The Roebling Bridge, completed and opened to traffic in 1867, is the oldest existing sling bridge in the United States, spans the Ohio River between Cincinnati, Ohio, and Covington, Kentucky.

Xinjiang Daqi expressway, with a total length of 112 km, is a two-way four lane highway, starting from the Xingfu intersection overpass of Dahuang mountain, passing through Santai Town, jimusar County, Qitai County, central Tuan Chang, and finally at the turnout crossing of 303 province. The project investment is 3.463 billion yuan.

The Mark Twain Memorial Bridge is a bridge over the Mississippi River at Hannibal, Missouri, childhood home of Mark Twain, for whom the bridge is named. The bridge, north of the original bridge, was finished in 2000. The bridge carries traffic for Interstate 72 and U.S. Highway 36. The state of Missouri has put up a stone picture of Twain on the Missouri side of the bridge.

In northern China, the main factors affecting the durability of concrete are frost damage and corrosion of deicing salt. In 2008, our company used chemtec concrete sealer for protection treatment in northern Expressway Toll Station Lane protection. Chemtec concrete sealer is a concrete protection material widely used in high latitude and cold regions of the United States, which has protected more than 3000 times There are dozens of bridges over 100 years old.