FM 1900 was designated on December 13, 1956, from the Boulevard at Pleasure Island in Port Arthur south to a point near Sabine Pass.

The road enters southwestern Upton County approximately 1.6 miles (2.6 km) south of its northern terminus with FM 305 along the southern edge of McCamey.

[9] A previous route numbered FM 1902 was designated on November 20, 1951, from US 75 (now SH 75) at Crabbs Prairie west 6.5 miles (10.5 km) to a road intersection.

FM 1906 was cancelled on June 30, 1954, and removed from the highway system by the request of the Uvalde County Commissioner's Court.

It runs from US 277 north of Eagle Pass westward to the entrance to the county's hydroelectric power plant.

On August 24, 1955, a 6.0-mile (9.7 km) section from Union Grove Church north to FM 347 near Jacksonville was added.

FM 1912 turns west at St. Francis Avenue and continues to run in a western direction before ending at Loop 335.

FM 1912 was designated on December 18, 1951, traveling from US 60 southward to the Randall County line at a distance of 4.8 miles (7.7 km).

FM 1913 was designated on November 20, 1951, from US 87 and SH 354 at Four Way east 6.3 miles (10.1 km) to the Canadian River Gas Company Plant.

In Foard County, the highway generally runs parallel to the North Wichita River, ending at an intersection with FM 267.

[52] FM 1923 was designated on December 18, 1951, from SH 152 west of Stinnett north 5.5 miles (8.9 km) to a road intersection.

On June 28, 1963, the road was extended north 0.9 miles (1.4 km) to the northern city limit of McAllen and a break was added at FM 495 (it was removed on November 16, 1965).

A previous route numbered FM 1929 was designated on December 18, 1951, from US 287 at Goodnight north 7.7 miles (12.4 km) to the Salt Fork of the Red River.

[69] The next use of the FM 1935 designation was in Montague County, from SH 59 in Bowie north 3.8 miles (6.1 km) to a road intersection.

FM 1936 was designated on December 18, 1951, from SH 158 at Smith Chapel south to US 80 (now I-20), 2 miles (3.2 km) west of Odessa.

On November 5, 1971, the road was extended southeast 5.0 miles (8.0 km) from US 80, but this extension was cancelled on July 31, 1975, as the county could not acquire right-of-way for it.

[74] A previous route numbered FM 1937 was designated on December 18, 1951, from US 84 in Farwell south and west 0.3 miles (0.48 km) to the Texas/New Mexico state line.

On September 5, 1973, a section from SH OSR to FM 974 was added, but was cancelled on January 22, 1976, by request of the Brazos County Court.

FM 1942 was designated on November 20, 1951, from SH 146 at Mont Belvieu west 3.2 miles (5.1 km) to the Harris County line.

A previous route numbered FM 1948 was designated on January 18, 1952, from SH 171 at Oceola, southwest 5.1 miles (8.2 km) to a road intersection.

A previous route numbered FM 1949 was designated on November 20, 1951, from SH 7 at Ratcliff northwest 3.6 miles (5.8 km) to Tadmor.

FM 1952 was designated on April 24, 1953, from SH 36 at Wallis 1.8 miles (2.9 km) to the Fort Bend County line.

A previous route numbered FM 1955 was designated on February 20, 1952, from SH 25 2.7 miles (4.3 km) to Lake Kickapoo Dam.

[97] A previous route numbered FM 1957 was designated on November 20, 1951, from US 180 east of Gail, south 8.5 miles (13.7 km) to Union School.

On November 21, 1956, the road was extended 17.1 miles (27.5 km) east to SH 321 in Dayton, replacing a section of FM 1008.

The road, along with RM 1973, was removed from the state highway system and given to Crockett County on March 30, 2023, to cover construction costs for the I-10 eastbound exit 365 project, which has been completed.

[111][112] A previous route numbered FM 1965 was designated on October 21, 1952, from SH 87 in Hemphill east 5.1 miles (8.2 km) to a road intersection.

[121][123][124] The road was given to Crockett County, along with RM 1964, on March 30, 2023, to cover the construction costs for the I-10 eastbound exit 365 project, which has been completed.

[139] A previous route numbered FM 1985 was designated on December 17, 1952, from US 290 in Giddings northeast 7.0 miles (11.3 km) towards Dime Box.

The road begins at US 80 in downtown Marshall and turns northeast eventually ending at FM 134 east of Scottsville.