Liuwu Overpass is the first overpass bridge in Tibet. [Photo/China Tibet Online]

The Liuwu Overpass is 1660 meters long, including the main span of 240 meters double steel box x-arch bridge, and deputy span of 506 meters. [Photo/China Tibet Online]

The Liuwu Overpass is made up of the bridge approach in the south and the interchange in the north. The Liuwu Overpass is 29 meters wide with two-way six lanes. [Photo/China Tibet Online]

The foundation of the bridge was laid on Nov. 25, 2004. The project started off on March 6, 2005 and the overpass was opened to traffic on April 30, 2007. [Photo/China Tibet Online]

Photo shows the monument marking the opening of the Liuwu Overpass. [Photo/China Tibet Online]

Konchok Lhamo and Kunsang, sanitation workers from the Maizhokunggar County of Lhasa and Lhoka Prefecture of Tibet respectively, are cleaning the Liu Overpass. [Photo/China Tibet Online]

The sign of Outstanding Chinese Tourism City for Lhasa is erected by the Liuwu Overpass. [Photo/China Tibet Online]