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The most expensive part of the project was the 0.6-mile (0.97 km) segment between exits 2B and 2A in Tremont, Bronx, which was planned to cost $11.788 million; it included a 300-foot-long (91 m) tunnel under the Grand Concourse and the underground Concourse Line, as well as an open cut that passed under five avenues. [68]
The project includes the construction of a new bridge over the West Branch Susquehanna River and 11.7 miles (18.8 km) of new roadway, including a short freeway connection to PA 61. [2] The first phase of the project, connecting US 15 in Winfield with PA 147 near Montandon, opened in August 2022. [3]
An overpass, called an overbridge or flyover (for a road only) in the United Kingdom and some other Commonwealth countries, is a bridge, road, railway or similar structure that is over another road or railway. An overpass and underpass together form a grade separation. [1] Stack interchanges are made up of several overpasses.
Bypassing a crash at the bridge; Allowing an oversize load to bypass a low bridge; Some factors make turning left onto a diverging diamond interchange from the highway ramp more hazardous: 1) There is a yield sign instead of a traffic light. 2) The driver can not see if the light for the through traffic is red or green.
In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a lock or diameter of a tunnel in the case of watercraft.
A freeway lid (also known as a lidded freeway, freeway cap, highway cap or highway deck) is a type of deck bridge built on top of a controlled-access highway or other roadway. It is commonly used to create new parkland in urban areas, but can also be used to house buildings or other heavy structures like convention centers .
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A footbridge (also a pedestrian bridge, pedestrian overpass, or pedestrian overcrossing) is a bridge designed solely for pedestrians. [1] While the primary meaning for a bridge is a structure which links "two points at a height above the ground", a footbridge can also be a lower structure, such as a boardwalk , that enables pedestrians to cross ...