NARROW GAUGE RAILROADS: UNITED STATES, CANADA & MEXICO

DADE COAL COMPANY RAILROAD (TN) 3’ Mine 1874 18?? [Po/Tb]

DAGEN MCLEAN CONSTRUCTION COMPANY RAILROAD (OH) 3’ Con 1902 19?? [Po]

DAIRY FARM MINING COMPANY RAILROAD (CA) 3’ Mine 1915 19?? [Li]

DAISY COAL MINING COMPANY RAILROAD (TN) 3' Mine 1883 18?? [Li]

DALE & BUMBARDNER COMPANY RAILROAD (MN) 3’ Con 1910 19?? [Po]

DALES (J.J.) & COMPANY RAILROAD (GA) 4’ ?? 1873 18?? [Po]

Dallas & Cleburne Railroad (TX) part of DALLAS CLEBURNE & RIO GRANDE RAILROAD

DALLAS CLEBURNE & RIO GRANDE RAILROAD (TX) 3' Gen 1876 1882sg 53 miles [Tb] {H/R)

DALLAS SABINE & NEW ORLEANS RAILROAD (LA) 3' Log 1910 1914 [Li/LR]

DALLAS COAL COMPANY RAILROAD (AR) 2’4” Mine 1908 19?? [Po]

DAMASCUS LUMBER COMPANY RAILROAD (TN) 3’ Log 1909 19?? [K/Li]

DAN VALLEY & YADKIN RIVER NARROW GAUGE RAILROAD (NC) 3' Gen 1880 1883sg [Tb] {X}

Danaher & Malendy Company Railroad (MI) see NORTH BRANCH & SAUBLE RAILROAD

Danaher (C.D.) Pine Company Narrow Gauge Railroad (CA) see PINO GRANDE RAILROAD

Danaher (R.E.) Lumber Company Railroad (CA) see PINO GRANDE RAILROAD

DANIEL & BRINSON COMPANY RAILROAD (TX) 3’ Log 1918 19?? [Li/LR]

Daniel & Willoughby Company Railroad see RICHARDSON (ALVAH) COMPANY RAILROAD

Daniel (C.H.) Company Railroad (TX) see DANIEL & BRINSON COMPANY RAILROAD

DANIEL CONTRACTING COMPANY RAILROAD (CA) 3’ Con 1913 19?? [Po]

DANNER BRICK COMPANY RAILROAD (NJ) 3’ Ind 1895 19?? [Po]

DANVILLE & NEW RIVER RAILROAD (NC/VA) 3' Gen 1873 1903sg 75 miles [E/G/T] {H}

Danville & Western Railroad (VA) part of DANVILLE & NEW RIVER RAILROAD

Danville Macksville & Southwestern Railroad (NC/VA) part of DANVILLE & NEW RIVER RAILROAD

DANVILLE OLNEY & OHIO RIVER RAILROAD (IL) 3' Gen 1869 1881sg 51 miles [E/G/T] {H}

DAUPHIN RAILROAD (PA) 3'6" Log 1899 19?? 20 miles [Tb] {Kn/Ta}

DAVID LOGGING LUMBER & TIE COMPANY RAILROAD (KY) 2'6" Log 19?? 19?? [LR]

DAVIDSON FUEL COMPANY RAILROAD (NM) 3’ Mine 1902 19?? [Li]

DAVIDSON INGRAM LUMBER COMPANY RAILROAD (TX) 3’ Log 1909 19?? [LR/Po/Tb]

Davis (H.G.) and Brother Company Railroad (WV) see WEST VIRGINIA CENTRAL & PITTSBURGH RAILROAD

DAVIS (J.B.) LUMBER COMPANY RAILROAD (MD) 3’ Log 1913 1917 10 miles [Tb] {Kl}

DAVIS (J.B.) LUMBER COMPANY RAILROAD (PA) 3' Log 1920 1930 15 miles [Tb] {Kn/Ta}

DAVIS (LEWIS A.) & BROTHERS COMPANY RAILROAD (FL) 3’ Farm 1885 18?? [Po]

Davis (M.L.) Lumber Company Railroad (AL) see OAK GROVE & GEORGETOWN RAILROAD

DAVIS COAL & COKE COMPANY RAILROAD (WV) 3’6” Mine 1905 19?? [Po]

