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Addison Airport Tunnel
Addison Airport is the busiest general aviation airport in the State of Texas. To improve east-west traffic flow in the vicinity of the airport...


Cal Park Hill Tunnel
The Cal Park Hill Tunnel in Marin County, California is being rehabilitated in order to convert the collapsed historic railroad tunnel into a dual use recreation trail...


Cliffs Highway Tunnel
The Cliffs Highway Tunnel project near Swannanoa, North Carolina was being developed to facilitate vehicular access into a new planned community.


Dallas Area Rapid Transit
Section NC-1B of the Dallas Area Rapid Transit (DART) Light Rail system consists of parallel 18-ft-diameter tunnels located along the North Central Expressway...


Interstate Highway 635
Interstate Highway 635 (LBJ) is one of the most congested roadways in the Dallas/Fort Worth metroplex and it intersects with the Dallas North Tollway (DNT)...


North Diversion Channel Bike Trails
The City of Albuquerque, in an effort to increase bike usage, has implemented a master plan to improve bike trails...


Port Of Miami Tunnel
The $1.6B Port of Miami Tunnel Project is being developed as a Public-Private Partnership (PPP) using the finance-design-build-operate-maintain...


University Link Light Rail, Contract U230 is a component of the 3.15-mi light rail extension that will connect downtown Seattle with the University of Washington campus.


Union Canal Tunnel
The oldest surviving transportation tunnel in the United States is the Union Canal Tunnel in Pennsylvania.