美国铁路公司完成了巴尔的摩铁路隧道项目前期施工

美国铁路公司上周宣布，在巴尔的摩建造新的弗雷德里克-道格拉斯隧道之前，该公司已经完成了前期的施工工作。

这个期待已久的项目于3月10日在Halethorpe和西巴尔的摩开始。

Amtrak高级公共关系经理Beth Toll在一封电子邮件中说，前期的施工范围是从Winans到Bridge联锁处的A段落，包括用13,500根混凝土轨枕替换老化的木轨；安装28,000英尺的轨道；以及完成5英里路段的轨道排水改造。

"这段前期项目将直接减少对隧道施工阶段的影响，并使新的弗雷德里克-道格拉斯隧道的效益最大化，提高行车速度和运输能力，"Amtrak资本交付执行副总裁Laura Mason在项目开始时的新闻稿中说。

新的弗雷德里克-道格拉斯隧道将是B&P隧道更换计划的核心。将建造两条新的隧道，主要为马里兰地区铁路通勤车和美国铁路公司的列车服务。新建隧道将取代1.4英里长的B&P隧道，该隧道可追溯到内战时期。它是东北走廊这一段中最古老的隧道，是美国铁路和MARC列车的瓶颈。

Amtrak has completed early construction work in advance of building the new Frederick Douglass Tunnel in Baltimore, the railroad announced last week.

The long-awaited project began March 10 in Halethorpe and West Baltimore.

Early construction work took place on Track A from Winans to Bridge interlockings and included replacing aging wood ties with 13,500 concrete ties; installing 28,000 feet of rail; and completing track drainage improvements along a 5-mile section, said Amtrak Senior Public Relations Manager Beth Toll in an email.

"This initial project will directly reduce impacts during later construction phases and maximize the benefits of the new Frederick Douglass Tunnel with higher track speeds and greater system capacity," said Amtrak Executive Vice President of Capital Delivery Laura Mason in a press release when the project began.

The new Frederick Douglass Tunnel will be the centerpiece of the B&P Tunnel replacement program. Two new tunnel tubes will be built to primarily serve Maryland Area Rail Commuter and Amtrak trains. The tubes will replace the 1.4-mile B&P Tunnel, which dates from the Civil War era.

It is the oldest tunnel along this section of the Northeast Corridor and is a bottleneck for Amtrak and MARC trains.