DAVIS COAL & LAND COMPANY RAILROAD (WV) 3’6” Mine 1930 19?? [Li]

DAVISON CHEMICAL COMPANY RAILROAD (MD) 3’ Ind 1907 19?? [Po/Tb]

DAVYS RUN COAL COMPANY RAILROAD (KY) 3’ Mine 1912 19?? [Po]

DAWN TRAMWAY (ON) 3’ Log 18?? 1901 [Li]

DAWSON ELECTRIC LIGHT & POWER COMPANY RAILROAD (YK) 3’ Str 1909 19?? [Li/Po]

DAWSON FUEL COMPANY RAILROAD (NM) 3’ Mine 1904 19?? [Po/Tb]

DAY (D.H.) LOGGING COMPANY RAILROAD (MI) 3’ Log 19?? 19?? [Po/Tb]

Day Lumber Company Railroad (LA) see COOK DAY LUMBER COMPANY RAILROAD

Dayton & Ironton Railroad (OH) part of TOLEDO CINCINNATI & ST. LOUIS RAILROAD

Dayton & Southeastern Railroad (OH) part of TOLEDO CINCINNATI & ST. LOUIS RAILROAD

Dayton Covington & Toledo Railroad (OH) part of TOLEDO CINCINNATI & ST. LOUIS RAILROAD

Dayton Fort Wayne & Chicago Railroad (OH) part of TOLEDO CINCINNATI & ST. LOUIS RAILROAD

Dayton Sheridan & Grand Ronde Railroad (OR) part of OREGONIAN RAILWAY

DAYTON SUTRO & CARSON VALLEY RAILROAD (NV) 3' Mine 1881 1896 10 miles [Tb] {MN/RD}

DEADWOOD CENTRAL RAILROAD COMPANY (SD) 3' Gen 1888 1930sg 4 miles [E/G/T] {H/X}

DEAN (M.H. & E.A.) COMPANY RAILROAD (PA) 3’ Log 1897 1903 4 miles [Tb] {Kn/Ta}

DEAN COAL MINING COMPANY RAILROAD (KS) 3’ Mine 1911 19?? [Li/Tb]

Death Valley Baby Gauge Railroad (CA) see BABY GAUGE RAILROAD

DEATH VALLEY RAILROAD (CA/NV) 3' Gen 1914 1931 20 miles [E/G/T] {H/MN/RC}

DEE'S TRAM NO. 1 (LA) 4'6" Log 2 miles [Tsu]

DEEP RIVER LUMBER COMPANY RAILROAD (SC) 3' Log 1905 1922sg 15 miles [LR] {Fe}

DEER LAKE PARK & JULIAN RAILROAD (CA) 3’ Tour 1967 19?? [Po]

DEER PARK LUMBER COMPANY RAILROAD (PA) 3’ Log 1924 1931 5 miles [Tb] {Kn/Ta}

Deerfield River Lumber Company Railroad (VT) see DEERFIELD RIVER RAILROAD

DEERFIELD RIVER RAILROAD (VT) 3' Log 1905 1923 30 miles [E/K/Tb] {X}

Deerfield Valley Railroad (MA/VT) part of HOOSAC TUNNEL & WILMINGTON RAILROAD

DEFIANCE COAL COMPANY RAILROAD (NM) 3’4” Mine 1921 19?? [Po/Tb]

Degnan Construction Company Railroad (NY) see DEGNAN REALTY & TERMINAL IMPROVEMENT COMPANY RAILROAD

DEGNAN REALTY & TERMINAL IMPROVEMENT COMPANY RAILROAD (NY) 3’ Con 1906 19?? [Po]

DEGNON MCLEAN CONSTRUCTION COMPANY RAILROAD (OH) 3’ Con 1902 19?? [Po]

DEGNON MCLEAN CONSTRUCTION COMPANY RAILROAD (VA) 3’ Con 1898 19?? [Po]

DEHASS EBY LUMBER COMPANY RAILROAD (LA) 3’ Log 1923 19?? [Li/LR]

DEHAVEN COAL COMPANY RAILROAD (PA) 3’ Mine 193? 19?? [Fe]

DEKOVEN COAL ROAD (KY) 3’8½” Mine 1875 1903sg 2 miles [Po/Tb] {SK}

DELAMAR RAILROAD (CA) 2’6” Log 1905 19?? [X]

