Department of Highways closes 4 routes in Kanchanaburi and Prachuap Khiri Khan due to floods and landslides on October 29, 2026.
Department of Highways reports 4 critical locations in Kanchanaburi and Prachuap Khiri Khan remain impassable due to floods and landslides, advising motorists to seek alternative routes.
- Four highway routes are completely closed in Kanchanaburi and Prachuap Khiri Khan provinces due to severe flooding and landslides.
- The affected route in Kanchanaburi is Highway 3480, which has suffered severe surface damage.
- In Prachuap Khiri Khan, three locations are closed: two sections of Highway 4 (Phetkasem Road) and one section of Highway 4372.
- The Department of Highways is working on repairs and has advised motorists to avoid the impassable areas and check for updates before traveling.
The Department of Highways has provided an update on disaster impacts affecting nationwide highway networks, with its Disaster Management Center reporting that 14 routes across 6 provinces have faced disruptions.
Thanks to rapid deployment and emergency response efforts by department personnel, 10 routes have successfully been reopened for public travel. However, heavy damage persists at 4 locations across two provinces—Kanchanaburi and Prachuap Khiri Khan—where traffic remains completely blocked.
Details of the 4 Severely Disrupted Locations
Motorists needing to travel through Western and Upper Southern regions are advised to avoid or exercise heightened caution in the following severed road sections:
Kanchanaburi Province (1 location): Highway 3480 between kilometer markers 30+109 and 30+121 in Thong Pha Phum district has suffered severe surface damage, rendering it impassable for all vehicle types.
Prachuap Khiri Khan Province (3 locations): Comprising Highway 4 (Phetkasem Road) at U-turn sections between km 348+097 and 348+104, and between km 358+906 and 358+936 in Thap Sakae district, which have experienced severe flooding and landslide damage. Additionally, Highway 4372 from km 0+000 to km 0+495 in Bang Saphan district—at the Wang Yao to old Phetkasem road entrance—has been heavily impacted and remains closed.
Relief Efforts and Guidance for Road Users
The Department of Highways has instructed local highway districts and maintenance units to deploy heavy machinery, warning signs, detour direction boards, and 24-hour flashing safety lights. Crews are working expeditiously to install Bailey bridges or conduct temporary road surface repairs to restore transit safety as soon water levels recede and conditions stabilize.
Motorists are requested to verify route and weather conditions prior to departure, drive with increased caution, strictly follow official instructions and warning signals, and avoid attempting to drive through flooded roadways. Real-time disaster tracking and alternative route updates are available via the Department of Highways Disaster Monitoring System (HDMS) or the 24-hour hotline at 1586.
