State Highway 46 (SH 46) is a state highway in the U.S. state of Texas that runs from SH 16 east of Bandera to the intersection of SH 123 and SH 123 Business just south of Seguin. History SH 46 was originally designated on October 20, 1919 as a route from New Braunfels north to Johnson City. On July 13, 1925, the route had been shortened, with the section north of Spring Branch transferred to SH 108. This alignment of SH 46 only consisted of the portion from US 281 to US 81 in New Braunfels. US 81 no longer exists today in favor of I-35 and is known as a business loop of I-35. On July 16, 1928, it extended to Seguin. On July 15, 1935, the section from New Braunfels to Seguin was cancelled. On October 26, 1967, the highway was relocated in New Braunfels to the east along the alignment of Loop 337, but still had an eastern terminus at US 81. The original alignment in New Braunfels was redesignated as Loop 453, but to be signed as a business route of SH 46. On June 21, 1990, the designation of this segment was officially changed to Business 46. On February 26, 1968, SH 46 was extended to the south from US 81 to I-35, replacing part of Farm to Market Road 25. On September 28, 1988, the highway was extended at both ends, extending the eastern end south replacing Farm to Market Road 25 from I-35 to FM 78 and then replacing part of Spur 351 from FM 78 to I-10 in Seguin. The western terminus was extended to the west replacing Ranch to Market Road 475 from US 281 to SH 16. A portion of this route had been FM 1719 which had been combined with RM 475 in 1951. On May 14, 1990, the highway was extended to its current alignment when it was extended south from I-10 to SH 123 replacing the remainder of Spur 351. Spur 351 was designated on June 30, 1961 from FM 25 and FM 78 to US 90A. On August 4, 1970, Spur 351 was extended south to SH 123. On September 28, 1988, the section of Spur 351 from FM 78 to I-10 was transferred to SH 46. On May 14, 1990, the remainder of Spur 351 was cancelled and mileage was transferred to SH 46. Route