DELAND & ST. JOHNS RIVER RAILWAY (FL) 3' Gen 1884 1887sg 6 miles [G/T] {H/P}

DELAWARE MINES RAILROAD (MI) 3’ Mine 1881 18?? [Po/Tb]

DELHI BASKIN & SOUTHWESTERN RAILWAY (LA) 3’ Log 1908 1917 120 miles [E/G/Tb]

DELIGHT LUMBER CMPANY RAILROAD (AR) 3’6” Log 1908 1926 [Li/LR]

Deloy (Francis) Company Railroad (PA) see TROUT RUN RAILROAD COMPANY

DELPHI LUMBER COMPANY RAILROAD (WV) 3' Log 1912 19?? [Cm]

Delphos & Kokomo Railroad (OH) part of TOLEDO CINCINNATI & ST. LOUIS RAILROAD

Delphos Bluffton & Frankfort Railroad (IN) part of TOLEDO CINCINNATI & ST. LOUIS RAILROAD

DELTA CONSOLIDATED MINING COMPANY RAILROAD (CA) 3' Mine 1908 1928 7 miles [Cm] {X}

DELTA CONSTRUCTION COMPANY RAILROAD (LA) 3’ Con 1895 19?? [Po]

DELTA CYPRESS COMPANY RAILROAD (MS) 4' Log 1886 18?? 1 mile [LR/ML/Tsu]

DELTA SHINGLE COMPANY RAILROAD (OR) ?? Log 1918 1926 4 miles [A]

DENNING & SONS COMPANY RAILROAD (??) 3'6" Log 1883 18?? [Li]

DENNIS SIMMONS LUMBER COMPANY RAILROAD (NC) 3' Log 1894 19?? 4 miles [Li/Tb/Tsu]

DENNISON COAL COMPANY RAILROAD (OH) 3’3” Mine 1882 18?? [Po]

Denver & Barkeley Park Rapid Transit (CO) part of DENVER CONSOLIDATED TRAMWAY

Denver & Hill Park Railroad (CO) part of DENVER CONSOLIDATED TRAMWAY

DENVER & MIDDLE PARK RAILROAD (CO) 3' Mine 1883 1898 5 miles [E/G/T] {H/RM/X}

Denver & Middle Park Railway & Mining Company (CO) see DENVER & MIDDLE PARK RAILROAD

DENVER & RIO GRANDE RAILROAD (CO/NM/UT) 3' Gen 1870 1970sg 1761 miles [E/G/T] {H/RD/RM}

Denver & Rio Grande Western Railroad (CO/NM/UT) part of DENVER & RIO GRANDE RAILROAD

Denver & Rio Grande Western Railway (UT) part of DENVER & RIO GRANDE RAILROAD

Denver & Santa Fe Railroad (CO) part of DENVER CIRCLE RAILROAD

Denver & Scranton Railroad (CO) part of COLORADO EASTERN RAILROAD

DENVER & SOUTH PLATTE RAILROAD (CO) 3'6" Str 1907 19?? 10 miles [T/Tb] {X}

Denver Aspen & Grand River Railway (CO) part of DENVER & RIO GRANDE RAILROAD

Denver Boulder & Western Railroad (CO) part of COLORADO & NORTH WESTERN RAILWAY

Denver Cable Railway (CO) part of DENVER CONSOLIDATED TRAMWAY

DENVER CIRCLE RAILROAD (CO) 3' Str 1880 1898 10 miles [E/G/T] {H/RM/X}

Denver City Cable Railway (CO) part of DENVER CONSOLIDATED TRAMWAY

Denver City Electric Railway (CO) part of DENVER CONSOLIDATED TRAMWAY

Denver City Railroad (CO) part of DENVER CONSOLIDATED TRAMWAY

Denver City Railway (CO) part of DENVER CONSOLIDATED TRAMWAY

Denver City Traction Company (CO) part of DENVER CONSOLIDATED TRAMWAY

Denver City Tramway (CO) part of DENVER CONSOLIDATED TRAMWAY

DENVER CONSOLIDATED TRAMWAY (CO) 3'6" Str [Tb] {Hi/X}

Denver Georgetown & Utah Railway (CO) part of DENVER SOUTH PARK & PACIFIC RAILWAY

