# Project Unigauge

Project Unigauge, started on 1 April 1992, is an ongoing effort by Indian Railways to convert and unify almost all rail gauges in India to 1,676 mm (5 ft 6 in) broad gauge.

## Progress

| Year | Gauge | Gauge | Gauge | Gauge | Gauge | Gauge | Gauge |
| Year | Broad gauge (BG) (1,676 mm (5 ft 6 in)) | Broad gauge (BG) (1,676 mm (5 ft 6 in)) | Metre gauge (MG) (1,000 mm (3 ft 3+3⁄8 in)) | Metre gauge (MG) (1,000 mm (3 ft 3+3⁄8 in)) | Narrow gauges (NG) (762 mm (2 ft 6 in) and 610 mm (2 ft)) | Narrow gauges (NG) (762 mm (2 ft 6 in) and 610 mm (2 ft)) | All gauges |
| Year | Route km | Route share | Route km | Route share | Route km | Route share | Route km |
| 1947 | 25,170 | 46.14% | 24,153 | 44.28% | 5,225 | 9.58% | 54,548 |
| 1971 (Mar) | 29,449 | 49.25% | 25,865 | 43.26% | 4,476 | 7.49% | 59,790 |
| 1972 (Mar) | 30,041 | 50.01% | 25,550 | 42.54% | 4,476 | 7.45% | 60,067 |
| 1973 (Mar) | 30,126 | 50.09% | 25,547 | 42.47% | 4,476 | 7.44% | 60,149 |
| 1974 (Mar) | 30,210 | 50.15% | 25,548 | 42.41% | 4,476 | 7.43% | 60,234 |
| 1975 (Mar) | 30,274 | 50.20% | 25,551 | 42.37% | 4,476 | 7.42% | 60,301 |
| 1976 (Mar) | 30,497 | 50.65% | 25,427 | 42.23% | 4,292 | 7.13% | 60,216 |
| 1977 (Mar) | 30,873 | 50.89% | 25,512 | 42.05% | 4,281 | 7.06% | 60,666 |
| 1978 (Mar) | 30,909 | 50.93% | 25,503 | 42.02% | 4,281 | 7.05% | 60,693 |
| 1979 (Mar) | 31,130 | 51.22% | 25,366 | 41.74% | 4,281 | 7.04% | 60,777 |
| 1980 (Mar) | 31,228 | 51.25% | 25,424 | 41.72% | 4,281 | 7.03% | 60,933 |
| 1981 (Mar) | 31,827 | 51.97% | 25,167 | 41.10% | 4,246 | 6.93% | 61,240 |
| 1982 (Mar) | 32,290 | 52.74% | 24,694 | 40.33% | 4,246 | 6.93% | 61,230 |
| 1983 (Mar) | 32,624 | 53.15% | 24,515 | 39.94% | 4,246 | 6.92% | 61,385 |
| 1984 (Mar) | 32,700 | 53.21% | 24,514 | 39.89% | 4,246 | 6.91% | 61,460 |
| 1985 (Mar) | 33,553 | 54.25% | 24,051 | 38.89% | 4,246 | 6.86% | 61,850 |
| 1986 (Mar) | 33,669 | 54.45% | 23,921 | 38.68% | 4,246 | 6.87% | 61,836 |
| 1987 (Mar) | 33,665 | 54.46% | 23,901 | 38.67% | 4,247 | 6.87% | 61,813 |
| 1988 (Mar) | 33,832 | 54.59% | 23,898 | 38.56% | 4,246 | 6.85% | 61,976 |
| 1989 (Mar) | 34,108 | 55.03% | 23,631 | 38.12% | 4,246 | 6.85% | 61,985 |
| 1990 (Mar) | 34,544 | 55.53% | 23,599 | 37.93% | 4,068 | 6.54% | 62,211 |
| 1991 (Mar) | 34,880 | 55.93% | 23,419 | 37.55% | 4,068 | 6.52% | 62,367 |
| 1992 (Mar) | 35,109 | 56.21% | 23,283 | 37.28% | 4,066 | 6.51% | 62,458 |
| 1993 (Mar) | 36,504 | 58.42% | 21,997 | 35.20% | 3,985 | 6.38% | 62,486 |
| 1994 (Mar) | 37,824 | 60.56% | 20,653 | 33.06% | 3,985 | 6.38% | 62,462 |
| 1995 (Mar) | 39,612 | 63.22% | 19,210 | 30.66% | 3,838 | 6.13% | 62,660 |
| 1996 (Mar) | 40,620 | 64.56% | 18,501 | 29.41% | 3,794 | 6.03% | 62,915 |
| 1997 (Mar) | 41,971 | 66.91% | 17,044 | 27.17% | 3,710 | 5.91% | 62,725 |
| 1998 (Mar) | 43,083 | 68.94% | 15,804 | 25.29% | 3,608 | 5.77% | 62,495 |
| 1999 (Mar) | 44,216 | 70.40% | 15,178 | 24.17% | 3,415 | 5.44% | 62,809 |
| 2000 (Mar) | 44,383 | 70.72% | 15,013 | 23.92% | 3,363 | 5.36% | 62,759 |
| 2001 (Mar) | 44,776 | 71.04% | 14,987 | 23.78% | 3,265 | 5.18% | 63,028 |
| 2002 (Mar) | 45,099 | 71.43% | 14,776 | 23.40% | 3,265 | 5.17% | 63,140 |
| 2003 (Mar) | 45,622 | 72.28% | 14,364 | 22.76% | 3,136 | 4.97% | 63,122 |
| 2004 (Mar) | 46,807 | 74.04% | 13,290 | 21.02% | 3,124 | 4.94% | 63,221 |
| 2005 (Mar) | 47,749 | 75.24% | 12,662 | 19.95% | 2,924 | 4.81% | 63,465 |
| 2006 (Mar) | 48,574 | 76.70% | 11,834 | 18.69% | 2,924 | 4.62% | 63,332 |
| 2007 (Mar) | 49,820 | 78.67% | 10,621 | 16.77% | 2,886 | 4.56% | 63,327 |
| 2008 (Mar) | 51,082 | 80.73% | 9,442 | 14.92% | 2,749 | 4.34% | 63,273 |
| 2009 (Mar) | 52,808 | 82.49% | 8,473 | 13.24% | 2,734 | 4.27% | 64,015 |
| 2010 (Mar) | 54,257 | 84.81% | 7,180 | 11.22% | 2,537 | 3.97% | 63,974 |
| 2011 (Mar) | 55,188 | 85.62% | 6,809 | 10.56% | 2,463 | 3.82% | 64,460 |
| 2012 (Mar) | 55,956 | 86.62% | 6,347 | 9.83% | 2,297 | 3.56% | 64,600 |
| 2013 (Mar) | 57,140 | 87.32% | 5,999 | 9.17% | 2,297 | 3.51% | 65,436 |
| 2014 (Mar) | 58,177 | 88.40% | 5,334 | 8.11% | 2,297 | 3.49% | 65,808 |
| 2015 (Mar) | 58,825 | 89.09% | 4,908 | 7.43% | 2,297 | 3.48% | 66,030 |
| 2016 (Mar) | 60,510 | 90.74% | 3,880 | 5.82% | 2,297 | 3.44% | 66,687 |
| 2017 (Mar) | 61,680 | 91.56% | 3,479 | 5.16% | 2,209 | 3.28% | 67,368 |
| 2018 (Mar) | 62,049 | 92.70% | 3,201 | 4.78% | 1,685 | 2.52% | 66,935 |
| 2019 (Mar) | 62,891 | 93.29% | 2,839 | 4.21% | 1,685 | 2.50% | 67,415 |
| 2020 (Mar) | 63,950 | 94.10% | 2,402 | 3.54% | 1,604 | 2.36% | 67,956 |
| 2021 (Mar) | 64,403 | 94.57% | 2,112 | 3.10% | 1,588 | 2.33% | 68,103 |
| 2022 (Mar) | 65,093 | 95.67% | 1,655 | 2.43% | 1,294 | 1.90% | 68,043 |
| 2023 (Mar) | 65,977 | 96.20% | 1,345 | 1.96% | 1,262 | 1.84% | 68,584 |
| 2024 (Mar) | 66,820 | 96.59% | 1,159 | 1.68% | 1,202 | 1.74% | 69,181 |

