Along with its massive high-speed rail network, China has officially surpassed the United States in yet another piece of transportation infrastructure: the world’s longest sea bridge.

The new bridge spans Jiaozhou Bay, on the southern coast of China’s Shandong Peninsula in northeastern China. At 26.4 miles long, it beats Louisiana’s Lake Pontchartrain Causeway — the previous world-record holder — by at least 2 miles, according to the Guinness Book of World Records.

Chinese workers toiled at marathon pace to build the bridge in four years, starting at each side and meeting in the middle. The structure has 5,200 pillars and cost at least $2.3 billion, according to Chinese state-run media.