the Son as follows, "After passing the steep escarpments of the Kaimur range, it flows straight across the plain to the Ganges. For much of this distance it is over two miles wide, and at one point, opposite Tilothu three miles wide. In the dry weather there is a vast expanse of sand, with a stream not more than a hundred yards wide, and the hot west winds pile up the sand on the east bank, making natural embankments. After heavy rain in the hills even this wide bed cannot carry the waters of the Son and disastrous floods in Shahabad, Gaya, and Patna are not uncommon." Dams The first dam on the Son was built in 1873–74 at Dehri. The Indrapuri Barrage was constructed, upstream, and commissioned in 1968. The Bansagar Dam in Madhya Pradesh was commissioned in 2008. Bridges The 1.44 Km long rail-cum-road lattice-girder concrete and steel Abdul Bari Bridge or Koilwar Bridge near Arrah in Bihar was completed in November 1862. It remained the longest bridge in India, until the Nehru Setu bridge at Dehri was opened in 1900. After Nehru Setu bridge at Dehri, Railway Bridges are present on Sone River near Chopan, Vijay Sota & Anuppur. The modern Son bridge built in Deolond, Shahdol district of Madhya Pradesh was inaugurated by Motilal Vora and Pandit Ram Kishore Shukla then Chief Minister and Finance Minister of Madhya Pradesh on 13 February 1986. The Government of Bihar sanctioned in 2008 a bridge across the Son River connecting Arwal and Sahar in Bhojpur district. A four-lane road bridge, carrying NH 30, parallel to the existing rail and road Koilwar Bridge, has been planned. Gallery See also List of rivers of India References Tributaries of the Ganges Rivers of Madhya Pradesh Rivers of Jharkhand Rivers of Bihar Rivers of Uttar Pradesh Rivers of India