Triphet Road, Phra Nakhon, Bangkok, 10200
The bridge was built in 1932 by Rama VII in commemoration of the 150th anniversary of the Chakri Dynasty. It was built as part of the ongoing growth of Bangkok, promoting economic growth and modernisation. The original name of the bridge was Phra Phutta Yodfa Bridge, named after King Buddha Yodfa Chulaloke (Rama I). The bridge was constructed by Dorman Long, an engineering consultancy and equipment manufacturer for the construction of long-span bridges based in Middlesbrough, England. Dorman Long was also responsible for building the Sydney Harbour Bridge. On 5th June 1944, as part of the bombing of Bangkok during World War II, a unit of B-29 bombers was using the bridge for target practice. They missed and, instead, damaged tram lines, a Japanese military hospital, and the Japanese Secret Police HQ some two kilometres away. The Thai authorities did not discover that the bridge was the intended target until 1947.