Tseung Kwan O line the morning peak period, the Tseung Kwan O line uses 15 trains to maintain a frequency of 2.5 minutes betweem Tsemg Kwan O and North Point. The Tseung Kwan O line is the first MTR line with no tracks on viaducts. It was the only line with tracks completely in tunnels until the completion of LOHAS Park station, near which there are two short sections that are not in tunnels. The stations of Yau Tong, Po Lam and LOHAS Park are at ground level, but are completely shielded to minimise noise to the surrounding development. The rest of the line
B&O Railroad Bridge the B&O replaced the original bridge with the current one. The three-span through truss bridge with a center swing span was built by the American Bridge Company. During construction, a tugboat grounded on the nearby riverbank and was freed by a B&O locomotive. The bridge was struck by the tugboat "Radnor", hauling a barge loaded with oleum, on March 12, 1924. The bridge was originally protected by a mechanical interlocking, which was revised in 1914. It was replaced in 1946 with an electrical interlocking, which also controlled the nearby junction with the Reading Company at Eastwick. In 1977, the Chessie