India has opened its longest bridge in the country’s northeast to strengthen its defenses close to a disputed border with China. The bridge is one of several projects whose construction has been sped up to make it easier for troops and artillery to travel to Arunachal Pradesh state, in the Himalayas. China claims the state as its territory. It calls the area South Tibet. The 9.15-kilometer-long Dhola Sadiya Bridge crosses over the Brahmaputra River. It has been designed to carry the weight of 60-ton battle tanks. The bridge connects Arunachal Pradesh with the northeastern state of Assam. Construction began in 2011.