
7.011.3 LA 415 (River Road)Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 621[]

Louisiana Highway 621 marker

Louisiana Highway 621

LocationPrairieville–
Length6.81 mi[1] (10.96 km)
Existed1955–present

Louisiana Highway 621 (LA 621) runs 6.81 miles (10.96 km) in an east–west direction from LA 73 in Prairieville to LA 431 at , Ascension Parish.[24]

The route heads east from LA 73 (Old Jefferson Highway) adjacent to I-10 Exit 173. It crosses both US 61 (Airline Highway) and LA 44 (North Burnside Avenue) north of Gonzales before ending at LA 431 in an area known as Brignac. LA 621 is an undivided two-lane highway for its entire length.[24][25][26]

The entire highway is in Ascension Parish.

Locationmi[1]kmDestinationsNotes
Prairieville0.00.0
 LA 73 (Old Jefferson Highway) to I-10 – Baton Rouge, New Orleans		Western terminus
Duplessis2.64.2 US 61 (Airline Highway) – Baton Rouge, New Orleans
​3.86.1 LA 44 (North Burnside Avenue)
6.810.9 LA 431 (Brittany–Port Vincent Highway)Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 622[]

Louisiana Highway 622 marker

Louisiana Highway 622

LocationMangham
Length4.83 mi[1][27] (7.77 km)

Louisiana Highway 623[]

Louisiana Highway 623 marker

Louisiana Highway 623

LocationBall
Length4.94 mi[1][28] (7.95 km)

Louisiana Highway 624[]

Louisiana Highway 624 marker

Louisiana Highway 624

LocationYscloskey–Hopedale
Length5.80 mi[1] (9.33 km)
Existed1955–present

Louisiana Highway 624 (LA 624) runs 5.80 miles (9.33 km) in an east–west direction from LA 46 in Yscloskey to a point near the Mississippi River Gulf Outlet Canal east of Hopedale, St. Bernard Parish.[29]

The route heads southeast from Yscloskey, running along the north bank of . After passing through Hopedale, LA 624 curves to the northeast with the bayou and proceeds 1.5 miles (2.4 km) to the end of state maintenance. A local road continues a short distance to a dead end at the Mississippi River Gulf Outlet Canal. LA 624 is an undivided two-lane highway for its entire length.[29][30][31]

The entire highway is in St. Bernard Parish.

Locationmi[1]kmDestinationsNotes
Yscloskey0.00.0 LA 46 (Hopedale Highway, Florissant Highway) – Shell Beach, New OrleansWestern terminus
​5.89.3End state maintenance southwest of Mississippi River Gulf Outlet CanalEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 625[]

Louisiana Highway 625 marker

Louisiana Highway 625

LocationYscloskey
Length0.25 mi[1] (400 m)
Existed1955–present

Louisiana Highway 625 (LA 625) runs 0.25 miles (0.40 km) in an east–west direction along Maple Street in Yscloskey, St. Bernard Parish.[32]

The route begins at LA 46 (Florissant Highway), which runs along . It then curves to the southeast to a dead end at . It is an undivided, two-lane highway for its entire length.[30][31][32]

In the pre-1955 state highway system, LA 625 was designated as .[33] LA 625 was created in the 1955 Louisiana Highway renumbering,[34] its western end following a slightly different connection to LA 46.[30][35]

The entire highway is in Yscloskey, St. Bernard Parish.

mi[1]kmDestinationsNotes
0.000.00 LA 46 (Florissant Highway)Western terminus
0.250.40Dead end at Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 626[]

Louisiana Highway 626 marker

Louisiana Highway 626

LocationSt. Rose–Destrehan
Length2.56 mi[1] (4.12 km)
Existed1955–present

Louisiana Highway 626 (LA 626) runs 2.56 miles (4.12 km) in a north–south direction along St. Rose Avenue from LA 48 in St. Rose to US 61 at the northeast corner of Destrehan, St. Charles Parish.[36]

The route connects the community of St. Rose with US 61 (Airline Highway) west of New Orleans. Along its short route, LA 626 crosses both the Canadian National Railway (CN) and Kansas City Southern Railway (KCS) tracks at grade. It also crosses under but does not intersect I-310. LA 626 is an undivided two-lane highway for its entire length.[31][36][37]

The entire highway is in St. Charles Parish.