Denver Land & Coal Company Railroad (CO) see COLORADO EASTERN RAILROAD

Denver Leadville & Gunnison Railway (CO) part of DENVER SOUTH PARK & PACIFIC RAILWAY

Denver Longmont & Northwestern Railroad (CO) part of DENVER UTAH & PACIFIC RAILROAD

Denver Marshall & Boulder Railroad (CO) part of DENVER WESTERN & PACIFIC RAILWAY

Denver Railroad and Land Company (CO) see COLORADO EASTERN RAILROAD

Denver Resort Railway & Telegraph Company (CO) see DENVER CIRCLE RAILROAD

DENVER SOUTH PARK & HILL TOP RAILWAY (CO) 3' Gen 1896 1938 11 miles [G/T/Tb] {H/RM/X}

Denver South Park & Pacific Railroad (CO) part of DENVER SOUTH PARK & PACIFIC RAILWAY

DENVER SOUTH PARK & PACIFIC RAILWAY (CO) 3' Gen 1872 1942 340 miles [E/G/T] {H/RM/X}

Denver Tramway (CO) part of DENVER CONSOLIDATED TRAMWAY

Denver Tramway Extension (CO) part of DENVER CONSOLIDATED TRAMWAY

DENVER UTAH & PACIFIC RAILROAD (CO) 3' Gen 1878 1889sg 49 miles [E/G/T] {H/RM/X}

DENVER WESTERN & PACIFIC RAILWAY (CO) 3' Gen 1880 1888sg 16 miles [G/T/Tb] {X}

Depot Railway of Los Angeles (CA) part of LOS ANGELES RAILWAY

DERRY & SOUTHWESTERN RAILROAD (LA) 3’ Log 1910 1921 [Li/Tb]

Des Moines & Kansas City Railway (IA) part of DES MOINES OSCEDA & SOUTHERN RAILROAD

DES MOINES & MINNEAPOLIS RAILROAD (IA) 3' Gen 1866 1882sg 57 miles [E/G/T] {Fl/H)

Des Moines & Minnesota Railroad (IA) part of DES MOINES & MINNEAPOLIS RAILROAD

Des Moines & Northern Railroad (IA) part of ST. LOUIS DES MOINES & NORTHERN RAILWAY

Des Moines & Northwestern Railway (IA) part of DES MOINES NORTH WESTERN RAILROAD

Des Moines Adel & Western Railroad (IA) part of DES MOINES NORTH WESTERN RAILROAD

DES MOINES NORTH WESTERN RAILROAD (IA) 3' Gen 1878 1891sg 29 miles [E/G/T] {H}

Des Moines Northern & Western Railway (IA) part of DES MOINES NORTH WESTERN RAILROAD; ST. LOUIS DES MOINES & NORTHERN RAILROAD

DES MOINES OSCEDA & SOUTHERN RAILROAD (IA) 3' Gen 1879 1897sg 112 miles [E/G/T] {H}

DESCANSO ALPINE & PACIFIC RAILROAD (CA) 2’ Tour 1989 19?? [X]

DASHA LUMBER COMPANY RAILROAD (AR) 3' Log 19?? 19?? [X]

DETRICK FERTILIZER & CHEMICAL COMPANY RAILROAD (PA) 3’ Ind 1899 19?? [Po]

DETROIT BAY CITY & ALPENA RAILROAD (MI) 3'2" Gen 1878 1886sg 83 miles [E/G/T] {H}

Detroit Copper Mining Company Railroad (AZ) see CORONADO RAILROAD; CORONADO RAILWAY; MORENCI SOUTHERN RAILWAY

Detroit Yukon Mining Company Railroad (YK) see COAL CREEK RAILROAD

DEVANE (R.F.) LUMBER COMPANY RAILROAD (NC) 3’6” Log 18?? 19?? [Li]

DEWEY CEMENT COMPANY RAILROAD (OK) 3' Ind [Tb]

Dewing & Sons COMPANY RAILROAD (MI) see ALLEGAN & LAKE SHORE RAILROAD 

DEWING & SONS LUMBER COMPANY RAILROAD (WV) 3'6” Log 1888 1899 [Li]

