Jacksonville Turbine InterchangeADDPMP642
A turbine interchange that connects the SR 9A and SR 202 in Jacksonville, Florida, USA. Also known as a whirlpool interchange, this structure consists of left-turning ramps sweeping around a center interchange, thereby creating a spiral pattern of right-hand traffic. Due to the vast amount of land required to construct the sweeping roads, this type of junction is rarely built. The design includes super elevated circular ramps, consisting of six steel twin box girder bridges ranging in length from 325 to 1,778 feet (99.6 to 541.9 metres), with a maximum span length of 282.5 feet (86.1 metre). Construction began in 2007 and opened to the public in 2008, at a cost of $80 million dollars.