Locationmi[1]kmDestinationsNotes
St. Rose0.00.0 LA 48 (River Road) – Destrehan, Mississippi River Bridge, LulingSouthern terminus
Destrehan2.64.2 US 61 (Airline Highway) – New Orleans, Baton RougeNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 627[]

Louisiana Highway 627 marker

Louisiana Highway 627

LocationNorco
Length1.14 mi[1] (1.83 km)
Existed1955–present

Louisiana Highway 627 (LA 627) runs 1.14 miles (1.83 km) in a north–south direction along Prospect Avenue in Norco, St. Charles Parish.[38]

The route connects US 61 (Airline Highway) with LA 48 (River Road) in an area known as Good Hope. It travels through the Valero and Shell–Motiva oil refineries, crossing both the Canadian National Railway (CN) and Kansas City Southern Railway (KCS) tracks at grade. LA 627 is an undivided two-lane highway for its entire length.[31][37][38]

In the pre-1955 state highway system, LA 627 was designated as .[39] LA 627 was created in the 1955 Louisiana Highway renumbering,[34] connecting to LA 48 at a slightly different location. In the early 2000s, the southern portion of LA 627 was re-routed from Prospect Avenue onto a parallel road formerly known as Garrison Street.[37][40] The original route is now signed as "Old Prospect."[38]

The entire highway is in Norco, St. Charles Parish.

mi[1]kmDestinationsNotes
0.00.0 LA 48 (River Road) – Norco, DestrehanSouthern terminus; location also known as Good Hope
1.11.8 US 61 (Airline Highway) – New Orleans, Baton RougeNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 628[]

Louisiana Highway 628 marker

Louisiana Highway 628

LocationLaPlace–Montz
Length8.04 mi[1] (12.94 km)
Existed1955–present

Louisiana Highway 628 (LA 628) runs 8.04 miles (12.94 km) in a general east–west direction from LA 44 in LaPlace, St. John the Baptist Parish to US 61 in Montz, St. Charles Parish.[41]

The route heads southeast along East 5th Street from LA 44 (Main Street) in LaPlace. It approaches and begins to run alongside the east bank levee of the Mississippi River, where it becomes known as River Road. LA 628 intersects LA 636-1 (McReine Road) and LA 3217, two short connectors to the parallel US 61.[41][42][43] The highway then crosses from St. John the Baptist Parish into the St. Charles Parish community of Montz. Reaching the Upper Guide Levee of the Bonnet Carré Spillway, LA 628 turns away from the river and heads northeast on C.C. Road. It parallels the spillway levee to its terminus at US 61 (Airline Highway). LA 628 is an undivided two-lane highway for its entire length.[31][37][41]


ParishLocationmi[1]kmDestinationsNotes
St. John the BaptistLaPlace0.00.0 LA 44 (West 5th Street, Main Street)Western terminus
0.10.16 LA 636-3 west (Cardinal Street)Eastern terminus of LA 636-3
1.11.8 LA 636-1 north (McReine Road)Southern terminus of LA 636-1
2.03.2 LA 3217 northSouthern terminus of LA 3217
St. CharlesMontz8.012.9 US 61 (Airline Highway) – New Orleans, Baton RougeEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 629[]

Louisiana Highway 629 marker

Louisiana Highway 629

LocationKillona
Length0.67 mi[44] (1,080 m)
Existed1955–1960s

Louisiana Highway 629 (LA 629) ran 0.67 miles (1.08 km) in a north–south direction along Killona Drive in Killona, St. Charles Parish.[44]

The route headed southwest from LA 18 (River Road), which runs along the Mississippi River, to a crossing of the Texas & Pacific Railroad (now the Union Pacific Railroad) tracks on Killona Drive. It was an undivided, two-lane highway for its entire length.[44]

In the pre-1955 state highway system, LA 629 was designated as .[39] LA 629 was created with the 1955 Louisiana Highway renumbering[34] and deleted sometime in the 1960s. Today a similar route, LA 3141 (Mary Plantation Road), parallels and extends beyond Killona Drive, connecting LA 18 with LA 3127, a bypass of LA 18 that was constructed in the 1970s.[37]

The entire highway was in Killona, St. Charles Parish.

mi[44]kmDestinationsNotes
0.000.00Begin state maintenance at Texas & Pacific Railroad crossingSouthern terminus
0.671.08 LA 18 (River Road) – Donaldsonville, LulingNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 630[]

