Explanation: The Dhol-Sadiya Bridge, also known as the Lohit Bridge, is the longest river bridge in India, located in the state of Assam. It spans the Lohit River, a major tributary of the Brahmaputra, and connects the districts of Dibrugarh and Sivasagar. The bridge is a significant infrastructure project that has greatly improved connectivity in the region, facilitating transportation and economic activities.
The Dhol-Sadiya Bridge is approximately 9.15 kilometers (5.69 miles) long, making it the longest river bridge in India. It was completed in 2017 and is a vital link in the national highway network, connecting the northeastern states of India with the rest of the country. The bridge is a testament to modern engineering and construction techniques, designed to withstand the challenging environmental conditions of the region, including heavy rainfall and seismic activity.
In contrast, other notable bridges in Assam, such as the Bogibeel Bridge, Saraighat Bridge, and Kolia Bhomora Bridge, are significant in their own right but do not surpass the Dhol-Sadiya Bridge in length. The Bogibeel Bridge, for instance, is a recent and highly publicized project that spans the Brahmaputra River and is known for its engineering complexity and strategic importance. However, it is shorter than the Dhol-Sadiya Bridge.
The Saraighat Bridge, located in Guwahati, is a historic bridge that holds cultural and historical significance as the first rail-cum-road bridge over the Brahmaputra River. It played a crucial role in the development of the region and is a symbol of the progress made in Assam. However, it is not the longest river bridge in India.
The Kolia Bhomora Bridge, another important bridge in Assam, also spans the Brahmaputra River and is a significant structure for the region. It is known for its architectural design and engineering, but it is not the longest river bridge in India.
Understanding the geographical and infrastructural features of Assam, including its major river bridges, is essential for students preparing for competitive examinations such as the UPSC Civil Services and State PSC Exams. The Dhol-Sadiya Bridge stands out as a landmark project that showcases the advancements in infrastructure development in the northeastern part of India.