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For a bridge such defenses are called dolphins. "A notable example of dolphins used to protect a bridge is the Sunshine Skyway Bridge across the mouth of Tampa
by PeterCorless 3y ago
For a bridge such defenses are called dolphins.
"A notable example of dolphins used to protect a bridge is the Sunshine Skyway Bridge across the mouth of Tampa Bay. In 1980, the MV Summit Venture hit a pier on one of the bridge's two, two-lane spans causing a 1,200-foot (370 m) section of the bridge to fall into the water, resulting in 35 deaths. When a replacement span was designed, a top priority was to prevent ships from colliding with the new bridge..."
Source: https://en.wikipedia.org/wiki/Dolphin_(structure) https://en.wikipedia.org/wiki/Dolphin_(structure)
The MV Summit Venture was a 33,900 deadweight tonnage ship. MV Dali was a gross tonnage of 95,128. Nearly 3× as large. It's questionable whether dolphins would have totally prevented such a tragedy.
Yet similarly, expect dolphins to be brought up as a key component of resiliency for any designed replacement bridge.
- bobthepanda 3y agoThat's also a thing. But note how the main bridge piers are on giant islands much larger than the pier itself: https://en.wikipedia.org/wiki/Dolphin_(structure)#/media/File:Skyway_Bridge_old_and_new.jpg https://en.wikipedia.org/wiki/Dolphin_(structure)#/media/Fil... If you really want to make it unblockable you build a bridge+tunnel. https://en.wikipedia.org/wiki/Bridge%E2%80%93tunnel https://en.wikipedia.org/wiki/Bridge%E2%80%93tunnel
- js2 3y agoThe CBBT is downstream of the bridge which collapsed. I've driven it many times. https://en.wikipedia.org/wiki/Chesapeake_Bay_Bridge–Tunnel https://en.wikipedia.org/wiki/Chesapeake_Bay_Bridge–Tunnel
- KWxIUElW8Xt0tD9 3y agoIt has tunnels because the Navy did not want the bay blocked if the bridge dropped into the water. Which is exactly what has happened in Baltimore.