Louisiana Highway 630 marker

Louisiana Highway 630

LocationHahnville
Length0.94 mi[45] (1,510 m)
Existed1955–c. 1957

Louisiana Highway 630 (LA 630) ran 0.94 miles (1.51 km) in a west–east direction along Courthouse Lane in Hahnville, St. Charles Parish.[45]

The route headed southwest from LA 18 (River Road), which runs along the Mississippi River, made a zigzag around the St. Charles Parish courthouse, and continued to the Texas & Pacific Railroad (now the Union Pacific Railroad) tracks. It was an undivided, two-lane highway for its entire length.[45]

In the pre-1955 state highway system, LA 630 was designated as .[39] LA 630 was created with the 1955 Louisiana Highway renumbering[34] and deleted by 1958.[46] Today a similar route, LA 3160 (Home Place), parallels and extends beyond Courthouse Lane, connecting LA 18 with LA 3127, a bypass of LA 18 that was constructed in the 1970s.[37]

The entire highway was in Hahnville, St. Charles Parish.

mi[45]kmDestinationsNotes
0.000.00Begin state maintenance at Texas & Pacific Railroad tracksWestern terminus
0.941.51 LA 18 (River Road) – Donaldsonville, LulingEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 631[]

Louisiana Highway 631 marker

Louisiana Highway 631

LocationDes Allemands–Boutte
Length9.0 mi (14.5 km)
Existed1955–present

Louisiana Highway 631 (LA 631) runs 9.0 miles (14.5 km) in a southwest to northeast direction from US 90 in Des Allemands to LA 52 in Boutte.

LA 631 follows the original route of US 90 before the parallel four-lane alignment was constructed. It begins in extreme eastern Lafourche Parish and crosses in the community of Des Allemands. The route then heads northeast through St. Charles Parish through the community of Paradis. Just before reaching its terminus at LA 52 in Boutte, LA 631 crosses underneath I-310. LA 631 is an undivided two lane highway for its entire length.

The route has a spur that travels 0.5 miles (0.80 km) to a junction with US 90 in Des Allemands, providing access from the main highway to the small business district.


ParishLocationmikmDestinationsNotes
LafourcheDes Allemands0.00.0 US 90 – New Orleans, Morgan CityWestern terminus
Lafourche–St. Charles
parish line		0.50.80Bridge over
St. Charles0.81.3
 LA 631 Spur (Old US 90)		Western terminus of LA 631 Spur
1.21.9 LA 632 (Levee Road)Western terminus of LA 632
Paradis3.45.5 LA 635Western terminus of LA 635
5.38.5 LA 306 (Bayou Gauche Road)Northern terminus of LA 306
Boutte9.014.5 LA 52 (Paul Maillard Road)Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 632[]

Louisiana Highway 632 marker

Louisiana Highway 632

LocationDes Allemands–Bayou Gauche
Length5.63 mi[1] (9.06 km)
Existed1955–present

Louisiana Highway 632 (LA 632) runs 5.63 miles (9.06 km) in a general east–west direction from LA 631 in Des Allemands to a dead end at the Paradis Canal in Bayou Gauche, St. Charles Parish.[47]

The route heads southeast along Levee Road and crosses both LA 631 Spur (Old US 90) and current US 90 in Des Allemands. Now known as WPA Road, LA 632 turns due east into an area known as Bayou Gauche and intersects LA 306 (Bayou Gauche Road). LA 632 turns north and runs concurrently with LA 306 for a short distance before turning east onto Grand Bayou Road, which it follows to a dead end at the Paradis Canal. LA 632 is an undivided two-lane highway for its entire length.[31][37][47]

The entire highway is in St. Charles Parish.

Locationmi[1]kmDestinationsNotes
Des Allemands0.00.0 LA 631 (Old Spanish Trail)Western terminus
0.20.32
 LA 631 Spur (Old US 90)
0.30.48 US 90 – New Orleans, Morgan City
Bayou Gauche3.25.1 LA 306 south (Bayou Gauche Road)West end of LA 306 concurrency
3.86.1 LA 306 north (Bayou Gauche Road)East end of LA 306 concurrency
5.69.0Dead end at Paradis CanalEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 633[]

Louisiana Highway 633 marker

Louisiana Highway 633

LocationBoutte
Length2.78 mi[1] (4.47 km)
Existed1955–present

Louisiana Highway 633 (LA 633) runs 2.78 miles (4.47 km) in a north–south direction along Magnolia Ridge Road from a local road at Grand Bayou to a junction with US 90 and LA 52 in Boutte, St. Charles Parish. It is an undivided two-lane highway for its entire length.[31][37][48]

The entire highway is in St. Charles Parish.

