Texas State Highway 151 - Route Description

Route Description

SH 151 begins at Loop 1604, the outer loop around San Antonio, on the west side of San Antonio and from there follows a southeastern path through the western part of the city. The highway provides access to the SeaWorld San Antonio theme park as well as industry along its corridor to include Chase, Hyatt Hill Country Resort, World Savings, Philips semiconductor, the National Security Agency campus, QVC, American Funds, Maxim Integrated Products, and the Northwest Vista College, as well as the nearby Southwest Research Institute. Microsoft has also selected the corridor for a $550 million data center. The highway continues to the southeast to a junction with Interstate 410 (I-410), the inner loop around San Antonio. There is not a direct connect interchange at the junction of I-410. It is necessary to travel on both highways' frontage roads in order to change highways. The highway continues to the southeast through mainly undeveloped land until it merges with US 90. According to the San Antonio Master Thoroughfare Plan, there are plans to extend SH 151 westward from Loop 1604 to SH 211. The plan also shows the construction of an interchange at Loop 1604.

Traffic volumes are low to moderate for the entire length of the freeway ranging from 14,500 average annual daily traffic (AADT) just east of Loop 1604 to 46,000 AADT between Farm to Market Road 1957 (FM 1957) and I-410. Between 2003 and 2005, traffic volumes have remained steady between I-410 and US 90. In that same time period, traffic between I-410 and Loop 1604 has increased by 1,100-7,000 AADT.