White Bridge (The bascule railway bridge)

White Bridge, also known as the bascule railway bridge, is a railway bridge featuring five fixed spans and one roller lift span. It is supported by fourteen iron cylinders, which are weighted with concrete and braced by lattice girders. The bridge is adorned with cast-iron moulded capitals that carry the steel superstructure, including cross-girders and rail-bearers, which rest on bearing girders. The parapet consists of solid panels topped with lattice-work, and three-sided cast-iron pilasters define the bays of each span. The bridge has brick abutments and a sub-structure for the lifting mechanism.

The westernmost lifting span is a balanced cantilever, supported by steel-plate bearing girders and two sets of cylinders. The lattice girders of this span curve down to align with the parapet of the main bridge. The steel-plate cross girders and rail bearers feature cross girders that alternate in projection to support the outriggers of the main girders. The moving span is operated by a gearing system mounted on trestles on cantilevers on either side of the bridge. A curved rack is fixed to the outer face of the main girders, driven by pinions powered by wheels. While these operational details remain intact, the small power house that once housed the electric motor on the south side of the bridge is now in a state of disrepair.