Locationmi[1]kmDestinationsNotes
​0.00.0Local road at Grand BayouSouthern terminus
Boutte2.84.5 US 90 – New Orleans, Houma
LA 52 (Paul Maillard Road) – Luling		Northern terminus; southern terminus of LA 52
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 634[]

Louisiana Highway 634 marker

Louisiana Highway 634

LocationDes Allemands
Length0.25 mi[49] (400 m)
Existed1955–c. 1960s

Louisiana Highway 634 (LA 634) ran 0.25 miles (0.40 km) in a west–east direction along J.B. Green Road in Des Allemands, St. Charles Parish.[49]

The route connected US 90 and its former alignment, LA 631 (Old Spanish Trail). It was an undivided, two-lane highway for its entire length.[49]

In the pre-1955 state highway system, LA 634 was designated as .[39] LA 634 was created with the 1955 Louisiana Highway renumbering[34] and deleted sometime in the 1960s. However, a similar connector road to the north, LA 635 (formerly ), remains.[37][46]

The entire highway was in Des Allemands, St. Charles Parish.

mi[49]kmDestinationsNotes
0.000.00 LA 631 (Old Spanish Trail) – Des Allemands, ParadisWestern terminus
0.250.40 US 90 – New Orleans, HoumaEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 635[]

Louisiana Highway 635 marker

Louisiana Highway 635

LocationDes Allemands
Length0.26 mi[1] (420 m)
Existed1955–present

Louisiana Highway 635 (LA 635) runs 0.26 miles (0.42 km) in an east–west direction north of Des Allemands, St. Charles Parish.[50]

The route connects US 90 and its former alignment, LA 631 (Old Spanish Trail) between Des Allemands and Paradis. It is an undivided two-lane highway for its entire length.[31][37][50]

In the pre-1955 state highway system, LA 635 was designated as .[39] LA 635 was created in the 1955 Louisiana Highway renumbering[34] following a different connector road immediately to the north that no longer exists.[37][46] A similar connector road to the south, LA 634 (formerly ), was also part of the state highway system until its deletion in the 1960s.[37][46]

The entire highway is in Des Allemands, St. Charles Parish.

mi[1]kmDestinationsNotes
0.000.00 LA 631 (Old Spanish Trail)Western terminus
0.260.42 US 90 – New Orleans, HoumaEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 636[]

Louisiana Highway 636 marker

Louisiana Highway 636

LocationLaPlace
Length2.40 mi[1] (3.86 km)
Existed1955–present

Louisiana Highway 636 (LA 636) is the designation for a pair of state highways composing of LA 636-1 and LA 636-3 that serve Laplace, St. John the Baptist Parish, Louisiana. LA 636-1 is 0.74 miles (1.19 km) long and runs from LA 628 (East 5th Street) east to US 61 (Airline Highway).[51] LA 636-3 begins at LA 44 adjacent to a Mississippi River levee and mostly runs east along this levee to LA 628 and Cardinal Street. This segment is 1.66 miles (2.67 km) long.[52]

Louisiana Highway 637[]

Louisiana Highway 637 marker

Louisiana Highway 637

LocationReserve
Length1.48 mi[1] (2.38 km)
Existed1955–present

Louisiana Highway 637 (LA 637) runs 1.48 miles (2.38 km) in a north–south direction along West 10th Street from LA 44 (River Road) to US 61 (Airline Highway) in Reserve, St. John the Baptist Parish. It is an undivided two-lane highway for its entire length.[42][43][53]

The entire highway is in Reserve, St. John the Baptist Parish.

mi[1]kmDestinationsNotes
0.00.0 LA 44 (River Road) – LaPlace, GaryvilleSouthern terminus
1.52.4 US 61 (Airline Highway) – New Orleans, Baton RougeNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 639[]

Louisiana Highway 639 marker

Louisiana Highway 639

LocationSt. John the Baptist Parish
Length0.40 mi[1] (640 m)
Existed1955–present

Louisiana Highway 639 (LA 639) runs 0.40 miles (0.64 km) in a north–south direction off of LA 18 west of Edgard, St. John the Baptist Parish.