DIAMOND & CALDOR RAILWAY (CA) 3' Gen 1902 1952 34 miles [E/G/T] {F/H/RC}

DIAMOND MATCH COMPANY RAILROAD (ID) 3' Log 1927 1943 17 miles [A/Tb]

DIAMOND MATCH COMPANY RAILROAD (WA) 3' Log [Tb] {X}

DIAMOND MATCH COMPANY'S METER GAUGE LOGGING RAILROAD (CA) meter Log 1902 1915 17 miles [E/T/Tb] {F}

DIAMOND PORTLAND CEMENT COMPANY RAILROAD (??) 3' Ind 1911 19?? [Li/Tb]

DIAMOND SALT COMPANY RAILROAD (CA) 3' Mine 1911 19?? {F}

DIAMOND VALLEY RAILROAD (PA) 3' Log 1885 1890 12 miles [E/G/Tsu] {Kn/Ta/X}

DIANA LUMBER COMPANY RAILROAD (WV) 3’ Log 1934 19?? [Li]

DIBBELL MINERAL COMPANY RAILROAD (NC) 3’ Mine 1920 19?? [Li/Tb]

Dickey & Campbell Lumber Company Railroad (NC) see MOUNT MITCHELL RAILROAD

DICKEY & WOOD LOGGING COMPANY RAILROAD (WA) 3’ Log 1929 1931 2 miles [A]

DIEHL (W.T.) LUMBER COMPANY RAILROAD (LA) 3’ Log 1905 19?? [Po]

DILLINGHAM COMPANY RAILROAD (HA) 2’ Mine 19?? 19?? [Po]

DILLON (E.) & SON COMPANY RAILROAD (VA) 3’10” Log 1905 19?? [Li/Tb]

DINORWIC QUARRIES RAILROAD (ON) 1'10¾" Mine 1932 19?? [X]

DISMAL SWAMP RAILROAD (NC/VA) 3'6" Gen 1896 1941 35 miles [G/T/Tb] {H/X}

Disney World Railroad (FL) see WALT DISNEY WORLD RAILROAD

DISNEYLAND RAILROAD (CA) 3' Tour 1955 to date 2 miles {X}

DIXIE CONSTRUCTION COMPANY RAILROAD (AL) 3’ Con 1921 19?? [Po/Tb]

DIXIE LUMBER COMPANY RAILROAD (WV) 3’ Log 1907 19?? [Li/LR]

DODGE (L.) LUMBER COMPANY RAILROAD (TN) 3’ Log 1890 19?? [Li]

DOE RUN LEAD COMPANY RAILROAD (MO) 2’ Mine 1906 19?? [Po]

DOHERTY'S MILL EXTENSION RAILROAD (WA) 3' Log [Tb]

DOLLY VARDEN MINES RAILWAY (BC) 3’ Mine {X}

DOLLYWOOD EXPRESS STEAM RAILWAY (TN) 3' Tour 19?? 19?? 5 miles [X]

DOLORES PARADOX & GRAND JUNCTION RAILROAD (CO) 3' Log 1913 1948 26 miles [K/T/Tb] {RM/X}

DOMES MINES RAILROAD (ON) 3’ Mine 1912 19?? [Po]

DOMINION COAL COMPANY RAILROAD (NS) 3’ Mine 1904 19?? [Po/Tb]

DOMINION CONSTRUCTION COMPANY RAILROAD (ON) 3’ Con 1912 19?? [Po/Tb]

DOMINION FUR & CHEMICAL COMPANY RAILROAD (MB) 2’6” Ind 1912 19?? [Po]

DOMINION IRON & STEEL COMPANY RAILROAD (NF) 2’ Ind 1901 19?? 6 miles [Tb] {L}

DOMINION IRON & STEEL COMPANY RAILROAD (NS) 3’ Ind 1901 19?? [Po/Tb]

DONALDSON LUMBER COMPANY RAILROAD (AR) 3' Log 1886 18?? 6 miles [De/LR/Tsu]

Donner & Tahoe Railroad (CA) part of BUTTE & PLUMAS RAILWAY

DONNER STEEL COMPANY RAILROAD (NY) 3’ Ind 1916 19?? [Po/Tb]

DOOLEY & MOODY CONSTRUCTION COMPANY RAILROAD (NE) 3’ Con 19?? 19?? [Po]

