Louisiana Highway 66

LA 66 is an undivided two-lane highway for its entire length.[2] The route is classified as a rural major collector by the Louisiana Department of Transportation and Development (La DOTD). Daily traffic volume in 2013 averaged 1,960 vehicles near the state penitentiary entrance, increasing to a peak 4,200 vehicles near the junction with US 61.[5] The posted speed limit is 55 mph (90 km/h).[2]

The entire route of LA 66 is known as the Tunica Trace Byway in the state-designated system of tourist routes known as the Louisiana Scenic Byways.[6]

In the original Louisiana Highway system in use between 1921 and 1955, LA 66 was designated as State Route 124.[7] It was an addition to the system that was designated in 1926 by an act of the state legislature.[8]

Route 124. Beginning at Baines[sic] Station, Parish of West Feliciana on Route No. 3, thence running in a northwesterly direction to the town of Tunica, Louisiana, thence to Angola State Farm, and along the line as surveyed by the State Highway Commissioner.

— 1926 legislative route description[8]

The Angola State Farm, now Louisiana State Penitentiary, began operations in the early 1900s. Its location was formerly the site of several 19th Century plantations on the east bank of the Mississippi River in West Feliciana Parish. The addition of Route 124 created a state-maintained access road from the prison to the main highway through the area, State Route 3, which became part of US 61 later the same year.[9][10] Route 124 followed the existing Tunica Trace, an old Native American pathway that wound through the area's hilly terrain.[11] A straighter path connecting more directly with the important town of St. Francisville was plotted and added to the state highway system in 1928 as State Route 325.[8][12] However, it was never fully improved as a through route.

Route 124 was an unimproved dirt road when originally designated in 1926. The entire route was gravel surfaced by 1929[13][14] and then paved a decade later, in 1939.[15][16] For most of its existence, Route 124 continued further into the prison grounds than the present LA 66. This extension paralleled the Louisiana and Arkansas Railway line which once traversed the property and crossed the Mississippi River by ferry into Pointe Coupee Parish.[17] The route was truncated to its present terminus around 1953, shortly before the 1955 Louisiana Highway renumbering.[18][19]

LA 66 was created in 1955 as a direct renumbering of former Route 124.[20][21]

La 66—From a point at or near the Angola Penal Farm through or near Tunica and Weynoke[sic] to a junction with La-US 61 at or near Baines[sic].

— 1955 legislative route description[20]

Since then, the route has remained unchanged apart from reconstruction projects over the years which have straightened some of its sharper curves by cutting into the terrain.[3][22] This is especially evident in Tunica, where a bypassed curve still exists as Crescent Road, and in the area immediately west of LA 969. The junction with US 61 has also been moved 0.2 miles (0.32 km) to the north with Parish Road 265 now following the original alignment there.

In 1988, the entire route of LA 66 was designated by the state legislature as the Tunica Trace Scenic Byway within the Louisiana Scenic Byways program.[11] It was officially opened as a scenic route in October of that year with a dedication ceremony that included a representative of the Tunica-Biloxi Indian Tribe.[23] The government of West Feliciana Parish also changed the highway's local name from the generic "Angola Road" to "Tunica Trace" to highlight the route's history.[24]