3 ft gauge railroads in the United States

Track gauge
By transport mode
Rapid transit Tram Miniature Scale model
By size (list)
Minimum   Fifteen inch 381 mm (15 in)   Narrow   600 mm 600 mm (1 ft 11+5⁄8 in) Two foot 610 mm (2 ft) Two foot three inch 686 mm (2 ft 3 in)   750 mm 750 mm (2 ft 5+1⁄2 in) Bosnian gauge 760 mm (2 ft 5+15⁄16 in) Two foot six inch 762 mm (2 ft 6 in)   Swedish three foot 891 mm (2 ft 11+3⁄32 in) 900 mm 900 mm (2 ft 11+7⁄16 in) Three foot 914 mm (3 ft) Italian metre 950 mm (3 ft1+13⁄32 in)   Metre 1,000 mm (3 ft 3+3⁄8 in)   Three foot six inch 1,067 mm (3 ft 6 in)   Four foot 1,219 mm (4 ft)   Four foot six inch 1,372 mm (4 ft 6 in)   1432 mm 1,432 mm (4 ft 8+3⁄8 in)   Standard 1,435 mm (4 ft 8+1⁄2 in)   Broad   Italian broad gauge 1,445 mm (4 ft 8+7⁄8 in) Dresden gauge 1,450 mm (4 ft 9+3⁄32 in)   Leipzig gauge 1,458 mm (4 ft 9+13⁄32 in)   Toronto gauge 1,495 mm (4 ft 10+7⁄8 in)   1520 mm 1,520 mm (4 ft 11+27⁄32 in) Five foot 1,524 mm (5 ft)   Pennsylvania gauge 1,581 mm (5 ft 2+1⁄4 in) Pennsylvania gauge 1,588 mm (5 ft 2+1⁄2 in) Five foot three inch 1,600 mm (5 ft 3 in)   Baltimore gauge 1,638 mm (5 ft 4+1⁄2 in)   Iberian gauge 1,668 mm (5 ft 5+21⁄32 in) Five foot six inch 1,676 mm (5 ft 6 in)   Six foot 1,829 mm (6 ft)   Brunel 2,140 mm (7 ft 1⁄4 in)   Breitspurbahn 3,000 mm (9 ft 101⁄8 in)
Change of gauge
Bogie exchange Break of gauge Dual gauge Conversion list Variable gauge
By location
North America South America Europe Australia

This is a list of 3 ft (914 mm) narrow-gauge railways in the United States.

Narrow-gauge railroads of various sizes existed across the US, especially during the late 1800s, with the most popular gauge being 3 ft gauge.^[1][2] Some of the more famous 3 ft gauge railroad networks in the US were based in California, Colorado, and Hawaii. These narrow-gauge lines were easier to build than standard gauge and cost significantly less to construct. Some of the lines of these former networks still exist in the present day and continue to use 3 ft gauge track, while the rest were either widened to standard gauge or abandoned (see table below).

• Narrow-gauge railroads in the United States
• Heritage railway
• 2 ft gauge railroads in the United States
• 2 ft 6 in gauge railroads in the United States
• 3 ft gauge railways in the United Kingdom
• Three foot six inch gauge railways in the United States
• Three foot gauge locomotives on the U.S. National Register of Historic Places
  • Rio Grande 168 (operational)
  • Rio Grande 169 (static display)
  • Rio Grande 223 (stored)
  • Rio Grande 278 (static display)
  • Rio Grande 315 (operational)
  • Rio Grande 463 (operational)
  • ET&WNC No. 12 (operational)
  • Eureka Locomotive (operational)
  • Glenbrook Locomotive (operational)

• Broggie, Michael (2014), Walt Disney's Railroad Story: The Small-Scale Fascination That Led to a Full-Scale Kingdom (4th ed.), The Donning Company Publishers, ISBN 978-1-57864-914-3