The highway crosses North Rolling Fork for the last time as the route veers south and follows Shelby Branch to near the Boyle–Casey county line.

Like the western segment, the eastern portion begins at a dead end near a rail spur terminus, this time in the headwaters of Catron Creek.

The highway veers east again and crosses Bacon Creek west of its intersection with KY 381 north of Lynnville.

KY 87 passes through Austin before reaching its northern terminus at US 31E (Scottsville Road), with the entrance to the Barren River Lake State Resort Park straight ahead.

[21] That designation has since relocated to a route in north-central Monroe County as KY 87 was extended to the state line in that area, along with its other section near Bugtussle and Gamaliel.

KY 87's original northern terminus in southern Barren County was located 0.8 miles (1.3 km) of Pageville.

KY 96 heads northeast on Orndorff Mill Road and crosses Whippoorwill Creek, a tributary of the Red River.

KY 102 continues as Allensville Road through the eponymous village, where the route intersects at grade an R.J. Corman Railroad Group line and crosses Rum Spring Creek.

The highway has a grade crossing of a rail line, where the route has a pair of right angle turns, then leaves Auburn at its intersection with US 68 and KY 80 (Bowling Green Road).

The highway continues northeast and crosses Long Lick Creek before reaching its northern terminus at KY 261 near Kirk.

The western segment extends 11.090 miles (17.848 km) from KY 54 at Shreve east to a dead end at Rough River Lake near Fentress McMahan.

KY 112 heads northeast along Ilsley Road, which simultaneously passes over Copperas Creek and under I-69 (Western Kentucky Parkway).

KY 112 follows Main Street through its junction with KY 1337 (McEuen Avenue), crosses Clear Creek, intersects a CSX rail line, and reaches its northern terminus at US 41 (Hopkinsville Road), which splits into a one-way pair with northbound US 41 following Main Street.

[1][37][38] Kentucky Route 113 is a 4.449-mile-long (7.160 km) highway with rural secondary and supplemental road sections in eastern Letcher County.

[1][39][40] Kentucky Route 116 is a 13.726-mile-long (22.090 km) rural secondary highway on the southern rim of Fulton County, much of which runs atop the Kentucky–Tennessee state line.

The highway crosses Wallace Fork and Sugar Creek before reaching its terminus at KY 91 (Princeton Road) at Bainbridge.

The highway crosses Goose Creek and intersects the Paducah & Louisville Railway before reaching its northern terminus at KY 91 (Hopkinsville Road) southeast of the city of Princeton.

[1][45][47][46][48] Kentucky Route 129 is a 19.060-mile-long (30.674 km) L-shaped rural secondary highway on the southern rim of Fulton, Hickman, and Graves counties, much of which runs atop the Kentucky–Tennessee state line.

In Graves County, the highway meets the south end of KY 943 and follows the state line to a four-way intersection in the hamlet of Dukedom.

The highway veers west at the south end of the eastern segment of KY 137 (Bethel Hill Road) and crosses Turkey Creek.

KY 135 crosses Long Branch and continues north toward the Ohio River until the riverside city of Carrsville.

KY 148 crosses Brush Run in the rural neighborhood of Clark Station before veering away from the railroad as the route leaves the city of Louisville and enters Shelby County, where the highway follows Fisherville Road.

KY 149 heads east along Lockards Creek Road through the valley of the eponymous stream to its headwaters at Hector Gap.

The highway fully enters Henry County and crosses the Little Kentucky River into the village of Sulphur, where the route runs concurrently north with KY 1606 (Fallen Timber Road) parallel with a CSX rail line.

The highway meets the north end of KY 888 (Buffalo Trace Road) before entering Mason County.

The highway crosses Elk Spring Creek into the city of Monticello and reaches its northern terminus at KY 90 Bus.

[1][87][79][88][80] Kentucky Route 175 is an L-shaped, 28.247-mile-long (45.459 km) rural secondary highway in western and northern Muhlenberg County.

The two highways head east concurrently, then KY 175 splits north and meets the Western Kentucky Parkway at a modified diamond interchange, within which the route crosses Thompson Creek again.

The highway passes through Peabody Wildlife Management Area, at the north end of which the route heads east concurrently with KY 70.

KY 175 crosses Cypress Creek and intersects an abandoned Louisville and Nashville Railroad line before reaching its northern terminus at US 431 south of Stroud.