Louisiana Highway 150 (LA 150) runs 8.83 miles (14.21 km) in an east–west direction from a junction with US 80 and LA 563 in Simsboro to a junction with the concurrent US 80, US 167, and LA 146 in Ruston, Lincoln Parish.[2]
Louisiana Highway 162 (LA 162) runs 9.01 miles (14.50 km) in an east–west direction from LA 3 in Benton to LA 157 at Midway, Bossier Parish.[12]
The route heads east-southeast on Fifth Street from an intersection with LA 3 (Benton Road) in Benton. It loses its name as it crosses out of Benton, curving to the east-northeast at Silver Leaf Drive. It makes twists and turns through northern Bossier Parish before reaching its eastern terminus at a T-intersection with LA 157 at a point known as Midway. LA 162 is an undivided two-lane highway for its entire length.
The route begins at an intersection with Gorton Road, south of Lake Bistineau State Park. It heads west for 1.1 miles (1.8 km) before turning to the north at an intersection with LA 527. It makes twists and turns through southwestern Webster Parish before entering the village of Doyline. LA 163 continues through Doyline for 1.8 miles (2.9 km) before reaching its northern terminus at an intersection with LA 164. LA 163 is an undivided two-lane highway for its entire length.
The route heads south-southeast from an intersection with US 79/US 80 in the eastern portion of Bossier Parish. It intersects LA 3227 and continues south-southeast for 1.0 mile (1.6 km) before curving to the east at an intersection with LA 614. It begins to parallel the Kansas City Southern railroad tracks and after 1.4 miles (2.3 km), it enters Webster Parish. It intersects LA 163 in the village of Doyline. The route ends 6.7 miles (10.8 km) later at an intersection with US 371 in Sibley. LA 164 is an undivided two-lane highway for its entire length.
Louisiana Highway 166 (LA 166) ran from the Bossier-Webster parish line southwest of Doyline to a point near Lake Bistineau. It is now Parish Line Road.
The route heads northeast from LA 1 in the village of Rodessa, immediately crossing the Kansas City Southern railroad tracks before turning east at Pitts Road. It makes several twists and turns through northern Caddo Parish before having an interchange with I-49 at Exit 245. It curves to the north and then to the east-southeast, before terminating at US 71 in the village of Ida. LA 168 is an undivided two-lane highway, except for its interchange with I-49 where it briefly becomes a divided four-lane highway.
The route begins at an intersection with LA 172 in northwestern DeSoto Parish, crossing into Caddo Parish 2.1 miles (3.4 km) later. From here, it makes twists and turns through southwestern Caddo Parish, intersecting LA 789 and LA 525 south of and at Spring Ridge, respectively. 7.9 miles (12.7 km) north of Spring Ridge, it enters the town of Greenwood. It then begins a 0.5 miles (0.80 km) concurrency with US 79/US 80 through Greenwood before splitting off to the north just south of an interchange with I-20 at Exit 3. After this interchange, LA 169 then begins a generally northward course for 16.4 miles (26.4 km) before entering the town of Mooringsport. It gains the local name of Greenwood Street, turning east onto Jennings Street at an intersection with LA 767. It intersects LA 538, immediately crossing the Kansas City Southern railroad tracks before continuing east out of Mooringsport. At an intersection with LA 1, LA 169 dips to the south before curving back to the east. On both sides of LA 1, there are old remnants of LA 169 that are now local roads. 4.5 miles (7.2 km) after this intersection, LA 169 has an interchange with the newly constructed section of I-49 at Exit 223. LA 169 continues east for a final 0.8 miles (1.3 km) before terminating at US 71 northwest of Dixie. LA 169 is an undivided two-lane highway, except for its interchange with I-49 where it briefly becomes a divided four-lane highway.
Louisiana Highway 170 (LA 170) runs 14.23 miles (22.90 km) in an east–west direction from the Texas state line west of Vivian to a junction with US 71 and LA 3049 in Gilliam, Caddo Parish.[17]
The route heads east from the Texas state line until curving to the southeast upon entering Vivian, becoming Tennessee Avenue. 0.4 miles (0.64 km) later, it becomes concurrent with LA 1 (Pine Street), heading south through Vivian before becoming concurrent with LA 2 at Camp Road. 0.2 miles (0.32 km) later, LA 2 and LA 170 split; LA 2 heads northeast toward Hosston, while LA 170 continues southeast, becoming Pardue Street. After 7.3 miles (11.7 km), it interchanges with I-49 at Exit 231. After this, it curves to the north and then to the northeast, before ending at US 71 and LA 3049 in the village of Gilliam. LA 170 is an undivided two-lane highway, except for its interchange with I-49 where it briefly becomes a divided four-lane highway.
