ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,548, issued on Sept. 29.
"Viaduct structure" was invented by Jianyou Wang (Wenzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a viaduct structure. The viaduct structure consists of steel bridge columns, steel plate girders, a bridge deck bottom steel plate, bridge deck side steel plates and cement-gravel concrete, where the steel bridge columns, the steel plate girders and the bridge deck bottom steel plate are welded to one another to form the ceiling type steel architecture, the bridge deck side steel plates are welded to the bridge deck bottom steel plate, and the cement-gravel concrete is poured in a groove-like structure...