CHIANG RAI – Heavy rains continue to pound the northern Chiang Rai province, triggering sudden and dangerous flash floods. The rapidly rising floodwaters are causing significant damage to local infrastructure across the entire northern region.
Local officials are now rushing to repair essential mountain routes before more destructive storms arrive.
The Ngao River has rapidly increased in volume due to the relentless and heavy downpours. This powerful surge recently caused a temporary bypass road heading to Phu Chi Fa to collapse. Emergency crews are currently working around the clock to restore safe travel for everyone involved.
Key Takeaways:
- Continuous heavy rainfall in Chiang Rai has caused the Ngao River to overflow and damage local roads.
- Flash floods severely eroded Highway 1290, forcing officials to open only a single lane for cautious driving.
- Authorities warn residents to prepare for more flash floods as 12-hour rainfall totals exceed 102 millimeters.
The powerful and sudden flash floods completely washed away large sections of the vital Highway 1290. This important route connects the busy Chiang Saen and Chiang Khong districts in the province. Raging waters severely eroded the mountain road near kilometer marker 82, halting local traffic completely.
In a swift response, Highway District 2 in Chiang Rai teamed up with local military rangers. They quickly brought in heavy excavators to dig out the collapsed soil and pack down fresh rocks. Thanks to their quick and efficient work, the road is now partially open to the public.
According to recent reports from local news outlets, only one traffic lane is currently available. Authorities are urging all daily travelers to exercise extreme caution when passing through this damaged section. Further structural road repairs will continue once the harsh weather conditions finally begin to improve.

Rainfall Reaches Critical Levels in Mae Sai
The heavy rain shows no signs of stopping anytime soon across Chiang Rai province. The local water management division recently shared a very concerning weather update regarding the ongoing storms. They reported massive amounts of continuous rainfall occurring specifically in the vulnerable Mae Sai district.
In just twelve short hours, the affected area recorded a staggering 102 millimeters of rain. Meteorological radar shows thick, dark rain clouds still covering the entire northern region of Thailand. These heavy clouds are actively producing continuous rain showers over the vulnerable local mountain towns.
Because of this ongoing weather, the risk of more sudden flash floods remains incredibly high. Officials are actively asking residents living in low-lying areas to monitor the weather very closely. People should prepare to quickly move their valuable belongings to higher ground if necessary.

Urgent Bridge Repairs Keep Traffic Moving
Meanwhile, the dangerous situation near Phu Chi Fa requires constant monitoring by the local authorities. A temporary metal bridge on Highway 1155 recently experienced a minor but scary structural collapse. This damage happened because the swollen Ngao River rushed forcefully underneath the fragile metal structure.
Thankfully, a highly specialized bridge center team quickly arrived at the emergency scene to help. They managed to successfully repair the temporary bridge so that cars can cross safely again. The team is also carefully adjusting the road approach to a brand-new bridge currently under construction.
Local rescue teams are working hard to ensure everyone can travel safely despite the storms. The local community hopes the heavy rain will stop soon so permanent road repairs can begin. Until that happens, drivers must stay alert and closely follow all posted emergency road signs.
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