U.S. see UNITED STATES
UIMISELA COAL COMPANY RAILROAD (OH) 3’2” Mine
1877 18?? [Po]
UINTAH RAILWAY (CO/UT) 3' Mine 1903 1939 68 miles [E/G/T]
{H/RM/X}
Ulster & Delaware Railroad Narrow Gauge Division (NY) part
of KAATERSKILL RAILROAD; STONEY COVE & CATSKILL MOUNTAIN RAILROAD
COMPANY
UNAKA LUMBER COMPANY RAILROAD (SC) 3' Log 1910 1920 [LR/Tb]
{Fe}
UNCLE SAM PLANTATION RAILROAD (LA) 3’ Farm 10 miles
[Tb] {Bu}
UNDERHILL (W.A.) BRICK COMPANY RAILROAD (NJ) 3’
Ind 1903 19?? [Po]
Unicoi Railway (TN) part of JOHNSON CITY BAKERSVILLE
& SOUTHERN RAILWAY
UNION CEMENT & LIME COMPANY RAILROAD (IN) 3’3”
Ind 1882 18?? [Po]
Union City Lumber Company Railroad (KY) see RED RIVER
VALLEY RAILROAD COMPANY
UNION COAL & MINING COMPANY RAILROAD (IA) 3’1¾”
Mine 1872 18?? [Po]
UNION COAL & MINING COMPANY RAILROAD (IA) 3’1¾”
Mine 1872 18?? [Po]
Union Coal Company Railroad (PA) see RICHLAND MINE RAILROAD
UNION CONSOLIDATED MINING COMPANY RAILROAD (TN) 3’
Mine 1873 18?? [Po]
UNION CONSTRUCTION COMPANY RAILROAD (CA) 3’ Log
1906 19?? [Li]
UNION IRON & STEEL COMPANY RAILROAD (IL) 2’6”
Ind 1882 19?? [Po]
UNION LIMESTONE COMPANY RAILROAD (PA) 3’ Mine 1926
19?? [Po]
Union Mining Company Railroad (MD) see MOUNT SAVAGE FIRE
BRICK WORKS RAILROAD
Union Pacific Denver & Gulf Railway Clear Creek Division
(CO) part of COLORADO CENTRAL RAILROADY
Union Pacific Denver & Gulf Railway South Park Division
(CO) part of DENVER SOUTH PARK & PACIFIC RAILWAY
UNION
PACIFIC RAILWAY COMPANY TIMBER TREATING PLANT RAILROAD (ID) 2’6” Ind [X]
Union Plank Walk & Railroad (CA) part of ARCATA
& MAD RIVER RAILROAD
UNION PLANTATION RAILROAD (LA) 3’ Farm 12 miles [Bu]
UNION STEEL WORKS NARROW GAUGE RAILROAD (PA) 2’
Ind 1905 19?? [Po]
Union Street Railroad (CA) part of SANTA ROSA
STREET RAILWAYS
UNION TRACTION COMPANY OF SANTA CRUZ (CA) 3’2½”
Str 1877 1906bg 16 miles [Tb] {F/X}
UNION TRUNK LINE COMPANY (WA) 3’6” Str 1890
1940 7 miles [Tb] {Hi}
United Fruit Company Railroad (LA) see GULF NAVAL STORES
RAILROAD
UNITED LUMBER COMPANY RAILROAD (NC) 2’6” Log
1920 19?? [Li]
United Morelos Irolo & Acapulco Railway (MX) part
of INTEROCEANIC RAILWAY OF MEXICO
United Morelos Irolo & Vera Cruz Interoceanic Railway
(MX) part of INTEROCEANIC RAILWAY OF MEXICO
UNITED RAILROADS OF YUCATAN (MX) 3’ Gen 1878 1953sg
469 miles {B/Lo/X}
UNITED STATES AIR FORCE RAILWAY (NF) 3'6" Mil 1941 1963
10 miles [Tb/Tsu2]
UNITED STATES ALUMINUM COMPANY RAILROAD (NY) 3’
Ind 1915 19?? [Po]
United States Bureau of Reclamation Railroad (CA) see
RYER ISLAND RECLAMATION PROJECT RAILROAD
UNITED STATES BUREAU OF RECLAMATION RAILROAD (NV) 3’
Con 1911 19?? [MN/Tb]
United States Cast Iron Pipe & Foundry Company Railroad
(OH) see ADDYSTON & OHIO RIVER RAILROAD COMPANY
United States Gypsum Company Railroad (CA) see PACIFIC
CEMENT PLASTER COMPANY RAILROAD; PLASTER CITY RAILROAD
