Orcas岛渡轮码头桥面钢梁现裂缝：超22英尺车辆禁行，修复预计需两周
位于华盛顿州圣胡安县的 Orcas 岛渡轮码头活动桥面（transfer span）被查出钢梁裂缝，华盛顿州渡轮（WSF）自11月9日起对进出该码头的车辆实施限制。华盛顿州交通厅说，桥梁工程师在例行检查中用专用车辆检查桥面底部，在一条车轮碾压带下方的两根钢梁上发现了裂缝。
受损钢梁称作纵梁（stringers），是活动桥面的支撑结构。活动桥面可升降与渡轮对接，供车辆上下船。裂缝若继续扩展会危及结构安全，限制措施将持续到修复完成为止。
限制期间，只有长度22英尺（约6.7米）以内的标准车辆可以在 Orcas 岛码头上下船；车辆过桥时时速不得超过5英里，并须靠东侧行驶。超过22英尺的车辆不会在 Anacortes、Shaw、Lopez 与 Friday Harbor 各码头被安排上开往 Orcas 岛的渡轮；已预订这类车辆的乘客不会被收取缺席费（no-show fee）。
华盛顿州交通厅11月10日更新说，修复设计已经完成，施工将改用螺栓连接加钢板加固、不用焊接，以加快进度；承包商11月10日起进场搭脚手架，修复预计最长需要两周。州交通厅同时在研究临时办法，争取在最终修复完成前先让大型车辆通行。
（来源：华盛顿州交通厅）
Cracks in Orcas Island Ferry Terminal Steel Beams: Vehicles Over 22 Feet Barred, Repairs Expected to Take Two Weeks
The transfer span at the Orcas Island ferry terminal in San Juan County, Washington, has been found to have cracks in its steel beams, and Washington State Ferries (WSF) has restricted vehicles at the terminal since November 9. The Washington State Department of Transportation said bridge engineers, using a special truck to inspect the underside of the span during a routine inspection, found cracks in two steel beams beneath one of the vehicle wheel paths.
The beams, called stringers, support the transfer span, the movable part of the terminal bridge that raises and lowers to meet the ferry so vehicles can drive on and off. The restrictions are needed to keep the structure safe and prevent further damage, and will stay in place until repairs are complete.
While the restrictions last, only standard vehicles 22 feet long or shorter can load and unload at the Orcas Island terminal. Drivers crossing the span must slow to no more than 5 mph and stay to the east side. Vehicles longer than 22 feet will not be loaded at the Anacortes, Shaw, Lopez or Friday Harbor terminals for trips to Orcas Island, and customers who already hold reservations for such vehicles will not be charged a no-show fee.
In a November 10 update, the department said the repair design is complete and crews will use bolted connections and steel plates instead of welding to speed the work. A contractor began installing scaffolding on November 10, and repairs are expected to take up to two weeks. The agency is also exploring options to let larger vehicles cross before the final repairs are finished.
(Source: Washington State Department of Transportation)
来源：华盛顿州交通厅
发布：GSM·美国（发布链接）
图片来源：图片来源：Wikimedia Commons「Orcas Island Ferry Landing」（CC BY-SA 3.0），图中为 Orcas 岛渡轮码头 Image: Wikimedia Commons, "Orcas Island Ferry Landing" (CC BY-SA 3.0), showing the Orcas Island ferry landing
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