Silver Creek Cliff Tunnel, two-lane road tunnel, Highway 61, northeast of Two Harbors Lafayette Bluff Tunnel, two-lane road tunnel, Highway 61, southwest of Castle Danger Missouri Lindbergh Boulevard Tunnel, twin tunnels, 2006, US Route 67/Lindbergh Boulevard under runway 11/29 at St. Louis-Lambert International Airport in Bridgeton, St. Louis County (four) Rock Island Railroad Tunnels, abandoned rail tunnels, in use 1903/4-1980, Chicago, Rock Island & Pacific Railroad; being developed into a rail trail; from east to west: Freeburg Tunnel/Rock Island Tunnel # 1, abandoned rail tunnel, in use 1903–1980, Chicago, Rock Island & Pacific Railroad, under US 63 in Freeburg in Osage County; being developed into a rail trail Koesltown Tunnel/Argyle Tunnel/Rock Island Tunnel # 2, abandoned rail tunnel, in use 1903–1980, Chicago, Rock Island & Pacific Railroad, under Osage Country Road 541 west of Koeltztown in Osage County; being developed into a rail trail Eugene Tunnel/Rock Island Tunnel # 3, abandoned rail tunnel, in use 1903–1980, Chicago, Rock Island & Pacific Railroad, under State Route 17 just south of Eugene; being developed into a rail trail Vale Tunnel/Rock Island Tunnel # 4, abandoned rail tunnel, in use 1904–1980, Chicago, Rock Island & Pacific Railroad, under Bannister Road southeast of Raytown, Jackson County; developed into a rail trail Montana Nebraska Belmont Tunnel; abandoned rail tunnel, currently a road tunnel; in use as a rail tunnel 1889–1992, bypassed 1992; Chicago, Burlington and Quincy Railroad (later BNSF Railway); in Dawes County between Marsland and Crawford; currently a BNSF service road (four) Scotts Bluff National Monument tunnels, Scotts Bluff National Monument west of Gering in Scotts Bluff County (three) road tunnels on Summit Road, the road to the top of Scotts Bluff National Monument trail tunnel on Saddle Rock Trail, the hiking trail to the top of Scotts Bluff National Monument Nevada Airport Tunnel (Las Vegas), tri tunnels (two road tunnels and one future transit tunnel), under runways 7L/25R and 7R/25L and several taxiways at Las Vegas McCarran International Airport, connecting the Airport Spur Connector (unsigned SR 171) to Paradise Road in Paradise Carlin Tunnels, twin rail tunnels and twin road tunnels, between Carlin and Elko Carlin Rail Tunnels, twin rail tunnels, 1903, Union Pacific Railroad (formerly Central Pacific Railroad and Western Pacific Railroad) Carlin Road Tunnel, twin road tunnels, 1975, I-80, Mile Marker 285, 0.27 miles long Cave Rock Tunnel, twin road tunnels, US 50, along the eastern shore of Lake Tahoe between