LA 639 is a short and lightly traveled local road that begins just north of the Union Pacific Railroad track and continues northward to LA 18 (River Road). Its only major feature is the old Johnson (later renamed Carroll) Plantation, in which a few slave cabins and an overseer's house remain. The route has been unsigned in recent years.

The entire highway is in St. John the Baptist Parish.

LocationmikmDestinationsNotes
0.00.0Begin state maintenance north of the Union Pacific Railroad tracksSouthern terminus
​0.40.64 LA 18 (River Road)Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 640[]

Louisiana Highway 640 marker

Louisiana Highway 640

LocationEdgard–Reserve
Length2.37 mi[1] (3.81 km)
Existed1955–present

Louisiana Highway 640 (LA 640) runs 2.37 miles (3.81 km) in a north–south direction from LA 3127 in Edgard to a concurrency with LA 18 (River Road). Until 2013, it included a Mississippi River ferry crossing to the junction of LA 44 and LA 53 in Reserve, St. John the Baptist Parish.

LA 640 heads north from LA 3127 near West St. John High School. It intersects LA 18 (River Road) near the St. John the Baptist Parish Courthouse, and had run 0.3 mi west along LA 18 to a ferry road. Until 2013, it crossed the river via the Edgard-Reserve Ferry. LA 640 had ended at the east bank river road (LA 44) at an intersection with LA 53. It is an undivided two-lane highway for its entire length.

The entire highway is in St. John the Baptist Parish.

LocationmikmDestinationsNotes
Edgard0.00.0 LA 3127Southern terminus
2.13.4 LA 18 east (River Road)South end of LA 18 concurrency
2.23.5 LA 18 west (River Road)North end of LA 18 concurrency
Mississippi RiverEdgard-Reserve Ferry
Reserve2.23.5 LA 44 (River Road/Jefferson Highway)
LA 53 north (Central Avenue)		Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 641[]

Louisiana Highway 641 marker

Louisiana Highway 641

LocationLutcher–Gramercy
Length6.9 mi[1] (11.1 km)
Main article: Louisiana Highway 641

Louisiana Highway 642[]

Louisiana Highway 642 marker

Louisiana Highway 642

Location–Grand Point
Length3.75 mi[1] (6.04 km)
Existed1955–present

Louisiana Highway 642 (LA 642) runs 3.75 miles (6.04 km) in a north–south direction from LA 44 at to the end of state maintenance in Grand Point, St. James Parish.[54]

The route heads north from LA 44 at the east bank levee of the Mississippi River and crosses the Canadian National Railway (CN) tracks at grade. 1.3 miles (2.1 km) later, LA 642 intersects LA 3125. It then zigzags to the west and north through an area known as Grand Point. At the end of its route, the highway turns east and becomes a dirt road. State maintenance ends shortly afterward as the road turns again to the north, the local road reaching a boat launch on Blind River.[55] LA 642 is an undivided two-lane highway for its entire length.[26][54][56]

The entire highway is in St. James Parish.

Locationmi[1]kmDestinationsNotes
0.00.0 LA 44 – Gramercy, Lutcher, ConventSouthern terminus
​1.42.3 LA 3125 – Gramercy, Lutcher
Grand Point3.96.3End state maintenance northeast of C. Louque Street, a local roadNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 643[]

Louisiana Highway 643 marker

Louisiana Highway 643

LocationSt. James Parish
Length2.854 mi[57] (4.593 km)
Existed1955–present

Louisiana Highway 643 (LA 643) runs 2.85 miles (4.59 km) in a general east–west direction from LA 20 to the St. James–St. John the Baptist parish line in an area known as . It is an undivided two-lane highway for its entire length.[58][59]

The route once continued further east to a dead end at , but this portion was transferred to local control in 2018 as part of La DOTD's Road Transfer program.[57]


ParishLocationmi[57]kmDestinationsNotes
St. James0.000–
0.069		0.000–
0.111		 LA 20 – Vacherie, ThibodauxWestern terminus
1.5212.448 LA 644Eastern terminus of LA 644
St. James–St. John the Baptist
parish line		​2.8544.593End state maintenanceEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 644[]

Louisiana Highway 644 marker

Louisiana Highway 644

Location
Length1.76 mi[1] (2.83 km)
Existed1955–present

Louisiana Highway 644 (LA 644) runs 1.76 miles (2.83 km) in a general east–west direction from LA 20 to LA 643 in , St. James Parish.[60]

