Thailand Route 304, road in Thailand
Thailand Route 304 is a highway that connects the Bangkok suburb of Pak Kret with Nakhon Ratchasima city in the northeast. The road runs through several provinces, crosses the Sankamphaeng Mountains, and serves as an important link in the Asian Highway network.
The road was built starting in the 1940s, with sections paved in the 1960s with help from the US Army during the Vietnam War. Between 2015 and 2018, the highway was expanded into a four-lane road with wildlife crossings added.
The highway connects different ways of life in Thailand, from Bangkok's urban areas to rural villages and mountain passes. Travelers passing through see local markets, temples, and the daily activities of people who use this road as part of their regular lives.
The highway is busiest during holiday seasons when many people travel to visit family or enjoy outdoor activities. It is helpful to stop at local markets along the route to rest, explore the region, and sample local food.
The highway passes through the Dong Phayayen-Khao Yai Forest Complex and features wildlife overpasses that allow animals to move safely between protected parks. These structures were the first of their kind in Thailand when built starting in 2015 and demonstrate how infrastructure can support conservation.
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