[1][2] The bridge opened on 6 April 1932,[3] by King Prajadhipok (Rama VII) in commemoration of the 150th anniversary of the Chakri dynasty and the foundation of Bangkok, shortly before the Siamese coup d'état of 24 June 1932.

[4] Construction of the bridge was started on 3 December 1929[3] by Dorman Long, Middlesbrough, England, under the supervision of Italian technicians from SNOS (Società Nazionale Officine Savignano).

[6] On 5 June 1944, as part of the bombing of Bangkok in World War II, a force of B-29 Superfortresses, in a test of their capabilities before being deployed against the Japanese home islands, targeted the bridge.

Their bombs fell over two kilometers away, damaging no civilian structures, but downed some tram lines and destroyed a Japanese military hospital and the Japanese secret police headquarters.

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