Category:Tunnels in the United States opened in the 20th century

Countries of the Americas: Canada · United States of America

Tunnels in the United States by century of opening: 19th century · 20th century · 21st century ·

See also category: Tunnels in the United States closed in the 20th century.

Subcategories

This category has the following 12 subcategories, out of 12 total.

Media in category "Tunnels in the United States opened in the 20th century"

This category contains only the following file.

Construction of forebay leading into penstock tunnels, May 30, 1911 (SPWS 114).jpg 768 × 610; 94 KB

Retrieved from "https://commons.wikimedia.org/w/index.php?title=Category:Tunnels_in_the_United_States_opened_in_the_20th_century&oldid=856907559"