Texas State Highway Loop 150
Loop 150 is a loop route in the city of Bastrop in the U.S. state of Texas. Loop 150 follows the route of old alignment of SH 71 through Bastrop. The route of SH 71 changed when the state built a bypass around Bastrop. Loop 150 leaves SH 71 on the west side of town and rejoins SH 71 on the east side, crossing the Colorado River. The historic Colorado River Bridge at Bastrop is part of Loop 150. History. The routing of the roadway had been proposed as early as 1919 as SH 3A.  In 1924, the historic Colorado River Bridge at Bastrop was completed to provide access to both sides of the Colorado River. By 1926, the designation had been changed to SH 71. In 2013, the Texas Legislature, designated the new bridge on Loop 150 across the Colorado River as the Chief Petty Officer (SOC) Stephen "Matt" Mills Bridge. Mills was a highly decorated United States Navy SEAL, who died while conducting special operations in Afghanistan on August 6, 2011. Route description. Loop 150 begins on the west side of Bastrop at a diamond interchange with SH 21 and SH 71. The  loop heads northeast from the interchange to a crossing of the Colorado River. After the river crossing, the road heads east along Chestnut Street through Bastrop. Loop 150 continues to the east through the city to an intersection with SH 21 and 95. SH 21 enters the intersection from the south concurrent with SH 95 and begins to run concurrently with Loop 150 as the two head to the east. As the loop begins to curve back towards the southeast, SH 21 leaves the concurrency to the northeast. Access to nearby Bastrop State Park is provided by an intersection with  Park Road 1 just east of the SH 21 intersection. Loop 150 continues to the southeast to its endpoint at a concurrent SH 71 and SH 95.