The Gokteik viaduct is a railway bridge in Myanmar, located between the towns of Pyin Oo Lwin and Lashio in Shan State. The bridge was completed in 1901 during British colonial rule and was at the time the largest railway trestle in the world, with a height of 102 meters (335 feet) and a length of 689 meters (2,260 feet).

The bridge was constructed to connect the northern and central regions of Myanmar and was part of a railway line that ran from Mandalay to Lashio. The construction of the bridge was considered a great feat of engineering at the time, as the terrain in the region is mountainous and difficult to navigate.

Today, the Gokteik viaduct is still in use and is a popular tourist attraction in Myanmar. Visitors can take a train ride across the bridge and enjoy breathtaking views of the surrounding mountains and valleys. However, the bridge is known for its narrow walkways and lack of safety measures, which can make the experience challenging for some visitors. Despite this, the Gokteik viaduct remains a unique and impressive engineering achievement in the history of Myanmar.