List of state highway loops in Texas (500–9999)

Loop 500 is located in Shelby County. It runs from US 96 northwest of Center to SH 7 southwest of Center.

Loop 500 was designated on April 29, 1971 as a loop off SH 7 in Center. On August 26, 2010 the northern section was extended west 2.9 miles to US 96 northwest of Center.

Loop 505 is located in Newton County. It runs from SH 87 northeast of Newton to SH 87 southwest of Newton.

Loop 505 was designated on August 31, 1972 on the current route along an old routing of SH 87; the route was signed as SH 87 Business rather than Loop 505.

Loop 506 was designated on May 31, 1972 as a loop off US 81/US 287 in Rhome. Instead of signing the route as Loop 506, the section north of Spur 440 was signed as US 81/US 287 Business and the section south of Spur 440 was also signed as US 81/US 287 Business as well as SH 114 Business. Loop 506 was cancelled on June 21, 1990 and transferred to Business US 81-E.

Loop 507 was designated on August 31, 1972 as a loop off SH 6 in Bryan-College Station. The route was signed as SH 6 Business rather than Loop 507. On June 21, 1990 Loop 507 was cancelled and transferred to Business SH 6-R.

Loop 508 was designated on August 31, 1972 as a loop off SH 6 in Navasota. The route was signed as SH 6 Business rather than Loop 508. On June 21, 1990 Loop 508 was cancelled and transferred to Business SH 6-S.

Loop 509 was designated on July 31, 1972 as a loop off SH 78 in Copeville along an old routing of SH 78. on June 21, 1990 Loop 509 was cancelled and transferred to Business SH 78-F.

Loop 512 was designated on November 3, 1972 as a loop off US 59 in Splendora along an old routing of US 59. The route was signed as US 59 Business rather than Loop 512. On June 21, 1990 Loop 512 was cancelled and transferred to Business US 59-L.

Loop 513 was designated on September 4, 1973 as a loop off SH 123 in Seguin along an old routing of SH 123. The route was signed as SH 123 Business rather than Loop 513. On June 21, 1990 Loop 513 was cancelled and transferred to Business SH 123-B.

Loop 516 was designated on May 31, 1973 as a loop off US 181 in Beeville along an old routing of US 181. The route was signed as US 181 Business rather than Loop 516. On June 21, 1990 Loop 516 was cancelled and transferred to Business US 181-J.

Loop 518 was designated on November 25, 1975 as a loop off US 190 in Killeen along an old routing of US 190. The route was signed as US 190 Business instead of Loop 518. On June 21, 1990 Loop 518 was cancelled and transferred to Business US 190-F.

Loop 519 was designated on November 25, 1975 as a loop off US 80 in Van Horn along an old routing of US 80. The route was signed as US 80 Business instead of Loop 519. On June 21, 1990 Loop 519 was cancelled and transferred to Business IH 10-D.

Loop 520 was designated on November 25, 1975 as a loop off SH 171 in Covington along an old routing of SH 171. On June 21, 1990 Loop 520 was cancelled and transferred to Business SH 171-E.

Loop 525 was designated on August 23, 1976 as a loop off US 59 in El Campo along an old routing of US 59. The route was signed as US 59 Business rather than Loop 525. On June 21, 1990 was cancelled and transferred to Business US 59-S.

Loop 528 was designated on August 23, 1976 as a loop off US 287 in Waxahachie along an old routing of US 287. The route was signed as US 287 Business rather than Loop 528. On June 21, 1990 Loop 528 was cancelled and transferred to Business US 287-R.

Loop 530 was designated on November 23, 1976 as a loop off US 190 in Belton along an old routing of US 190. 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 531 was designated on January 20, 1977 as a loop off US 287 in Grapeland along an old routing of US 287. On July 31, 2003 Loop 531 was cancelled by district request and redesignated as Business US 287-V.

Loop 532 was designated on January 20, 1977 as a loop off IH 35 in Encinal along an old routing of US 81. The route was signed as US 81 Business rather than Loop 532. On June 21, 1990 Loop 532 was cancelled and transferred to Business IH 35-B.

Loop 534 is located in Kerr County. It runs from SH 173 south of Kerrville north to IH 10.

Loop 534 was designated on May 2, 1977 from FM 689 (now SH 173) southeast of Kerrville north to IH 10. On October 23, 1978 the road was extended southeast 2.1 miles to SH 16, replacing a section of FM 689 (although this section was signed as SH 173). On October 2, 1990 a 2-mile section from SH 16 to the southern terminus was transferred to SH 173.

Loop 538 was designated on January 24, 1978 from FM 78, 0.5 mile east of SH 218, east and northeast to FM 78 near Live Oak Road (now Schertz Parkway) in Schertz. The route was never built, and was cancelled on June 18, 1996.

Loop 539 was designated on January 24, 1978 from FM 78, 0.3 mile west of FM 1103, east and northeast to FM 78 near Haeckerville Road in Cibolo. On September 26, 1996 the road was rerouted along old FM 78 through Cibolo after FM 78 was rerouted south of town. On November 20, 2014 Loop 539 was cancelled and returned to the city of Cibolo.

Loop 544 was designated on February 23, 1983 as a loop off US 84 in Roscoe. On June 21, 1990 Loop 544 was cancelled and transferred to Business US 84-J.

