List of state highways in Louisiana (600–649)

Louisiana Highway 600 (LA 600) runs from Parhams to Lismore. ==Louisiana Highway 601==

Louisiana Highway 601 (LA 601) runs runs in a north–south direction from Eakers Street and Crothers Drive near I-20 and LA 602-1 in Richmond, along Crothers Drive, to and Johnson Street to US 65 (South Cedar Street/South Chestnut Street) in downtown Tallulah. LA 601 also serves as the eastern terminus for LA 3202 (Felicia Avenue). LA 601 first appeared on the official state highway map in 1976, running between US 65 in Tallulah, to LA 602 in Richmond, south of present day I-20 (which was under construction at the time). In 1977, LA 601 was truncated to its current terminus after I-20 was completed, cutting off the southern section of the route. This former section of LA 601 is now known as Eaker Road and is locally maintained. ;Major intersections ==Louisiana Highway 602==

Louisiana Highway 602 (LA 602) presently consists of two segments of state highways (LA 601-1 and LA 602-2) in Madison Parish that connect I-20 and US 80. The two segments of this road previously connected on a road (known only as LA 602 at the time) south of I-20 paralleling Brushy Bayou and Walnut Bayou. LA 602 first appeared on state highway maps in 1960, utilizing this route. LA 602 ran in total length. Louisiana Highway 602-1 Louisiana Highway 602-1 (LA 602-1) () 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. ;Major intersections Louisiana Highway 602-2 Louisiana Highway 602-2 (LA 602-2) () runs inside Mound between I-20's exit 182 and US 82. ;Major intersections ==Louisiana Highway 603==

Louisiana Highway 603 (LA 603) runs from Quimby to Richmond. ==Louisiana Highway 604==

Louisiana Highway 604 (LA 604) runs from St. Joseph to Lake Bruin. ==Louisiana Highway 605==

Louisiana Highway 605 (LA 605) runs 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. 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. ==Louisiana Highway 606==

Louisiana Highway 606 (LA 606) runs at Lake Bruin. ==Louisiana Highway 607==

Louisiana Highway 607 (LA 607) runs in an east–west direction from US 65 to LA 605 north of Lake Bruin, Tensas Parish. 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. ==Louisiana Highway 608==

Louisiana Highway 608 (LA 608) runs from Lake St. Joseph to Balmoral. ==Louisiana Highway 609==

Louisiana Highway 609 (LA 609) runs in Dunn. ==Louisiana Highway 610==

Louisiana Highway 610 (LA 610) runs in Swampers. ==Louisiana Highway 611==

Louisiana Highway 611 (LA 611) is a collection of three current and ten former state-maintained streets in Jefferson, Metairie, and New Orleans. All thirteen routes were established with the 1955 Louisiana Highway renumbering. ==Louisiana Highway 612==

Louisiana Highway 612 (LA 612) runs from Bossier City to Sligo. ==Louisiana Highway 613==

Louisiana Highway 613 (LA 613) was a collection of four state-maintained streets in Metairie and New Orleans established with the 1955 Louisiana Highway renumbering. All four routes have since been deleted from the state highway system. ==Louisiana Highway 614==

Louisiana Highway 614 (LA 614) runs in Haughton. ==Louisiana Highway 615==

Louisiana Highway 615 (LA 615) runs 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. ==Louisiana Highway 616==

Louisiana Highway 616 (LA 616) runs from Claiborne to West Monroe. ==Louisiana Highway 617==

Louisiana Highway 617 (LA 617) runs in West Monroe. ==Louisiana Highway 618==

Louisiana Highway 618 (LA 618) runs in Winnsboro. ==Louisiana Highway 619==

Louisiana Highway 619 (LA 619) was a state highway that served St. Bernard Parish. It spanned in a west to east direction along the shore of Lake Borgne near what is now known as Old Shell Beach. ==Louisiana Highway 620==