The Second Thai–Lao Friendship Bridge[a] over the Mekong connects Mukdahan Province in Thailand with Savannakhet in Laos.

[1] Traffic on the bridge drives on the right, as in Laos, while traffic in Thailand drives on the left; the lane-change is on the Thai side.

Bridge construction began on 21 March 2004.

Supports and spans were constructed on shore, then moved out onto pylons in the river by crane.

[citation needed] The total cost was about 2.5 billion baht (US$70 million), funded largely by a Japanese loan.