Louisiana Highway 1050 (LA 1050) runs 4.97 miles (8.00 km) in a north–south direction from LA 440 in Tangipahoa to LA 38 west of Kentwood. The route's mileposts increase from the northern end contrary to common practice.
LA 1050 heads north on Dr. Martin Luther King Drive from LA 440 (Center Street). After exiting the village of Tangipahoa, the highway turns due west at a T-intersection with LA 1051 and crosses over without connecting to I-55. LA 1050 then curves to the northwest and proceeds across LA 1049 to its terminus at LA 38. LA 1050 is an undivided two-lane highway for its entire length.
The route heads north from a T-intersection with LA 1050 located 0.4 miles (0.64 km) outside the village of Tangipahoa. It travels between I-55 to the west and US 51 to the east. After 1.8 miles (2.9 km), LA 1051 enters the town of Kentwood, where it becomes known as 9th Street. The highway continues to a junction with LA 1049, located at the intersection of 9th Street and Collis B. Temple Sr. Road. LA 1051 is an undivided two-lane highway for its entire length.
The route headed east along Camp Moore Road from a point on US 51 located 0.1 miles (0.16 km) north of the village of Tangipahoa. It immediately crossed the Illinois Central Railroad (now the Canadian National Railway) line at grade then turned north alongside it. After passing the entrance to the Camp Moore Confederate Museum, the route terminated at a dead end next to the cemetery gates. LA 1052 was an undivided two-lane highway for its entire length.
Louisiana Highway 1053 (LA 1053) runs 5.56 miles (8.95 km) in a southeast to northwest direction from US 51 in Kentwood to the Mississippi state line west of Osyka.
LA 1053 heads northwest from US 51 (3rd Street) in Kentwood and crosses over without connecting to I-55. After exiting the town limits, LA 1053 curves to the north and proceeds 3.2 miles (5.1 km) to a point on the Mississippi state line at the boundary between Amite and Pike counties. The highway continues as MS 923, a short connector to MS 584 west of Osyka. LA 1053 is an undivided two-lane highway for its entire length.
LA 1067 originally encompassed all of Old Covington Highway, extending west to US 51 Bus. in Hammond. It was truncated to LA 3158 when that route was added to the state highway system during the 1970s. The remainder of LA 1067 was transferred to local control in 2000. Since then, the four-way stop intersection of Old Covington Highway and LA 3158 has been reconfigured as a roundabout without stop signs.
The southern terminus is located at LA 73 (Jefferson Highway) between the two ramps of a half diamond interchange with I-12 (exit 1B). From there, LA 1068 proceeds northeast on Drusilla Lane to its terminus at LA 426 (Old Hammond Highway). It is an undivided two-lane highway for its entire length.
The route heads north on 11th Avenue, the continuation of Mott Street, from a four-way intersection where LA 436 turns east from Mott onto Greenlaw Street. After seven blocks, LA 1069 terminates at an intersection with Bene Street, and the roadway continues northward out of Franklinton as part of LA 430. Bene Street is signed as LA 430 Spur west of this intersection to its connection with LA 25 at Main Street. LA 1069 is an undivided two-lane highway for its entire length.
Louisiana Highway 1075 (LA 1075) runs 6.15 miles (9.90 km) in a north–south direction through unincorporated Washington Parish from LA 21 north of Sun to the Bogalusa city limit. It is an undivided two-lane highway for its entire length.
LA 1075 splits off from LA 21 north of Sun, a village located just across the St. Tammany Parish line. The route heads north and runs parallel to LA 21 through the small community of Rio, where it intersects LA 1074. LA 1075 proceeds to the Bogalusa city limit where a local road, Avenue F, continues into town toward an intersection with LA 60 (West 10th Street).
The LA 1075 designation originally extended north along Avenue F in Bogalusa to the junction with LA 60, but this portion of the route was transferred to the city of Bogalusa in 2015 as part of La DOTD's Road Transfer Program. The remainder of LA 1075 is proposed to be transferred to Washington Parish in the future.
Louisiana Highway 1078 (LA 1078) runs 6.26 miles (10.07 km) in an east–west direction from LA 1077 to LA 25 south of Folsom. Though signed in the field, the concurrency with LA 1077 at its western end is not counted in the official route mileage, resulting in a slightly shorter figure of 5.14 miles (8.27 km).
