East London Line Extension

Track Layout Design

 

Stuart Maher Limited's Contribution

 

Track design services associated with the following elements of the East London Line Project (overall value £400m).

 

Crystal Palace Platform Turnback

The extent of the design work was from the country end of Crystal Palace station towards Sydenham. The proposal was to provide a double faced platform in the unused area between the Up and Down Sydenham lines formerly occupied by sidings. One face of the new platform provides a turnback for East London Line trains. There is also a new terminating platform face at the back of what was previously platform 3.

 

The design required the Up and Down Sydenham lines to be moved apart to provide room for the connections to the turnback platform. Sliding buffer stops have been provided on each of the new terminating platforms. All work was designed in accordance with the Railway Safety Principles and Guidance document.

 

113A FB Vertical Switch and Crossing (S&C) was provided to cater for all train movements into and out of the new platform configuration.

 

West Croydon Turnback Siding

The extent of the design work was from the country end of West Croydon station towards Waddon and included the realignment of the existing and the introduction of new track. Existing S&C was resited and additional S&C provided to allow access/egress to the new turnback from the main lines. All S&C has been designed in 113A Vertical.

 

South Croydon New Crossover

The extent of the design work included the introduction of new 40mph S&C to give direct access into platform 4 for East London Line trains. The design was complicated in that the Down Slow is curved and the Slow Reversible is straight. The tracks were realigned to enable the new S&C to be installed. In this instance, the S&C specified was NR60 on concrete bearers.