In a historic moment, the railways has connected the two ends of the main arch of the world's highest bridge on the Chenab river in Jammu and Kashmir's Reasi district which will provide direct connectivity to Kashmir Valley.
The iconic bridge will soar 359 metres above the bed of the river and will be 30 metres higher than the iconic Eiffel Tower in Paris.
Railway officials termed the development a "historic" one.
Union Railway Minister Piyush Goyal had recently shared the news on Twitter.
"In a historic moment, the arch bottom of the Chenab bridge has been completed today. Next, the arch upper of the engineering marvel in making will be completed," he said.
The last remaining section, the 111 km Katra-Banihal section is currently under execution, officials said, adding that 126 km out of 174 km of tunnels on this section has already been completed.
They said the project is, perhaps, the most difficult new railway line project undertaken in the entire Indian subcontinent.
The terrain passes through young Himalayas, which are full of geological surprises and numerous problems. For execution purposes, the project has been divided into three sub-sections, they said.
Katra-Qazigund leg, the most difficult stretch of the project, and its alignment of this stretch which is 129 km long, passes through Patni and Pir Panjal ranges, they said.
This alignment requires construction of 62 important and major bridges and minor bridges, besides construction of 35 tunnels, totalling a length of 103 km and bringing the percentage of the total length of the alignment of tunnels to approximately 80 per cent.
The Udhampur-Srinagar-Baramulla rail project is highly essential to provide an alternative and reliable transportation system to Jammu and Kashmir to join Kashmir Valley to the Indian Railways network, the officials said.
They said that in view of the importance of this project in providing seamless and hassle-free connectivity in Jammu and Kashmir, the project was declared as a national project in 2002.