Loop 360 Bridge

Loop 360 is a scenic highway winding through the hills of West Austin, Texas. The road is described by the Texas Department of Transportation as "a 4-lane depressed median arterial with at-grade signalized intersections". In 2001, the average daily traffic was 55,000 vehicles at the most traveled point. Despite its "Loop" designation, the road is not what many would consider a loop. According to TxDOT, a state loop is a by-pass between two system roadways, in this case Highway 290, US 183 and various other TxDOT system roads.

More info at  http://en.wikipedia.org/