Economy World's longest sea-crossing bridge opens between Hong Kong and China Updated : October 22, 2018 02:38 PM IST The 55 km bridge was originally due to open in 2016, but repeated delays pushed that to this year. Private car owners in Hong Kong will not be able to cross the bridge without a special permit. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.