United States Gypsum Company Railroad (NV) see ARDEN PLASTER
COMPANY RAILROAD
UNITED STATES GYPSUM COMPANY RAILROAD (OK) 3' Mine [X]
United States Navy Railroad (CA) see MARE ISLAND RAILROAD
United States Navy Railroad (HA) PEARL HARBOR NAVAL STATION
RAILROAD
UNITED STATES PENITENTIARY RAILROAD (KS) 2’6½”
Gov 1908 19?? [Po]
United States Potash Company Railroad (CA) see MONOLITH
RAILROAD
UNITED STATES POTASH COMPANY RAILROAD (NM) 3' Mine 1932
1973 16 miles [Tb] {RD}
UNITED STATES SMELTING & REFINING COMPANY RAILROAD
(UT) 1’6” Ind 1916 19?? [Po]
UNITED STATES SMELTING & REFINING COMPANY RAILROAD
(UT) 2’ Ind 1922 19?? [Po]
United States Steel Corporation Railroad (AL) see ENSLEY
OPEN HEARTH NARROW GAUGE RAILROAD
United States Steel Corporation Railroad (IL) see SOUTH
STEEL WORKS NARROW GAUGE RAILROAD
United States Steel Corporation Railroad (OH) see CARNEGIE
STEEL WORKS NARROW GAUGE RAILROAD; YOUNGSTOWN STEEL WORKS NARROW GAUGE RAILROAD
United States Steel Corporation Railroad (PA) see CLAIRTON
STEEL WORKS NARROW GAUGE RAILROAD; DUQUESNE STEEL WORKS NARROW GAUGE RAILROAD; EDGAR THOMSON STEEL WORKS NARROW GAUGE RAILROAD;
HOMESTEAD STEEL WORKS NARROW GAUGE RAILROAD
UNITED STATES STORES COMPANY RAILROAD (UT) 1’6”
Mine 1915 19?? [Po]
UNITED STATES STORES COMPANY RAILROAD (UT) 2’ Ind
1924 19?? [Po]
UNITED VERDE & PACIFIC RAILWAY (AZ) 3' Gen 1894 1920
26 miles [E/G/T] {H/MA/RD}
UNITED VERDE COPPER COMPANY RAILROAD (AZ) 1’8”
Mine 1907 19?? [MA/Tb]
UPCHURCH (THOMAS B.) & BROTHERS COMPANY RAILROAD (NC)
3’ Log 1896 19?? [Li]
UPLAND COAL & COKE COMPANY RAILROAD (WV) 3’8”
Mine 1891 19?? [Po/Tb]
UPPER & O’CONNER COMPANY RAILROAD (IL) 3’2”
Con 1886 18?? [Po]
Uptegrove (William E.) & Brothers Lumber Company Railroad
(TN) see JOHNSON CITY BAKERSVILLE & SOUTHERN RAILWAY
USHER LUMBER & MANUFACTURING COMPANY RAILROAD (MS)
3’6” Log 1914 19?? [Li/LR/ML]
UTAH & NEVADA RAILWAY (UT) 3' Gen 1872 1889sg 40 miles
[E/G/T] {Ca/H/RD}
UTAH & NORTHERN RAILWAY (ID/MT/UT) 3' Gen 1871 1887sg
467 miles [E/G/T] {Ca/H/RD}
UTAH & PLEASANT VALLEY RAILWAY UT 3' Gen 1875 1889sg
60 miles [E/G/T] {Ca/H/RD}
Utah & Western Railway (UT) part of UTAH &
NEVADA RAILWAY
Utah Central Railroad (UT) part of UTAH CENTRAL RAILWAY
UTAH CENTRAL RAILWAY (UT) 3' Gen 1884 1900sg 45 miles
[E/G/T] {Ca/H/RD}
Utah Construction Company Railroad (CA) see OROVILLE EXTENSION CONSTRUCTION RAILROAD; VALLEY NARROW GAUGE RAILROAD
UTAH CONSTRUCTION COMPANY RAILROAD (UT) 3’ 1910
19?? [Po/Tb]
Utah Copper Company Railroad (UT) see BOSTON CONSOLIDATED
MINING COMPANY RAILROAD
Utah Eastern Rail Road (UT) part of ECHO &
PARK CITY RAILROAD
UTAH IRON ORE CORPORATION RAILROAD (UT) 3' Mine 1928 19??
[Li/Tb] {Ca/RD}
Utah Northern Railway (ID/MT/UT) part of UTAH &
NORTHERN RAILWAY
Utah Western Railroad (UT) part of UTAH & NEVADA
RAILWAY
UVALDE STREET RAILWAY (TX) 3’ Str 2’6”
1909 19?? [Po]
