The ArDOT maintains Highway 75 like all other parts of the state highway system. As a part of these responsibilities, the department tracks the volume of traffic using its roads in surveys using a metric called
average annual daily traffic (AADT). ArDOT estimates the traffic level for a segment of roadway for any average day of the year in these surveys. As of 2019, AADT was estimated to below 1,000 vehicles per day (VPD), except for between Smithdale Street and US 64 in Parkin, where it was estimated as 1,200, and in Marked Tree north of I-555, where it ranges between 4,000 and 5,700 VPD. For reference, the
American Association of State Highway and Transportation Officials (AASHTO), classifies roads with fewer than 400 vehicles per day as a
very low volume local road. No segment of Highway 75 has been listed as part of the
National Highway System, a network of roads important to the nation's economy, defense, and mobility. Highway 75 begins at
Highway 38/
Highway 50 east of
Forrest City and runs north to cross the
Union Pacific Railway tracks at the
unincorporated community of
Round Pond. Continuing north, Highway 75 intersects
U.S. Highway 70 (US 70) at
Hicks Station; the two routes continue east in a
concurrency as a
frontage road to
Interstate 40 (I-40). At I-40 exit 256, Highway 75 turns due north and crosses over I-40 at a
diamond interchange and runs into
Cross County. Highway 75 runs north as a
section line road through rural farmland land in eastern Cross County, serving as the eastern terminus of
Highway 306 at
Gieseck before entering the small town of
Parkin. Highway 75 Spur, the only special route of Highway 75, begins in southern Parkin and runs west from the parent route south of downtown. Highway 75 continues northward under a low clearance railroad bridge ( and along the eastern edge of downtown Parkin to Smithdale Street, where it junctions with the northern end of Highway 75S (heading west) and the western end of
US Highway 64 Business (US 64B, heading east). A short distance north of this junction, Highway 75 forms a concurrency with
US 64 westbound near
Parkin Archaeological State Park and
Native American burial mounds. Highway 75 turns north and begins roughly paralleling the
St. Francis River, intersecting
Highway 42 at
Coldwater and entering
Poinsett County. Once north of the Singer Forest Natural Area, Highway 75 passes through
sectioned farm land and drainage ditches, continuing along the St. Francis River to the small town of
Marked Tree. Highway 75 meets
I-555/
Highway 14 at an interchange. North of this interchange, Highway 75 continues north with Highway 14 into Marked Tree, passing the
Marked Tree Commercial Historic District (listed on the
National Register of Historic Places) and bridging the St. Francis River. North of the river, Highway 75 terminates at the junction of the northern terminus of
Highway 149 and the western terminus of
Highway 140 with Highway 14 continuing eastbound along Highway 140. ==History==