Lucky knot bridge (or knot bridge or knot footbridge) spans the Dragon King Harbor River in Meixi Lake District, Changsha, China.

The 185 m long and 24 m high pedestrian truss bridge, which is bright red in colour, was designed by NEXT architects based in Amsterdam and Beijing and completed in October 2016.

[1][2] The bridge, which started out as a design for an international competition in 2013, was designed keeping tourist activities in mind.

The design is inspired by a Möbius strip as well as Chinese knotting.

[3] However, mathematically, the bridge forms a two-sided surface, in which the top side of one of its pathways loops back to form the bottom side of the other pathway, so it is not a true Möbius strip.