Rama IV Road

Rama IV Road (Thai: ถนนพระรามที่ 4, RTGS: Thanon Phra Ram Thi Si; usually shortened to ถนนพระราม 4, RTGS: Thanon Phra Ram Si) is a main road in Bangkok, Thailand.

The road was built at the request of foreign merchants and businessmen, who complained of the difficulty and waste of time of travelling to trade in the capital.

To solve this issue, they proposed to set up their stores for trading goods around Khlong Phra Khanong up to the Bang Na area and requested that the government dig up a shortcut canal from Bang Na to Khlong Phadung Krung Kasem, which was one of the outer city moats during that time.

King Mongkut ordered that a new canal be dug up in front of Phlan Phairi Rap Fort (around the Hua Lamphong area), cutting through fields to connect to Khlong Phra Khanong.

It was later declared in 1919, during the reign of King Vajiravudh (Rama VI), to rename Outer Hua Lamphong Road, covering the stretch between the intersections with Charoen Krung and Luang Sunthorn Kosa, to Rama IV Road in memory of King Mongkut who had initially ordered its construction.