It usually takes about 2 months to complete a project like this, but the Chinese have found a way to do it it in just 43 hours. Over 1300 tons of new surfacing for the bridge have been transported to the construction site to replace the old surface. The Sanyuan Bridge is a major overpass on the northeastern stretch of Beijing.
Incredible: Retrofitting a Bridge in 43 Hours
Video by CCTVAmerica1