Complex sentence: After completion of bridge metre-gauge lines were laid by them from Mandapam up to Pamban Station, from here the railway lines bifurcated into two directions one towards Rameshwaram about up and another branch line of terminating at Dhanushkodi.
Split into simpler sentences: After completion of the bridge, metre-gauge lines were laid from Mandapam up to Pamban station. From here the railway line bifurcated, one line towards Rameshwaram about up and another branch line of terminating at Dhanushkodi.