## Lines that were scrapped

These lines were dismantled without a broad-gauge replacement. These were mostly industrial railways, forest railways, etc.
* Champaner Road – Pani Mines 49 kilometres (30 mi)
* Godhra Junction – Lunavada 41.5 kilometres (25.8 mi)
* Mahuva Junction – Velavadar 55 kilometres (34 mi)
* Than – Chotila 22 kilometres (14 mi)
* Victor – Dungar Junction 7 kilometres (4.3 mi)
* Sanganer – Toda Rai Singh 104.4 kilometres (64.9 mi)
* Ujjain Junction – Agar 68 kilometres (42 mi)
* Dudhwa – Chandan Chauki 12 kilometres (7.5 mi)
* Dudhwa – Gauri Phanta 23.3 kilometres (14.5 mi)

## Lines which are to be preserved (will not be converted)

These lines have their original gauge preserved as these are identified as heritage railways. Some of these are also among the UNESCO World Heritage Sites in India.
* Darjeeling Himalayan Railway 88 kilometres (55 mi) (Narrow Gauge - 610 mm)
* Kalka–Shimla Railway 96.6 kilometres (60.0 mi) (Narrow Gauge - 762 mm)
* Kangra Valley Railway 164 kilometres (102 mi) (Narrow Gauge - 762 mm)
* Matheran Hill Railway 21 kilometres (13 mi) (Narrow Gauge - 610 mm)
* Nilgiri Mountain Railway 46 kilometres (29 mi) (Meter Gauge - 1000 mm)