Fourth Thai–Lao Friendship Bridge

The Fourth Thai-Lao Friendship Bridge is a prestressed concrete road bridge that spans across the Mekong River to connect Chiang Khong in Thailand with Houayxay in Laos. The girder structure provides a clear passage for vehicles traveling between both countries over the wide waterway.

The bridge was constructed in the early 2010s as part of a broader effort to improve transport links across Southeast Asia. It represented a significant investment in regional infrastructure connecting two neighboring countries.

The bridge's name reflects deep ties between Thailand and Laos, and locals speak of it as a symbol of their shared connection. Daily, trucks and cars move across carrying goods and people, showing how this crossing has become woven into the rhythm of both communities.

The river is wide and the bridge offers a safe crossing with clearly marked lanes for through traffic. Visitors should expect delays at border checkpoints, especially during busy times of day.

The bridge requires a shift in driving direction at the border, as Thailand drives on the left side and Laos drives on the right, creating an unexpected moment for travelers. This transition happens at designated zones where drivers adjust their lane position.

Location: Ban Houayxay

Inception: December 11, 2013

Official opening: December 11, 2013

Length: 480 m

Part of: AH3, Laos–Thailand border

GPS coordinates: 20.28333,100.41667

Latest update: December 7, 2025 20:46