Koh Samui has long been a dream destination for travellers worldwide. Its star power has risen even higher since appearing in the third season of The White Lotus, drawing more visitors to the island than ever before. For motor vehicle owners, however, getting there isn’t exactly a breeze. Until now, the only way to bring a vehicle has been by ferry, which means hours of travel and, for some, seasickness along the way. The good news is that the Expressway Authority of Thailand (EXAT) has confirmed plans for Thailand’s first-ever cross-sea suspension bridge to Koh Samui, with a massive B55 billion investment.
According to Governor Surachet Laophulsuk, the 37.4km expressway will have its third public hearing in late 2025, with the Environmental Impact Assessment (EIA) expected to finish by early 2026. If all goes smoothly, Cabinet approval should follow by the end of 2026, paving the way for construction in 2032 and an official opening in 2037.
Built to international safety standards, the new crossing will be strong enough to withstand major storms and earthquakes, featuring a 300-metre span and 50-metre clearance so even naval and relief ships can pass underneath.
And it won’t just carry cars. Under a public–private partnership (PPP) model, utilities agencies are expected to co-invest, running water pipelines, electricity and telecom lines over the sea to keep Koh Samui better connected.
The expressway is set to handle up to 8,000 vehicles a day, slashing the trip to just 10–15 minutes. Say goodbye to hours on wobbly ferries and the seasickness that comes with them.
Beyond convenience, the bridge could pump over B400 billion into the local economy over 30 years, keeping Samui just behind Phuket as the kingdom’s top tourist hotspot. Governor Surachet also points out that it’ll improve healthcare access, emergency response and long-term investment in the region.
By 2037, hopping over to the island for a weekend getaway will be easier than ever. And while the new bridge gets you to Samui, some things will stay the same. If the legendary Full Moon Party is on your bucket list, you’ll still need to catch a boat to the neighbouring island of Koh Phangan.