Texas State Highway Loop marker
Highway names
Interstates	Interstate Highway X (IH-X, I-X)
US Highways	U.S. Highway X (US X)
State	State Highway X (SH X)
Loops:	Loop X
Spurs:	Spur X
Farm or Ranch to Market Roads:	Farm to Market Road X (FM X) Ranch-to-Market Road X (RM X)
Park Roads:	Park Road X (PR X)
System links
Highways in Texas Interstate US State Toll Loops Spurs FM/RM Park Rec

State highway loops in Texas are owned and maintained by the Texas Department of Transportation (TxDOT).

Loop 500

State Highway Loop 500
Location	Shelby County
Length	1.021 mi[1] (1.643 km)
Existed	April 29, 1971–present

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 (4.7 km) to US 96 northwest of Center.

Loop 505

State Highway Loop 505
Location	Newton County
Length	3.654 mi[2] (5.881 km)
Existed	August 31, 1972–present

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

State Highway Loop 506
Location	Wise County
Existed	May 31, 1972[3]–June 21, 1990

Loop 506 was located in Wise County. It is now Bus. US 81.

Loop 507

State Highway Loop 507
Location	Brazos County
Existed	August 31, 1972[4]–June 21, 1990

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 Bus. SH 6.

Loop 508

State Highway Loop 508
Location	Grimes County
Existed	August 31, 1972[5]–June 21, 1990

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 Bus. SH 6.

Loop 509

State Highway Loop 509
Location	Collin County
Existed	July 31, 1972[6]–June 21, 1990

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 Bus. SH 78.

Loop 512

State Highway Loop 512
Location	Montgomery County
Existed	November 3, 1972[7]–June 21, 1990

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 Bus. US 59.

Loop 513

State Highway Loop 513
Location	Guadalupe County
Existed	September 4, 1973[8]–June 21, 1990

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 Bus. SH 123.

Loop 516

State Highway Loop 516
Location	Bee County
Existed	May 31, 1973[9]–June 21, 1990

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 Bus. US 181.

Loop 517

State Highway Loop 517
Location	Dimmit County
Length	2.694 mi[10] (4.336 km)
Existed	June 20, 1975–present

Loop 517 is located in Dimmit County. It runs from US 83 northeast of Carrizo Springs to US 277 northwest of Carrizo Springs.

Loop 517 was designated on June 20, 1975, on the current route.

Loop 518

State Highway Loop 518
Location	Bell County
Existed	November 25, 1975–June 21, 1990[11]

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 Bus. US 190.

Loop 519

State Highway Loop 519
Location	Culberson County
Existed	November 25, 1975–June 21, 1990[12]

Loop 519 was located in Culberson County. It was the former alignment of US 80 through Van Horn. It is now Business I-10.

Loop 520

State Highway Loop 520
Location	Hill County
Existed	November 25, 1975–June 21, 1990[13]

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 Bus. SH 171.

Loop 521

State Highway Loop 521
Location	Jackson County
Length	3.442 mi[14] (5.539 km)
Existed	June 30, 1976–present

Loop 521 is located in Jackson County. It runs from US 59 east of Edna to US 59 west of Edna.

Loop 521 was designated on June 30, 1976, on the current route along an old routing of US 59.

Loop 522

State Highway Loop 522
Location	Jackson County
Length	2.571 mi[15] (4.138 km)
Existed	June 30, 1976–present

Loop 522 is located in Jackson County. It runs from US 59 east of Ganado to US 59 west of Ganado.

Loop 522 was designated on June 30, 1976, on the current route along an old routing of US 59; the route was signed as US 59 Business rather than Loop 522.

Loop 523

State Highway Loop 523
Location	Wharton County
Length	3.006 mi[16] (4.838 km)
Existed	June 21, 1979–present

Loop 523 is located in Wharton County. It runs from US 59, 1.3 miles (2.1 km) west of Louise to US 59, 1.8 miles (2.9 km) east of Louise.

Loop 523 was designated on June 21, 1979, on the current route.

Loop 524

State Highway Loop 524
Location	Wharton County
Length	1.372 mi[17] (2.208 km)
Existed	June 30, 1976–present

Loop 524 is located in Wharton County. It runs from US 59 east of Hillje to US 59 west of Hillje.

Loop 524 was designated on June 30, 1976, on the current route along an old routing of US 59; the route was signed as US 59 Business rather than Loop 524.

Zdroj:https://en.wikipedia.org?pojem=List_of_state_highway_loops_in_Texas_(500–9999)
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