The highway travels in a northwestern direction, intersects SH 22, then has a brief overlap with FM 219 near Fairy.

Leaving Fairy, FM 1602 continues to pass by farmland in rural Hamilton County before ending at US 281 just south of Hico.

In 1952, FM 1602 was further extended 5.1 miles (8.2 km) southeastward to SH 36 in Jonesboro, bringing the highway to its current length.

The highway ran north from FM 1153 near Seymour northward 1.0 mile (1.6 km) to a point in Baylor County.

[7] FM 1604 was designated again on November 20, 1956, running east from US 87 (now concurrent with I-10) to US 281 at a distance of approximately 8.2 miles (13.2 km).

A previous route numbered FM 1622 was designated on May 23, 1951, from US 281 south of Twin Sisters west to Kendall (now Kendalia).

[36] It travels to the south into Stonewall, where it crosses Ranch Road 1, and has a one-block eastward concurrency with US 290 before continuing southward.

It passes FM 1327 and then continues north 4.7 miles (7.6 km) to its terminus at a dead end right next to the intersection of US 183 and William Cannon Drive, near the community of Colton south of Austin-Bergstrom International Airport.

[41] FM 1625 originally had its northern terminus at US 183 in Colton, but it was truncated 200 feet (61 m) to a dead end circa 2020 after William Cannon Drive was extended to intersect US 183.

On November 20 of that year, FM 1630 was extended southwest 3.8 miles (6.1 km) to another road intersection.

On October 26, 1954, the highway was extended 4.5 miles (7.2 km) to a road intersection north of China Spring.

FM 1639 was designated on May 23, 1951, "officially" running from Texas State Highway 135 (but actually from Farm to Market Road 850)[nb 6] in Overton north to SH 31.

The highway begins at Spur 529 in Rosenberg and follows a city street east to FM 762 in Richmond.

FM 1640 begins at Spur 529 on the western edge of Rosenberg and follows Avenue I east for most of its length.

This stretch of Avenue I passes the administration building for the Lamar Consolidated Independent School District and Traylor Stadium's south grandstand.

A previous route numbered FM 1643 was designated on May 23, 1951, from Loop 177 at Moscow west 5.9 miles (9.5 km) to a road intersection.

It connects the north end of CR 1211, at a point roughly 1.8 miles (2.9 km) south of Arcadia), with US 59/US 84 east of Timpson.

A previous route numbered FM 1648 was designated on May 23, 1951, from SH 16 in Cherokee west 10.5 miles (16.9 km) to a county road.

Farm to Market Road 1652 (FM 1652) is located entirely Van Zandt County.

The second use of the FM 1657 designation was in Hood County, from SH 144 in Granbury southwest 4.7 miles (7.6 km) to a road intersection.

On February 21, 1952, the road was extended 2.0 miles (3.2 km) northwest to SH 31 in Mount Calm, replacing Spur 117.

A previous route numbered FM 1663 was designated on May 23, 1951, from SH 14 at Kosse northwest 5.5 miles (8.9 km) to a road intersection at Coit.

A previous route numbered FM 1673 was designated on May 23, 1951, from US 277, 1 mile (1.6 km) north of Bronte, to the Runnels County line.

On July 1, 1969, the road was extended east 13.7 miles (22.0 km) over a former section of US 290 to US 377/Loop 481 north of Junction.

On November 25, 1975, a 2.7-mile (4.3 km) section from RM 864 north to SH 29 (now US 190) was added, but this was cancelled on January 24, 1978.

From its northern terminus at US 67 west of Big Lake, it runs approximately 13 miles (21 km) before state maintenance ends.

The route was extended to the Crockett County line on October 29, 1953, and the designation was changed to RM 1676 on December 15, 1959.

FM 1689 was designated on May 23, 1951, from US 283 (now US 183) in May eastward 3.6 miles (5.8 km) to a road intersection at the Comanche County line.

Farm to Market Road 1692 (FM 1692) is located in Tom Green and Runnels counties.

A previous route numbered FM 1698 was designated on May 23, 1951, from SH 11 at Como south 5.5 miles (8.9 km) to a county road.