Udhampur–Srinagar– Baramula Rail Link (USBRL)
km Uri Gingal Limber Sheeri 324.79 Baramulla Kupwara Line (in progress) Kupwara Jaggerpora Handwara Dangiwacha Ferozepora 317.44 Sopore 310.24 Hamre 302.15 Pattan 293.81 Mazhom 287.35 Nadigam Halt 280 Budgam 268.06 Srinagar 261.94 Pampore Jhelum Bridge 256.34 Kakapora 252.56 Ratnipora Halt 245.74 Awantipora 239.24 Panzgom Shopian Line (in progress) 232.02 Bijbehara to Pahalgam (in progress) 225.94 Anantnag 218.24 Sadura 207.64 Qazigund Banihal-QazigundRailway Tunnel (11.215 km) 190 Banihal Tunnels T53-T55 Tunnel T52 (8.61 km) 175.35 Khari Tunnel T51 Tunnel T50 (12.775 km) 161.28 Sumber Tunnel T49 (10.178 km) Tunnels T45-T48 141.91 Sangaldan Tunnel T44 (11.13 km) Tunnel T43 (6.292 km) 123.51 Sawalkote Tunnel T42 (9.316 km) 113.99 Dugga Tunnels T38-T41 Tunnel T37 (3.493 km) Chenab Rail Bridge 102.58 Bakkal Tunnel T36 (5.941 km) 96.24 Reasi Tunnel T35 (3.007 km) Anji Khad Bridge Tunnel T34 (5.098 km) Tunnel T33 (3.209 km) Tunnels T31-T32 78.03 Shri Mata VaishnoDevi Katra Tunnel T30 Jhajjar Khad Bridge Tunnels T25-T29 62.45 Chak Rakhwal Tunnel T24 Tunnel T23 (3.12 km) Tunnels T21-T22 Bhadarwah Line(planned) 53.15 Udhampur 43.65 Ram Nagar Tunnels T14-T20 Tawi Bridge 31.8 Manwal billawar Line(planned) Tunnels T10-T13 21.87 Sangar Tunnels T4-T9 11.04 Bajalta Tunnels T1-T3 Poonch line(planned) 0 Jammu Tawi Jalandhar–Jammu line km
km
Uri
Gingal
Limber
Sheeri
324.79Baramulla
Kupwara Line (in progress)
Kupwara Line (in progress)
Kupwara
Jaggerpora
Handwara
Dangiwacha
Ferozepora
317.44Sopore
310.24Hamre
302.15Pattan
293.81Mazhom
287.35Nadigam Halt
280Budgam
268.06Srinagar
261.94Pampore
Jhelum Bridge
256.34Kakapora
252.56Ratnipora Halt
245.74Awantipora
239.24Panzgom
Shopian Line (in progress)
Shopian Line (in progress)
232.02Bijbehara
to Pahalgam (in progress)
225.94Anantnag
218.24Sadura
207.64Qazigund
Banihal-QazigundRailway Tunnel (11.215 km)
Banihal-Qazigund
Railway Tunnel
190Banihal
Tunnels T53-T55
Tunnel T52 (8.61 km)
175.35Khari
Tunnel T51
Tunnel T50 (12.775 km)
161.28Sumber
Tunnel T49 (10.178 km)
Tunnels T45-T48
141.91Sangaldan
Tunnel T44 (11.13 km)
Tunnel T43 (6.292 km)
123.51Sawalkote
Tunnel T42 (9.316 km)
113.99Dugga
Tunnels T38-T41
Tunnel T37 (3.493 km)
Chenab Rail Bridge
102.58Bakkal
Tunnel T36 (5.941 km)
96.24Reasi
Tunnel T35 (3.007 km)
Anji Khad Bridge
Tunnel T34 (5.098 km)
Tunnel T33 (3.209 km)
Tunnels T31-T32
78.03Shri Mata VaishnoDevi Katra
Shri Mata Vaishno
Devi Katra
Tunnel T30
Jhajjar Khad Bridge
Tunnels T25-T29
62.45Chak Rakhwal
Tunnel T24
Tunnel T23 (3.12 km)
Tunnels T21-T22
Bhadarwah Line(planned)
Bhadarwah Line
(planned)
53.15Udhampur
43.65Ram Nagar
Tunnels T14-T20
Tawi Bridge
31.8Manwal
billawar Line(planned)
billawar Line
(planned)
Tunnels T10-T13
21.87Sangar
Tunnels T4-T9
11.04Bajalta
Tunnels T1-T3
Poonch line(planned)
Poonch line
(planned)
0Jammu Tawi
Jalandhar–Jammu line
km
This diagram:viewtalkedit

USBRL Tunnel 50 (also known as T-50) is the longest transportation tunnel in India, with a length of 12.775 kilometers. It is located on the Udhampur-Srinagar-Baramulla Rail Link (USBRL) project, between the Sumber and Khari stations in the Union territory of Jammu and Kashmir. The tunnel was completed in February 2024 and is part of the Katra-Banihal section of the USBRL. The tunnel significantly enhances connectivity within Jammu and Kashmir and is a key component of India's efforts to improve transportation infrastructure in the region.

The tunnel was constructed using the New Austrian Tunneling Method (NATM) and was built by Afcons Infrastructure. It features modern safety systems, including escape tunnels, real-time monitoring, and emergency provisions.

Relation to Tunnel 51

Tunnel 50 and Tunnel 51 are two separate tunnels between Sumber and Khari stations. While they appear as a single continuous tunnel, they are actually separated by a false tunnel constructed over a 15-meter bridge spanning a stream. This false tunnel, designed to resemble the interior of a regular tunnel, makes the separation between T50 and T51 difficult to perceive. Tunnel 51, located at the Khari end, is 268.1 meters long and is connected to Tunnel 50 by the false tunnel, and part of the Khari station yard is located inside both tunnels. According to an official explanation, the false tunnel has a truss structure above it which was built primarily for protection against rockfalls in this section, ensuring the safety of trains passing over the bridge.

When considering the total length of Tunnel 50, Tunnel 51, and the approximately 15-meter-long false tunnel, the entire tunnel–bridge–tunnel structure spans over 13 kilometers, making it one of the longest such continuous sections on the USBRL route.