Haltwhistle Iron Bridge
Wrought iron arch bridge with three spans over the River Tyne. Built as a road bridge, now a footbridge.
Length over abutments 238 ft. Length between abutments 198 ft.
Completed 1876, replacing a timber bridge. Cost £2750.
The foundations for the piers are cast iron cylinders 5 ft 6" sunk deep in the clay. The tops of the cylinders are visible in Photo 7. Five piles were driven into each cylinder. The round piers are made from specially-moulded firebricks, and each is topped by a stone disc 4 ft diameter and 1 ft thick, above which are the brick skewbacks from which are sprung the wrought iron arches (Photos 6 & 7). There are brick arches connecting neighbouring piers, and also four iron I-beams which are cemented into the piers and also bolted to the core piles within the pier cylinders. The spandrels (the areas between the arches and the deck beams) are filled with lattice ironwork (assembled from flat bars and angle iron - see Photo 5). The parapets and cornices are assembled from numerous identical iron castings, decorated with quatrefoil shapes (Photos 8 & 9).
For more information, see 'Engineering', 24 November 1876
Sources of Information
-  'Engineering', 24 November 1876, p.443