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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 .
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.
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.
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.
The Central–Wan Chai Bypass is a 4-kilometre (2.5 mi) trunk road running between Sheung Wan and Fortress Hill on Hong Kong Island.The original design consists of a 2.3 km dual three-lane tunnel running under new reclamation areas provided by the Central and Wan Chai Reclamation project, [1] and also connections to Connaught Road West flyover and Island Eastern Corridor.
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]
A diagram of a Texas U-turn, also known as a Texas turnaround (this one with the local road over the limited-access highway) A Texas U-turn, or Texas turnaround, boomerang, or loop around, [citation needed] is a lane allowing cars traveling on one side of a one-way frontage road to U-turn onto the opposite frontage road (typically crossing over or under a freeway or expressway).
A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, [a] motorway, [b] and expressway. [c] Other similar terms include throughway or thruway [d] and parkway.