Mechanical Engineering, bridge bearings, structural engineering Specialists In Structural Movement Control

The Crum Creek Viaduct, originally a pre-Civil War era five-span timber arch truss rail bridge on tall masonry piers, was re-built in 1895 as a steel viaduct with the line electrified in the late 1920’s by the Pennsylvania Railroad. The Viaduct carries the Media/Elwyn commuter rail line and is located between Swathmore and Wallingford stations, Delaware County.

This rail structure, spanning an approximate length of 915ft and standing 90ft high, was acquired by SEPTA in 1983. At this time, emergency repair works on the structure had been undertaken to resolve the severe steel corrosion issues and extend the life of the bridge. Despite additional repairs performed in 2002, 2013 and 2014 the existing viaduct had reached the end of its serviceable life and required replacing to ensure continued safe and efficient rail service. SEPTA had partnered with Walsh Construction, who were employed to build the new viaduct at Crum Creek. Construction works by Walsh Construction were to take 2 years, commencing in March 2015 with substantial completion by Labour Day 2016.

In 2009/10 the DLR Canning Town Flyover was constructed as part of the 3-Car Capacity Enhancement Project to serve Canning Town high-level DLR station, taking the Beckton line over the City Airport and Canning Town low-level DLR station lines. It is formed from a number of different structures connected by a continuous in-situ reinforced concrete deck measuring a length of 330m. The flyover’s location is close to and within the influence zone of Crossrail’s construction works being carried out at the Limmo Peninsular site. Here two deep, large diameter shafts provide access to twin bored Eastern Running tunnels that lead towards Victoria Dock Portal.