The Port of Miami mega project is celebrating a significant milestone today. A massive 41-foot diameter tunnel boring machine will start excavating the first of the twin tunnels that will connect the Port of Miami with Watson Island. The TBM will reach the port in about 6 months and turn around to complete the other tunnel. The target project completion date is May 2014. [Source: NBC Miami via ASCE SmartBrief. Image: Port of Miami Tunnel]
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The Port Authority of Allegheny County (Pittsburgh, Pennsylvania) has a major transit improvement project dubbed the North Shore Connector. Its main components are twin bored tunnels 1.2 miles long that will connect the Port Authority’s Light Rail Transit system, the T, 1.2 miles from the Gateway Subway Station underneath Stanwix Street and the Allegheny River to the North Shore. It will travel under the river and provide three new stations and allow for future improvements beneficial to future development and continued downtown revitalization. The $435 million project is making news recently for cost increases, drawing comparisons to Boston’s Big Dig much to the dismay of the Port Authority. Read on for project maps, links and more info.