On August 26, 2010, the northern section was extended west 2.9 miles (4.7 km) to US 96 northwest of Center.

On October 26, 2000, by district request, Loop 530 was cancelled and removed from the highway system due to the city of Belton planning utility improvements along the route.

Loop 534, also known as Veterans Highway, is located in Kerr County.

It runs 4.968 miles (7.995 km) from SH 173 south of Kerrville north to I-10.

[25] Loop 534 was designated on May 2, 1977, from FM 689 (now SH 173) southeast of Kerrville north to I-10.

Loop 538 was designated on January 24, 1978, from FM 78, 0.5 miles (0.80 km) east of SH 218, east and northeast to FM 78 near Live Oak Road (now Schertz Parkway) in Schertz.

On November 20, 2014, Loop 539 was cancelled and returned to the city of Cibolo.

It begins northeast of Beasley at an exit ramp off southbound Future I-69/US 59, about 0.3 miles (0.5 km) past the intersection with Daily Road.

[30] Initially one-way, it runs southwest alongside the Union Pacific Railroad tracks.

The route passes through Beasley before intersecting FM 1875 southwest of the city.

Loop 540 then intersects FM 360, beyond which the road again becomes one-way before transitioning into an entrance ramp for southbound Future I-69/US 59.

It begins northeast of Kendleton at an exit ramp off southbound Future I-69/US 59.

It runs southwest along the Union Pacific Railroad tracks, intersecting FM 2919.

Loop 541 continues to the southwest for another 0.6 miles (1.0 km); while the designation has the route connecting to the freeway here, it instead ends at a turnaround.

A paved road goes a short distance past the turnaround before turning sharply to the northwest, connecting with Ben Williams Drive after crossing the railroad tracks.

On March 29, 1988, a 1.1-mile (1.8 km) section from US 87 to FM 380 was removed and returned to the city of San Angelo.

Loop 546 was designated on April 9, 1984, from Loop 250 east and south 3.5 miles (5.6 km) to Wall Avenue, then east 1.3 miles (2.1 km) along Wall Avenue to SH 349 (now Bus.

Both of its termini are at SH 21 within the San Augustine city limits.

On June 21, 1990, Loop 551 was cancelled and transferred to Business I-40-C. Loop 552 was designated on April 18, 1985, from I-40 west of Amarillo east, north, and east 9 miles (14 km) to US 60/US 87, then east and northeast 10.8 miles (17.4 km) along US 60 to its intersection with Loop 552, then southeast 4.6 miles (7.4 km) to I-40 along an old routing of US 66.

Loop 564 was designated on March 25, 2010, on the current route as a replacement of FM 564.

A previous route designated Loop 564 was located in Navarro County.

Loop 567 was designated on November 25, 1986, from US 377 west of Granbury northeast to FM 51 north of town.

On May 25, 2000, by district request, the road was extended 2.25 miles (3.62 km) east and south to Bus.

Loop 571 was designated on September 29, 1987, on the current route as a replacement of FM 454.

Loop 590 was designated on April 26, 1989, from US 77 south and southwest 13.9 miles (22.4 km) along Helen Moore Road (now Paso Real Highway) to US 77/US 83 (now I-69E).

It runs from US 190/I-14 east of Nolanville to US 190/I-14 at Paddy Hamilton Road.

It was designated on January 29, 1991, from US 69 in Greenville south and east 5.2 miles (8.4 km) to SH 34.

However, the city of Greenville rejected construction of the route, and the designation was cancelled on July 15, 1992.

[citation needed] TxDOT projects construction to begin in 2026.

[citation needed] The number was chosen to commemorate the year that Madison County was established.