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SH 46 (Texas)

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Parent: Interstate 35 in Texas Hop 6 terminal

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SH 46 (Texas)
StateTX
TypeSH
Route46
Length mi30.7
Established1919
DirectionA=West
Terminus AUS 287 near Music City Mall
JunctionsI-35 in New Braunfels, I-10 near Seguin
Direction BEast
Terminus BSH 123 in Seguin
CountiesBexar County, Comal County, Guadalupe County

SH 46 (Texas) is a state highway in the U.S. state of Texas running across the Texas Hill Country and portions of the Greater San Antonio and Greater Austin regions. The route connects suburban and exurban communities, linking major corridors such as I-10, I-35, and US 281. SH 46 serves as a commuter artery for San Antonio and a freight-supporting connector for Seguin and New Braunfels.

Route description

SH 46 begins near the western edge of the San Antonio–New Braunfels metropolitan area at an interchange with US 281 and proceeds eastward through rapidly developing suburbs linked to Randolph Air Force Base and Texas State University–San Marcos commuter corridors. The highway passes through or adjacent to communities such as Helotes, Bulverde, Spring Branch, and Canyon Lake, intersecting with regional arterials including FM 3009 and FM 2673. East of New Braunfels SH 46 crosses I-35 and follows a route that parallels rail lines operated by Union Pacific Railroad toward Seguin, terminating at SH 123 near central Seguin. Along its alignment SH 46 interfaces with commercial districts anchored by shopping centers like La Cantera and industrial zones tied to employers such as Caterpillar Inc. and Whataburger regional facilities.

History

The designation for SH 46 dates to the early development of the Texas state highway system in the 1910s and 1920s under the auspices of the Texas Highway Department and later the Texas Department of Transportation. Initially the route reflected patterns of settlement tied to rail towns like Seguin and agricultural markets centered in Guadalupe County. Post-World War II suburbanization associated with Brooks Air Force Base and later expansions linked to the interstate era—most notably connections to I-10 and I-35—prompted realignments and capacity upgrades. In the late 20th and early 21st centuries growth from San Antonio and spillover from Austin spurred widening projects frequently coordinated with federal programs involving the Federal Highway Administration and regional planning bodies such as the Alamo Area Metropolitan Planning Organization. Major improvements often paralleled utility expansions by firms like CenterPoint Energy and transit planning by the Capital Metropolitan Transportation Authority where overlapping jurisdictions applied.

Major intersections

- Western terminus: US 281 / Loop 1604 area near San Antonio - Intersection with FM 3009 near Spring Branch - Crossing of I-35 in New Braunfels - Interchange with I-10 eastbound approaches toward Seguin - Eastern terminus: SH 123 in Seguin

Future and planned developments

Planned capacity and safety projects for SH 46 have been included in regional transportation improvement programs administered by the Alamo Area Metropolitan Planning Organization and coordinated with the Texas Department of Transportation. Proposals include lane additions, interchange reconstructions at I-35 and I-10, frontage road development near commercial nodes, and multimodal accommodations to integrate services from providers such as the Capital Metropolitan Transportation Authority and Greyhound Lines. Additional right-of-way acquisitions have involved coordination with local governments in Comal County and Guadalupe County, and environmental reviews reference resources like the Guadalupe River and adjacent watershed protections overseen by the Texas Commission on Environmental Quality.

Spur and business routes

SH 46 has had auxiliary routings and business alignments created to serve downtown districts and former alignments, commonly coordinated with county and city authorities in New Braunfels and Seguin. Business routes often provide access to historic downtowns proximate to landmarks such as the New Braunfels Civic/Convention Center and the Sebastopol House Historic Site. Spur designations have been used to connect industrial parks and logistics hubs associated with carriers like Union Pacific Railroad and distribution centers operated by national retailers including Walmart and Target Corporation.

Category:State highways in Texas