Highway 146 begins at US 79 north of Stuttgart on the Grand Prairie. The route runs due east as a section line road, immediately crossing railroad tracks and intersecting with Highway 146 Spur. Highway 146 runs east to briefly overlap Highway 33 at Casscoe. The route continues east to the a boat ramp on the White River at Preston Ferry, where it terminates.[4]
Lawrenceville to Noy
Highway 146 begins at Resort Rd at Lawrenceville, on the banks of Maddox Bay and along the eastern limits of the White River National Wildlife Refuge. The route runs east, beginning an overlap with Highway 17 toward Holly Grove. The concurrency ends south of Holly Grove, with Highway 146 turning east, passing the Holly Grove Municipal Airport, and passing through agricultural areas.[5] The route briefly runs along the Monroe/Phillips County line before entering Phillips County. The route passes a swamp before terminating at a junction with Highway 39 at Noy.[6]
A second segment of Highway 146 was created on June 23, 1965, designating a roadway located south of Holly Grove running east as a state highway.[8] This route was extended to the Phillips County line on November 23, 1966.[9] At the request of the Monroe County Judge, the highway was extended west to Lawrenceville on April 27, 1971, in exchange for a truncation of Highway 86 near Clarendon.[10] The route was extended from the Phillips County line to Highway 39 at the request of the Phillips County Judge, in exchange for a truncation of Highway 44 on May 14, 1980.[11]
Highway 146 Spur (AR 146S, Ark. 146S, and Hwy. 146S) is a spur route of 1.35 miles (2.17 km) in Arkansas County. The route begins at Highway 146 and runs southwest, parallel to US 79 into Stuttgart to a junction with US 165, where it terminates. The spur route was created on November 23, 1966 on a former alignment of US 79.[12] Due to an expansion by the St. Louis Southwestern Railway, the roadway was obliterated and shifted onto new right-of-way on November 27, 1974. The railroad donated all right-of-way and constructed the highway in exchange for the Arkansas State Highway Commission allowing the shifted alignment.[13]
^ abArkansas State Highway Commission (January 1, 1932). Official Highway Service Map(TIF) (Map). Arkansas State Highway Commission. Retrieved November 20, 2016.
^ abArkansas State Highway Commission (June 1933). Official Highway Service Map(TIF) (Map). Arkansas State Highway Commission. Retrieved November 20, 2016.
^ abcdeSystem Information and Research Division (2014). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(MDB) on August 29, 2017. Retrieved March 27, 2016.
^Arkansas State Highway and Transportation Department (April 3, 2014). General Highway Map, Arkansas County, Arkansas(PDF) (Map). 1:62500. Arkansas State Highway and Transportation Department. Retrieved November 20, 2016.
^Arkansas State Highway and Transportation Department (April 3, 2014). General Highway Map, Monroe County, Arkansas(PDF) (Map). 1:62500. Arkansas State Highway and Transportation Department. Retrieved November 20, 2016.
^Arkansas State Highway and Transportation Department (April 3, 2014). General Highway Map, Phillips County, Arkansas(PDF) (Map). 1:62500. Arkansas State Highway and Transportation Department. Retrieved November 20, 2016.
"Minutes of the Meeting"(PDF). Arkansas State Highway Commission. 1953–1969. Archived from the original(PDF) on October 1, 2018. Retrieved November 20, 2016.
"Minutes of the Meeting"(PDF). Arkansas State Highway Commission. 1970–1979. Archived from the original(PDF) on November 5, 2011. Retrieved November 20, 2016.
"Minutes of the Meeting"(PDF). Arkansas State Highway Commission. 1980–1989. Retrieved November 20, 2016.