Koilwar Bridge is situated at ______.

Correct option is D

The correct answer is (d) Son river

Explanation:

• The Koilwar Bridge, also known officially as the Abdul Bari Bridge, is a historic rail-cum-road bridge spanning the Son River.• It is located at Koilwar in the Bhojpur district, connecting the city of Arrah with Patna, the capital of Bihar.• This bridge is a major engineering landmark, constructed during the British era; construction began in 1856 and it was completed in 1862.• It holds the distinction of being India's oldest operational railway bridge and was once the longest bridge in the Indian subcontinent (until 1900).• The bridge was designed by George Turnbull, often referred to as the "first railway engineer of India."

Information Booster:• The bridge is a lattice girder design made of concrete and steel, measuring approximately 1.44 km (4,726 feet) in length.• In December 2020, a new parallel six-lane road bridge named Vashishtha Narayan Setu (after the famous mathematician) was inaugurated to reduce the traffic load on the old bridge.• The Son River, over which the bridge sits, is one of the largest southern tributaries of the Ganges and originates from the Amarkantak plateau in Madhya Pradesh.• The bridge is famously depicted in scenes from the Academy Award-winning film Gandhi (1982).

Additional Knowledge:Budhi Gandak River (Option a)

• This river flows through north Bihar and joins the Ganges near Khagaria.

• It is known as the Sikrahna in its upper reaches and is not the location of the Koilwar Bridge.

Bagmati River (Option b)

• A major river of Nepal and Bihar, considered holy by Hindus.

• It flows through districts like Sitamarhi and Muzaffarpur but does not have any connection to the Koilwar infrastructure.

Kosi River (Option c)

• Known as the "Sorrow of Bihar" due to its frequent and devastating floods.

• Major bridges over the Kosi include the Kosi Mahasetu (connecting Nirmali and Bhaptiahi), but not the Koilwar Bridge.