Ariyalur-Valadi track-doubling work to be complete by December 2012 April 24, 2011 | Asia Pacific News Track-doubling work on the 50-km stretch from Ariyalur to Valadi in the Villupuram-Tiruchi broad-gauge section of the railway in Tamil Nadu state, India, is targeted for completion by December 2012. ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password