Skew arch
![A masonry skew arch bridge photographed shortly after its completion in 1898, showing the helicoidal nature of its stonework](/Images/godic/202502/11/Sickergill_Skew_Bridge_in_18980351.jpg")
![Store Street Aqueduct from Store Street](/Images/godic/202502/11/Store_Street_Aqueduct0351.jpg")
![Swin Bridge over the River Gaunless](/Images/godic/202502/11/Skew_Bridge_-_geograph.org.uk_-_604850351.jpg")
![A contemporary engraving of Denbigh Hall Bridge](/Images/godic/202502/11/Denbigh_Hall_Bridge_on_the_London_and_Birmingham_railway0351.jpg")
A skew arch (also known as an oblique arch) is a method of construction that enables an arch bridge to span an obstacle at some angle other than a right angle. This results in the faces of the arch not being perpendicular to its abutments and its plan view being a parallelogram, rather than the rectangle that is the plan view of a regular, or "square" arch.