The correct answer is: A. Pandoh Bridge
The Pandoh Bridge is a suspension bridge that connects Hamirpur and Kangra districts of Himachal Pradesh. It is located on the Sutlej River and was built in 1977. The bridge is 1,315 meters long and has a main span of 420 meters. It is one of the longest bridges in India.
The Nadaun Bridge is a railway bridge that connects Nadaun and Kangra districts of Himachal Pradesh. It is located on the Pathankot-Jammu Railway Line and was built in 1903. The bridge is 1,000 meters long and has a main span of 200 meters.
The Mandi Bridge is a road bridge that connects Mandi and Kullu districts of Himachal Pradesh. It is located on the Mandi-Kullu National Highway and was built in 1972. The bridge is 600 meters long and has a main span of 100 meters.
The Luri Bridge is a road bridge that connects Hamirpur and Bilaspur districts of Himachal Pradesh. It is located on the Hamirpur-Bilaspur National Highway and was built in 1998. The bridge is 400 meters long and has a main span of 80 meters.