Loop 305 begins running concurrent with US 57 before turning off onto North Pryor Avenue.

The highway continues along North Pryor Avenue until ending at an intersection with US 83 near the town's northern boundary.

Loop 306 begins on the north side of San Angelo, at the US 67/277 interchange, and continues south on the eastern edge of town.

US 67 (Sherwood Way) overpass, however the freeway continues and is signed as US 67, Houston Harte Expressway; named after the San Angelo-native publishing magnate.

TxDOT upgraded portions of Loop 306 to expand it from a two-lane road to a four-lane divided highway.

On June 14, 1968, Loop 311 was cancelled and removed from the highway system due to the completion of the rerouting of SH 42.

On February 28, 1973, the section from US 290 west of Brenham to Market Street was transferred to SH 105.

The route headed southeast on a two-lane undivided road that became Main Street.

On August 29, 1958, the road was extended southwest 3.5 miles (5.6 km) to FM 2173 near Macdona.

On July 24, 1984, the road was extended 10 miles (16 km) north, northeast and east to US 287, replacing a second section of FM 1719 and completing the loop around Amarillo.

[35] Through trucks traveling east and west are directed onto this loop, as they are prohibited on SH 105 inside Conroe.

On May 14, 1990, the route description was modified to show that SH 46 was rerouted concurrent with Loop 337.

On February 25, 1992, the road was extended west and north to I-20, completing its current route.

Loop 340 was designated on September 27, 1960, running from US 84 southeast and east to US 77 south of Waco.

On February 26, 1964, the road was extended northwest 5 miles (8.0 km) to US 84 east of Bellmead, replacing Loop 232.

On February 29, 1968, the road was extended northwest 1.7 miles (2.7 km) to FM 3051, west of US 81.

On November 10, 1986, the section from SH 71 north and east to I-35 was removed from the highway system and returned to the city of Austin.

The highway is known locally as Main Street and runs through the town's central business district.

On December 18, 2014, the section from Balcones Heights south to I-10 was removed and returned to the city of San Antonio and the remainder was redesignated as Spur 345.

Loop 361 was designated on June 25, 1962, from SH 90/FM 1696 in Bedias west and south to FM 1696.

Loop 367 was cancelled six months later by district request and transferred to US 67 when it was rerouted; the former route of US 67 became Bus.

Loop 368 was designated on August 1, 1962, from I-35 at Fratt southwest along old US 81 to I-35 and Broadway as a replacement of US 81 when it was rerouted east.

On December 18, 2014, the section from Alamo Heights to I-410 was planned to be removed from the highway system.

This section was to be removed when construction was complete, but in January 2022, TxDOT reversed its decision and retained its jurisdiction as San Antonio did not provide the required acceptance letter for the project.

Loop 370 was designated on September 25, 1962, from US 287 near northwestern Iowa Park east via Wichita Falls to SH 79/Loop 165.

Loop 375 is a beltway that partially encircles the city of El Paso, Texas.

Loop 378 was designated on December 4, 1968, from US 87 north of San Angelo along Chadbourne St to US 87 at Washington Drive as a replacement of US 87 when it was rerouted.

Loop 395 was designated on December 20, 1963, from I-40 and Tee Anchor Boulevard along old US 287 to Pierce Street.

77, La Salle Avenue, and Circle Road, as Valley Mills Drive.

The highway has an interchange with Spur 298 (Franklin Avenue), then intersects US 84 (Waco Drive), passing by several commercial and retail areas as it reaches Bosque Boulevard.