Loop 545 was designated on April 20, 1984 from US 67 northeast 5.1 miles to Main Street, then north along Main Street 0.5 mile to US 67 along an old routing of US 67. On March 29, 1988 a 1.1 mile section from US 87 to FM 380 was removed and returned to the city of San Angelo. The remainder of Loop 545 was cancelled on November 21, 1996 and transferred to Business US 67-H.

Loop 546 was designated on April 9, 1984 from Loop 250 east and south 3.5 miles to Wall Avenue, then east 1.3 miles along Wall Avenue to SH 349 (now Business SH 349), then south along SH 349 to Florida Avenue, then southeast 2.5 miles along Florida Avenue and Garden City Highway to IH 20/SH 158 along an old routing of SH 158. On June 21, 1990 Loop 546 was cancelled and transferred to Business SH 158-B.

Loop 549 was designated on September 27, 1985 from SH 70, 2 miles west of Sweetwater, south 2 miles to Loop 432 (now Business IH 20). The route was signed, but not designated, as SH 70. Loop 549 was cancelled on June 21, 1990 as the SH 70 designation became official.

Loop 550 was designated on April 18, 1985 as a loop off IH 40 in Adrian along an old routing of US 66. On June 21, 1990 Loop 550 was cancelled and transferred to Business IH 40-B.

Loop 551 was designated on April 18, 1985 as a loop off IH 40 in Vega along an old routing of US 66. On June 21, 1990 Loop 551 was cancelled and transferred to Business IH 40-C.

Loop 552 was designated on April 18, 1985 from IH 40 west of Amarillo east, north, and east 9 miles to US 60/US 87, then east and northeast 10.8 miles along US 60 to its intersection with Loop 552, then southeast 4.6 miles to IH 40 along an old routing of US 66. On October 25, 1990 Loop 552 was cancelled and transferred to Business IH 40-D.

Loop 554 was designated on April 18, 1985 as a loop off IH 40 in Groom along an old routing of US 66. On June 21, 1990 Loop 554 was cancelled and transferred to Business IH 40-F.

Loop 555 was designated on April 18, 1985 as a loop off IH 40 in McLean along an old routing of US 66. On June 21, 1990 Loop 555 was cancelled and transferred to Business IH 40-H.

Loop 556 was designated on April 18, 1985 as a loop off IH 40 in Shamrock along an old routing of US 66. On March 24, 1993 Loop 556 was cancelled and transferred to Business IH 40-J.

Loop 558 was designated on January 15, 1986 from SH 35 southwest and west 4.9 miles to the intersection of SH 35 and SH 288. On February 25, 1987 the route was transferred to SH 35 and Loop 558 was reassigned to an old routing of SH 35 from SH 288 east 3.7 miles to SH 35. Loop 558 was cancelled on September 29, 1992 and transferred to FM 523.

Loop 560 was designated on January 28, 1987 as a loop off IH 45 in Ferris. On June 21, 1990 Loop 560 was cancelled and transferred to Business IH 45-J.

Loop 562 was designated on January 28, 1987 as a loop off IH 45 in Palmer. On June 21, 1990 Loop 562 was cancelled and transferred to Business IH 45-H.

Loop 564 is a state highway loop that encircles Mineola.

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

Loop 566 was designated on May 2, 1988 from US 287/SH 283, south along SH 6, then west to US 277 along an old routing of US 277. On June 21, 1990 Loop 566 was cancelled and transferred to Business US 277-G.

Loop 569 was designated on April 23, 1987 as a loop off US 380 in Decatur along an old routing of US 380. On June 21, 1990 Loop 569 was cancelled and transferred to Business US 380-F.

Loop 590 was designated on April 26, 1989 from US 77 south and southwest 13.9 miles along Helen Moore Road (now Paso Real Highway) to US 77/US 83 (now IH 69E). On December 21, 1994 Loop 590 was cancelled and redesignated as FM 509 to provide a continuous route for FM 509.

Loop 592 is located in Bell County. It runs from US 190/IH 14 east of Nolanville to US 190/IH 14 at Paddy Hamilton Road. The route is unsigned.

Loop 592 was designated on May 24, 1990 on the current route.

Loop 593 was designated on January 29, 1991 from US 69 in Greenville south and east 5.2 miles to SH 34. The city of Greenville rejected construction of Loop 593, and it was cancelled on July 15, 1992.

Loop 635 was designated on April 1, 1968 from IH 635/IH 35E to Spur 459 (now SH 121). On July 31, 1974 Loop 635 was cancelled and transferred to IH 635.

Loop 820 was designated on April 18, 1963 from IH 820 at or near Horne Road northwest to US 377 as a renumbering of a section of Loop 217. On September 1, 1965 a 13.5 mile section from IH 20 to IH 35W was added, but this section became a portion of IH 820 on January 21, 1969. The remainder of Loop 820 was cancelled on July 13, 1977 and transferred to SH 183.

Loop 1604 is a state highway loop that encircles San Antonio. At nearly 95 miles, Loop 1604 is the longest state highway loop in Texas.

Loop 1604 was designated on June 30, 1977 as a replacement of FM 1604. On December 12, 1979 Loop 1604 was rerouted near Losoya; the old route became a spur of FM 1937 (this is now FM 3499). On March 3, 1981 Loop 1604 was rerouted around Elmendorf; the old route became FM 327. In 1983 Loop 1604 was rerouted around Lone Oak; the old route became FM 3465.

Loop 1853 is a proposed loop in Madisonville. The route is designated from US 190, 0.7 miles east of FM 1452 to SH 21, 0.4 miles west of FM 2346. The number was chosen to commemorate the year that Madison County was established.