Downgraded bridges, railway tunnels along Hải Vân Pass require upgradi… stockbot 0 4 05.01 10:57 https://vietnamnews.vn/society/1654829/downgraded-bridges-railway-tunn… + 0 https://vietnamnews.vn/rss/society.rss + 0 The line passing through the Hải Vân Pass is 19.8km long with numerous bridges and tunnels built during the French colonial period nearly 100 years ago.