On 18 April 1968, the bridge was sold to the American entrepreneur Robert P. McCulloch of McCulloch Oil for US$2,460,000.
As the bridge was disassembled, each piece was numbered to aid reassembly and those markings can still be seen today. The bridge was reconstructed at Lake Havasu City, Arizona and re-dedicated on October 10, 1971. The reconstruction of Rennie’s London Bridge spans a man-made canal that leads from Lake Havasu to Thomson Bay, and forms the centerpiece of a theme park in English style, complete with mock-Tudor shopping mall. Rennie’s London Bridge has become Arizona’s second-biggest tourist attraction, after the Grand Canyon.
The version of London Bridge that was rebuilt at Lake Havasu consists of a concrete frame with stones from the Old London Bridge used as cladding. Not all of the bridge was transported to America, as some was kept behind in lieu of tax duties. The remaining stone was left at Merrivale Quarry on Dartmoor in Devon, so a large part of Rennie’s bridge never left the UK. When Merrivale Quarry was abandoned and flooded in 2003, some of the remaining stones were sold in an online auction.