Louisiana Highway 172 (LA 172) runs 8.48 miles (13.65 km) in an east–west direction from the Texas state line west of Keachi to a junction with LA 5 and LA 789 in Keachi, DeSoto Parish.[18]
The route heads north from US 171 just outside Many and intersects LA 120 in Belmont. It proceeds north through Pleasant Hill, where it intersects LA 174, and crosses from Sabine Parish into DeSoto Parish shortly afterward.[21][22][26] The highway begins to take a more northwesterly course in DeSoto Parish and passes through Pelican on the way to Mansfield.[25][26][27]
In Mansfield, LA 175 intersects US 84 and turns west to follow that highway briefly before resuming a northern course through points such as Bayou Pierre and Holly.[25][26][27] Just north of Kingston and a junction with LA 5, LA 175 passes through an interchange with I-49, connecting to Shreveport and Alexandria.[25][26][28] The highway proceeds northeast through Frierson into Caddo Parish, where it reaches its terminus at LA 1 southeast of Shreveport.[25][26][27][29]
Louisiana Highway 176 (LA 176) runs 4.74 miles (7.63 km) in a north–south direction in Lafayette, located in Lafayette Parish.[30] It parallels US 167, the city's primary north–south highway, from a point near the downtown area to the northern limit at Carencro. (North of I-10, US 167 is co-signed with I-49.)
The route begins at US 90 and US 167, which run concurrently along Northwest and Northeast Evangeline Thruway, a couplet of one-way streets. LA 176 initially heads northeast along Jefferson Boulevard as an undivided four-lane highway. After three blocks, it turns north onto Moss Street and passes along the west side of Lafayette's City Park, crossing the Louisiana and Delta Railroad (LDRR) tracks immediately afterward. 1.2 miles (1.9 km) later, LA 176 intersects West/East Alexander Street and widens to accommodate a center turning lane. Soon afterward, the highway dips below grade and crosses underneath I-10 just east of Exit 103. LA 176 continues north for 2.2 miles (3.5 km) to an intersection with LA 98 (East Gloria Switch Road) on the Lafayette–Carencro line. LA 98 connects to Exit 2 on I-49/US 167 located 1.0 mile (1.6 km) to the west.[30][31][32]
In the pre-1955 state highway system, the current route of LA 176 made up of the entirety of former State Route 675 and State Route C-1384.[33] LA 176 was created in the 1955 Louisiana Highway renumbering,[34] but it was originally a short connector between LA 94 and the junction of US 90 and US 167 in downtown Lafayette.[35] When US 90 and US 167 were moved onto the Evangeline Thruway around 1964, LA 176 took over much of the original route of US 167.[36][37] For the next 45 years, the route comprised only the portion of Jefferson Boulevard between Evangeline Thruway and the intersection of Simcoe and Surrey Streets (the former junction of LA 94 and LA 728-8). In 2009, a further re-alignment of routes in the area resulted in the LA 176 designation replacing that of former LA 728-1, greatly lengthening the route.[31]
The route is a short connector between US 71 and US 165 at the point where the two highways diverge in Pineville, just north of Alexandria. It is an undivided two-lane highway for its entire length.[22][40][41]
As its local name indicates, the route was once a small part of the historic Jefferson Highway auto trail which extended from New Orleans to Winnipeg, Manitoba, Canada in the late 1910s and 1920s. When the original state highway system was created in 1921, it became part of States Routes 1 and 5. In 1926, it also served as part of the original alignment of US 71 until the completion of the O.K. Allen Bridge over the Red River in the 1930s.
LA 180 was created in the 1955 Louisiana Highway renumbering,[34] and its route originally followed the entirety of Jefferson Highway between US 165 Business and US 71.[41][42] The deleted portion, though no longer state-maintained, retains destination signage directing traffic from US 165 Business toward US 71 and US 165, heading toward Shreveport and Monroe, respectively.[40]
Louisiana Highway 182 (LA 182) runs 173.41 miles (279.08 km) from LA 29 in Whiteville to US 90 north of Raceland.
LA 182 had two hyphenated auxiliary routes, both comprising former alignments, commissioned in 2015 and decommissioned in 2022.[44] Both routes are located in Broussard and Lafayette:
LA 182-1 (1.029 miles (1.656 km)): West Pinhook Road from LA 182 (West Pinhook Road/Southpark Road) and LA 89-1 (Youngsville Highway/Southpark Road) to South Bernard Road and West Main Street.
