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Channel Tunnel Rail Link

Transition Slab & Ballasted Tracks

This picture at the entrance of a tunnel section shows the transition between ballasted track and slab track (as laid inside the tunnels).

These transitions where given very special attention during the construction phase to ensure the variation in the type of supporting track platform (flexible to rigid and reciprocally) would not be the cause of too often repeated local maintenance interventions once the line would become fully operational with passengers.

CTRL Section 2 Project
Entente Cordiale
Arrival of First ever Train at St Pancras International
Eurostar under the Barlow shed
Preparation on-board Eurostar before test runs
Review of CTRL-Section 2 project
Test Run on board Eurostar Test Train
Eurostar Test Train T&C Team
Eurostar test train at Stratford
Convoy of RRV
Installation of OCS equipment
Structure Gauge Checks
Gauge 'Hot Spots' checks
Test Track
View of London Tunnel
Multi-Purpose Gantry
Transition Slab & Ballasted Tracks
Multi Purpose Gantry (MPG)
Slab Track Team
Train Tunnel Ventilation Tests
Mauzin Train Tests
Michael Palin visits CTRL