State Route 126 (SR-126) is an 11-mile-long (18 km) route in Montgomery County. The route serves as both the northern and southern frontage roads between exits 11 and 16 along Interstate 85 (I-85) and U.S. Route 80 (US-80). Prior to US-80's realignment onto I-85 in November 2010, SR-126 was only the northern frontage road. SR-126 begins at itself, a consequence of the realignment as it forms a complete loop. A 308-foot-long (94 m) spur from the route's beginning marks the end of the route.
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