LA 182-2 (1.342 miles (2.160 km)): East Main Street from South De Porres Street to St. Etienne Road and LA 182 eastbound.
Louisiana Highway 183 (LA 183) runs 9.93 miles (15.98 km) in a north–south direction from a point just south of I-20 at Holly Ridge to LA 134 west of Epps in Richland Parish.[45]
Louisiana Highway 184 (LA 184) runs 3.38 miles (5.44 km) in a north–south direction along Chaffee Road east of Leesville, Vernon Parish.[46] It connects Fort Johnson North, an area within the Fort JohnsonU.S. Army base with LA 28, the main highway between Leesville and Alexandria. Though its geographic direction is north–south, LA 184 is signed as an east–west route and treated accordingly in the La DOTD route log.
The route begins at the concurrent LA 8 and LA 28, 4.3 miles (6.9 km) east of US 171 in Leesville. Eastbound LA 28 connects to Alexandria in neighboring Rapides Parish. LA 185 heads south and intersects LA 468 (Slagle Road). 2.5 miles (4.0 km) later, it reaches the guard house at the entrance to Fort Johnson. State maintenance ends a short distance later at an intersection with Pendleton Drive, which leads to a residential area within the base.[22][46][47]
Louisiana Highway 185 (LA 185) ran 1.04 miles (1.67 km) in a northwest to southeast direction along Northgate Road in Bossier City, Bossier Parish.[50] It connected Barksdale Air Force Base to LA 72, which leads to several main highways in the area. Destination signage on LA 72 also directs motorists onto Northgate Road to reach the Eighth Air Force Museum located within the base.
The route began at LA 72 (Old Minden Road) two blocks east of LA 3105 (Airline Drive), which connects to nearby I-20 at Exit 22. LA 185 headed southeast as an undivided four-lane highway and gained a center turning lane as it entered a residential neighborhood. It proceeded along the west side of Barksdale AFB until it reached the north gate of the facility.[25][50][51]
^ abSabine Parish (North Section)(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved October 17, 2013.
^Natchitoches Parish (North Section)(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved October 17, 2013.
^Red River Parish(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved October 17, 2013.
^ abcDeSoto Parish (East Section)(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved October 17, 2013.
^DeSoto Parish (West Section)(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved October 17, 2013.
^Caddo Parish (South Section)(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved October 17, 2013.
^ abLafayette Parish(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved November 5, 2013.
^Lafayette Parish (Map) (January 1, 1955 ed.). Cartography by Department of Highways Traffic and Planning Section. Louisiana Department of Highways. 1953.
^ abcd"Act No. 40, House Bill No. 311". State-Times. Baton Rouge. June 18, 1955. pp. 3B–4B.
^Louisiana Highways: Interim Road Map (Map). Cartography by Louisiana Department of Highways. Louisiana Department of Highways. 1955.
^Louisiana (Map). Cartography by Louisiana Department of Highways. Louisiana Department of Highways. 1963.
^Louisiana (Map). Cartography by Louisiana Department of Highways. Louisiana Department of Highways. 1965.
^ abRapides Parish (East Section)(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved September 27, 2013.
^Rapides Parish (North Section) (Map) (January 1, 1958 ed.). Cartography by Department of Highways Traffic and Planning Section. Louisiana Department of Highways. 1956.
^Louisiana Department of Transportation and Development (2021). LADOTD Bing Maps Tool (Map). Retrieved July 13, 2022.
^Louisiana Department of Transportation and Development 2015 Data (2022). LADOTD Bing Maps Tool (Map).{{cite map}}: CS1 maint: numeric names: authors list (link)
^ abVernon Parish (East Section)(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved October 31, 2013.
^Vernon Parish (North Section) (Map) (January 1, 1955 ed.). Cartography by Department of Highways Traffic and Planning Section. Louisiana Department of Highways. 1947.
^Vernon Parish (North Section) (Map) (January 1, 1958 ed.). Cartography by Department of Highways Traffic and Planning Section. Louisiana Department of Highways. 1956.
^ abBossier Parish (South Section)(PDF) (Map). Cartography by La DOTD Office of Multimodal Planning. Louisiana Department of Transportation and Development. February 2012. Retrieved October 30, 2013.
^Bossier Parish (Map) (January 1, 1955 ed.). Cartography by Department of Highways Traffic and Planning Section. Louisiana Department of Highways. 1949.
^Bossier Parish (Map) (January 1, 1958 ed.). Cartography by Department of Highways Traffic and Planning Section. Louisiana Department of Highways. 1957.
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