<Li> Fourth Bridge (also known as new road bridge) </Li> <Ul> <Li> Old Godavari Bridge </Li> </Ul> <Li> Old Godavari Bridge </Li> <P> Construction of this bridge started in 1876, and was completed in 1897 . It was constructed under the supervision of F.T. Granville Walton who had constructed the Dufferin Bridge over the Ganges, and Granville Mills, both British engineers . Spanning over 3 km in length, it linked the East Godavari and West Godavari districts . The bridge has been a vital link enabling trains to run between Chennai and Howrah . Trains continued over the bridge for a century until 1997, when train services over the bridge were suspended after the construction of two additional bridges . </P>

Write a note on the river called dakshin ganga