LA 1078 begins at a T-intersection near the St. Tammany–Tangipahoa parish line that is signed as LA 1077 in all directions. LA 1078 heads northeast concurrent with one branch of LA 1077 for 1.1 miles (1.8 km) then splits off to the southeast at Savannah Road. It continues east along Bennett Bridge Road to its terminus at LA 25 south of Folsom. LA 1078 is an undivided two-lane highway for its entire length.
Louisiana Highway 1080 (LA 1080) ran 3.1 miles (5.0 km) in a north–south direction off of LA 40 east of Folsom. It was an undivided two-lane highway for its entire length.
From the south, LA 1080 began at a dead end near the Bogue Falaya River and headed northward along North Factory Road across LA 40. The route transitioned to a local road at a right-angle curve just beyond an intersection with Graci Road.
Louisiana Highway 1083 (LA 1083) runs 8.30 miles (13.36 km) in a north–south direction from the junction of two local roads south of Waldheim to LA 40 west of Bush.
From the south, LA 1083 begins on Allen Road at an intersection with Lowe Davis Road about midway between Abita Springs and Waldheim. The route heads north and intersects LA 21 (Military Road) at Waldheim. After a brief jog eastward onto LA 21, LA 1083 turns again to the north and follows a winding alignment until reaching its terminus at LA 40. LA 1083 is an undivided two-lane highway for its entire length.
Louisiana Highway 1085 (LA 1085) runs 4.41 miles (7.10 km) in a southwest to northeast direction from LA 22 west of Madisonville to LA 1077 north of Madisonville. The route is bannered north–south.
LA 1085 initially heads north from LA 22 but then curves eastward, crossing over without connect to I-12. It proceeds a short distance further to a junction with LA 1077 just north of the latter's interchange with I-12. LA 1085 is an undivided two-lane highway for its entire length.
Louisiana Highway 1087 (LA 1087) ran 2.3 miles (3.7 km) in a general east–west direction from North Causeway Boulevard to the junction of US 190 and LA 59 in Mandeville.
The route headed southeast on Monroe Street from North Causeway Boulevard. This intersection is located at a point where the East Causeway Approach branches off of that thoroughfare at the north end of the Lake Pontchartrain Causeway bridge across Lake Pontchartrain. After nearly two miles (3.2 km), the route turned northeast onto Girod Street and proceeded four blocks further to a junction with US 190 (Florida Street). Girod Street continues across US 190 as LA 59. LA 1087 was an undivided two-lane highway for its entire length.
Louisiana Highway 1090 (LA 1090) runs 4.52 miles (7.27 km) in a north–south direction from US 190 east of Slidell to the junction of I-59 and US 11 south of Pearl River. The route's mileposts increase from the northern end contrary to common practice.
The route heads north on Military Road from a T-intersection with US 190 at Gause Boulevard. It passes over without connecting to I-10 and parallels I-59 northward toward Pearl River. LA 1090 ends at a diamond interchange where US 11 joins the alignment of I-59 at exit 3. LA 1090 is an undivided two-lane highway for its entire length.
LA 1091 heads northward from US 190 (Gause Boulevard) on Robert Boulevard, an undivided four-lane thoroughfare with a center turning lane. On the way out of Slidell, the roadway narrows to two lanes, and LA 1091 crosses over without connecting to I-12. The route continues north, traveling between I-59 and US 11 until reaching a T-intersection with the latter at the St. Joe Brick Works south of Pearl River.
Louisiana Highway 1093 (LA 1093) consists of two road segments with a total length of 1.32 miles (2.12 km) that are located in the St. Tammany Parish community of Lacombe. A third segment was deleted from the state highway system in 1987.
LA 1093-1 runs 0.83 miles (1.34 km) along Davis Avenue from the junction of US 190 and LA 434 to an intersection with Jackson Street.
^ abcde"Act No. 40, House Bill No. 311". State-Times. Baton Rouge. June 18, 1955. pp. 3B–7B.
^ abcdefgLouisiana Department of Highways Traffic and Planning Section (1952). Tangipahoa Parish (Map) (January 1, 1958 ed.). Louisiana Department of Highways.
^ abcdLouisiana Department of Transportation and Development Office of Multimodal Planning (February 2012). Tangipahoa Parish (North Section)(PDF) (Map). Louisiana Department of Transportation and Development. Retrieved December 20, 2015.
^ abcdefLouisiana Department of Transportation and Development Planning Division (1993). St. Tammany Parish (Northwest Section) (Map) (1995 ed.). Louisiana Department of Transportation and Development.