Prime Minister Narendra Modi inaugurated the Bogibeel Bridge, the longest rail road bridge in India, in which Indian state is this bridge located?

Introduction / Context:
Bogibeel Bridge is an important infrastructure project in the north eastern region of India. It carries both rail and road traffic and stretches across the Brahmaputra River, improving connectivity between different parts of the region. This question asks in which Indian state the Bogibeel Bridge is located, as inaugurated by Prime Minister Narendra Modi.

Given Data / Assumptions:

• Bogibeel Bridge is described as the longest rail road bridge in India.
• It spans the Brahmaputra River in the north east.
• The options list different states of the north eastern region.
• We assume a basic knowledge of Indian geography and major infrastructure projects.

Concept / Approach:
Bogibeel Bridge connects the districts of Dibrugarh and Dhemaji across the Brahmaputra. Both of these districts lie in the state of Assam, even though the bridge enhances access towards Arunachal Pradesh. For geography questions, the location of the bridge is usually taken as the state in which it physically lies, which is Assam. Therefore, Assam is the correct answer.

Step-by-Step Solution:
Step 1: Recall that the Brahmaputra River flows mainly through Assam in the Indian region. Step 2: Remember that Bogibeel Bridge connects Dibrugarh on the south bank and Dhemaji on the north bank, both situated in Assam. Step 3: Understand that while the bridge improves connectivity to Arunachal Pradesh, it is not physically located in Arunachal Pradesh. Step 4: Therefore, the state where the Bogibeel Bridge is located is Assam.

Verification / Alternative check:
Maps of the project and official announcements describe Bogibeel as a bridge across the Brahmaputra in Assam. It forms part of the infrastructure that shortens travel time towards Arunachal Pradesh but starts and ends on land under Assam jurisdiction. This double check through geography and administrative boundaries confirms Assam as the correct answer.

Why Other Options Are Wrong:

• Tripura: Located further south, with no bridge named Bogibeel across the Brahmaputra.
• Sikkim: A Himalayan state without the Brahmaputra flowing through its territory.
• Arunachal Pradesh: Benefits from better connectivity through the bridge, but the physical structure crosses the river within Assam.
• Meghalaya: Lies to the south of Assam and does not host the Bogibeel rail road bridge.

Common Pitfalls:
A frequent mistake is to select Arunachal Pradesh because Bogibeel improves access to that state, and some news headlines mention Arunachal in discussions about connectivity. To avoid this error, focus on the exact wording of the question. It asks where the bridge is located, not which state benefits from it. With that distinction in mind, the answer clearly becomes Assam.

Final Answer:
The Bogibeel rail road bridge, inaugurated by Prime Minister Narendra Modi, is located in the state of Assam.