The route heads eastward through Lower Vacherie from LA 20. After 1.3 miles (2.1 km), it turns to the south and ends at an intersection with LA 643, which continues in a general eastward direction to nearby . LA 644 is an undivided two-lane highway for its entire length.[26][56][60]

The entire highway is in , St. James Parish.

mi[1]kmDestinationsNotes
0.00.0 LA 20 – Vacherie, ThibodauxWestern terminus
1.82.9 LA 643 – Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 645[]

Louisiana Highway 645 marker

Louisiana Highway 645

LocationLabadieville
Length2.25 mi[1][61] (3.62 km)

Louisiana Highway 646[]

Louisiana Highway 646 marker

Louisiana Highway 646

Location
Length3.3 mi[62] (5.3 km)
Existed1955–1975
Main article: Louisiana Highway 646

Louisiana Highway 647[]

Louisiana Highway 647 marker

Louisiana Highway 647

LocationChackbay–Choctaw
Length8.3 mi[63] (13.4 km)
Existed1955–1964

Louisiana Highway 647 (LA 647) ran 8.3 miles (13.4 km) in a northwest to southeast direction from LA 20 in Chackbay (shown as Chegby on maps of the time) to Sanchez Road, a local road in an area known as Choctaw.[63]

LA 647 was an undivided two-lane highway for its entire length.

The entire highway was in Lafourche Parish.

Locationmi[63]kmDestinationsNotes
Chegby0.00.0 LA 20 – Thibodaux, VacherieWestern terminus
Choctaw8.313.4End state maintenance east of Sanchez RoadEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 648[]

Louisiana Highway 648 marker

Louisiana Highway 648

LocationThibodaux
Length2.343 mi[64] (3.771 km)
Existed1955–present

Louisiana Highway 648 (LA 648) runs 2.34 miles (3.77 km) in a southwest to northeast direction from LA 20 south of Thibodaux to LA 308 east of Thibodaux.[65]

LA 648 heads east from LA 20 on Percy Brown Road, crossing from Terrebonne Parish into Lafourche Parish. It immediately turns to the northeast and briefly passes through the southeast corner of Thibodaux. At the end of its route, LA 648 intersects LA 1, crosses a bridge over Bayou Lafourche, and terminates immediately afterward at LA 308, which follows the opposite bank. LA 648 is an undivided two-lane highway for its entire length.

The entire above route appears on current La DOTD maps as LA 648 and is signed accordingly in the field; however, the departmental GIS and LRS systems still show most of the route under its former designation of LA 648 Spur. Prior to the 2000s, LA 648 turned northwest from Percy Brown Road onto Acadia Road in Thibodaux and headed back to a terminus at LA 20, existing as a short loop off of that highway. The remainder of Percy Brown Road running northeast to LA 308 was designated as LA 648 Spur, now absorbed by the main route.


ParishLocationmi[64]kmDestinationsNotes
Terrebonne​0.0000.000 LA 20 (West Main Street, West Park Avenue)Western terminus
LafourcheThibodaux0.9631.550North Acadia RoadOfficial mile 0.000 of LA 648 Spur
​2.2603.637 LA 1 – Thibodaux, Raceland
​2.271–
2.317		3.655–
3.729		Bridge over Bayou Lafourche
​2.3433.771 LA 308Eastern terminus; official mile 1.380 of LA 648 Spur
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 649[]

Louisiana Highway 649 marker

Louisiana Highway 649

Location
Length0.07 mi[1] (110 m)
Existed1955–present

Louisiana Highway 649 (LA 649) consists of a swing bridge across Bayou Lafourche in , Lafourche Parish.[66]

The route is 0.07 miles (0.11 km) long, connecting LA 1 and LA 308 which run along the west and east banks of the bayou, respectively. It is an undivided two-lane highway for its entire length.[31][66][67]

In the pre-1955 state highway system, LA 649 was designated as .[68] LA 649 was created in the 1955 Louisiana Highway renumbering[34] and was originally routed across a now-demolished bridge located 0.4 miles (0.64 km) downstream from the current bridge.[67][69] The St. Charles Swing Bridge was constructed in 1996[70] and aligned with the St. Charles Bypass Road that provides a shortcut to LA 24 south of Thibodaux.[66]

The entire highway is in , Lafourche Parish.

mi[1]kmDestinationsNotes
0.000.00 LA 1 – Thibodaux, RacelandSouthern terminus
0.070.11 LA 308 – Thibodaux, RacelandNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[]

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External links[]

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