Blockage of fork progression was correlated to the depression in thymidine incorporation. The extent of this depression was not correlated to the amount of cell killing by UVC light in these cell lines or in IAL-PID2 cells. 5, 2020: The Gerald Desmond Replacement Bridge will officially open to traffic.Effect of UVC light on growth, incorporation of thymidine, and DNA chain elongation in cells derived from the Indian meal moth and the cabbage looper.Īfter exposure to 10 or 20 J/m2 UVC light, cells of the UMN-PIE-1181 line, an embryonic cell line derived from the Indian meal moth, Plodia interpunctella, exhibited a rapid and prolonged depression in the rate of incorporation of thymidine, whereas cells of the TN-368 line, an ovarian cell line derived from Trichoplusia ni, the cabbage looper, showed only a slight drop in incorporation and a rapid recovery after exposure to 10 or 40 J/m2 UVC light. Long Beach port and city officials will hold a virtual ceremony to commemorate the new bridge’s opening. 2, 2020: The current Gerald Desmond Bridge will close down, allowing workers to complete a lane changeover to its successor. The span required 117 floor beams, each of which is 140 feet long and 10 feet tall - and weighing 32 tons. Concrete slabs go over that steel, called the superstructure, and crews build the span outward from there.Īpril 2020: The final piece of the main span is put in place. (Photo courtesy of the Port of Long Beach)Īpril 2018: Work begins on the 2,000 foot main span - the part that makes a bridge, well, a bridge - by connecting supporting steel to the towers. The new Gerald Desmond Bridge nears completion September 2020. The towers are the tallest structures in Long Beach. October 2014: Construction on the replacement bridge begins in earnest, with more than 350 massive concrete pilings providing the foundations.ĭecember 2017: Port officials commemorate the completion of the two 515-foot-high towers that will connect the bridge span. January 2013: Groundbreaking ceremony for the Gerald Desmond Replacement Bridge. November 2010: The Port of Long Beach gets the OK from the California Transportation Commission for a replacement project to be part of the state’s Design-Build Demonstration Program. May 2009: The Long Beach harbor commission sets aside $26.4 million to create plans to replace the bridge. July 2008: The Port of Long Beach estimates replacing the Gerald Desmond Bridge would cost about $950 million. (File photo by Sam Gangwer, Orange County Register/SCNG) The Gerald Desmond Bridge opened in 1968. It would remain in place for nearly a quarter century. Navy better access to its station on the island. (Photo courtesy of the Port of Long Beach)ġ944: A temporary pontoon bridge connects Long Beach to Terminal Island, providing the U.S. It was only supposed to stay up for six months, but remains for nearly a quarter of a century. A temporary pontoon bridge connected Long Beach to Terminal Island in 1944. Mid-1930s: The Union Pacific Railroad stops using the jackknife bridge, leading to its removal. (Photo courtesy of the Port of Long Beach)ġ908: A railroad track, built on a wooden trestle and providing early access to Terminal Island from Long Beach, gets replaced by a 187-foot drawbridge that had the moniker “jackknife.” The 187-foot drawbridge known as the “jackknife connected Long Beach to Terminal Island beginning in 1908. Here is a look at the bridges that have connected Long Beach to Terminal Island. Since the Port of Long Beach’s earliest days - construction on the San Pedro breakwater began in 1899 - access from the city to Terminal Island has been crucial.Īnd whether trains, cargo trucks or military transports, bridges have provided that access for more than a century.
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