DORCHESTER LUMBER COMPANY RAILROAD (SC) 3' Log 1908 1935 30 miles [Li/LR/Tb] {Fe}

DORNSIFE RAILROAD (PA) 3'6" Log 1899 19?? 10 miles [Tb] {Kn/Ta}

DORSEY (A.T.) LUMBER COMPANY RAILROAD (NC) 3’ Log 1920 19?? [Li]

DOUGHERTY & SMITH MILL COMPANY RAILROAD (CA) ng Log 1869 18?? {F}

Dougherty Extension Railway (CA) see WILDWOOD BOULDER CREEK & NORTHERN RAILROAD

Dougherty Lumber Company Railroad (CA) see WILDWOOD BOULDER CREEK & NORTHERN RAILROAD

Douglas Land Company Railroad (VA) see LAUREL RAILWAY

Douglass (J.M.) & Company Railroad  (NV) see DAYTON SUTRO & CARSON VALLEY RAILROAD

DOWLER (J.A.) COMPANY RAILROAD (WV) 3’ Log 19?? 1921 [Li]

DRAKE & STRATTON COMPANY RAILROAD (MD) 3’ Con 1890 19?? [Po]

DRAKE & STRATTON COMPANY RAILROAD (MN) 3’ Con 1892 19?? [Po]

Drake & Stratton Company Railroad (MN) see BIWABIK MINE NARROW GAUGE RAILROAD; FAYAL MINE NARROW GAUGE RAILROAD; MOUNTAIN IRON MINE NARROW GAUGE RAILROAD

DRAKE & STRATTON COMPANY RAILROAD (NJ) 3’ Con 1897 19?? [Po/Tb]

DRAKE & STRATTON COMPANY RAILROAD (NY) 3’ Con 1887 19?? [Po]

DRAKE & STRATTON COMPANY RAILROAD (OH) 3’ Con 1902 19?? [Po]

DRAKE & STRATTON COMPANY RAILROAD (PA) 3’ Con 1892 19?? [Po]

DRAKE & STRATTON COMPANY RAILROAD (TN) 3’ Con 1890 18?? [Po]

DRAKE & STRATTON COMPANY RAILROAD (WI) 3’ Con 1887 19?? [Po]

DRAVO CONSTRUCTION COMPANY RAILROAD (PA) 3’ Con 1904 19?? [Po]

DRAVO CONTRACTING COMPANY RAILROAD (AL) 2’6” Con 19?? 19?? [Po]

Dravo Doyle & Company Railroad (PA) see DRAVO CONSTRUCTION COMPANY RAILROAD

DRAVOSBURG MINE RAILROAD (PA) 3’2” Mine 1882 18?? [Po]

DRY RUN LUMBER COMPANY RAILROAD (AR) 3' Log 2 miles [LR/Tb/Tsu] {De}

DUCK RIVER VALLEY NARROW GAUGE RAILROAD (TN) 3' Gen 1870 1889sg 48 miles [E/G/T] {H/ST}

DUFF (R.C.) LUMBER COMPANY RAILROAD (VA) 3’ Log 19?? 1919 [Li]

DULL & WILLIAMS COMPANY RAILROAD (PA) 4’ Ind 1869 18?? [Po]

DUNCAN (B.C.) LUMBER COMPANY RAILROAD (WV) 3’ Log 1929 19?? [Li/Tb]

Duncan (John) Lumber Company Railroad (PA) see WHITE DEER & LOGANTON RAILWAY

Duncan Lumber Company Railroad (PA) see COOK & DUNCAN LUMBER COMPANY RAILROAD

DUNCAN MILLS LAND & LUMBER COMPANY RAILROAD (CA) 3' Log 1880 1917 5 miles [A/G/Tb] {F}

DUNGANNON LUMBER COMPANY RAILROAD (VA) 3'6" Log 19?? 19?? [Cm]

DUNNELLON PHOSPHATE COMPANY RAILROAD (FL) 3’ Mine 1892 19?? [Po/Tb]

DUNSMORE MINE RAILROAD (PA) 3’ Mine 1898 19?? [Po/Tb] {Ta}

DuPont de Nemours Company Railroad (CA) see CALIFORNIA POWDER WORKS RAILROAD

DuPont de Nemours Company Railroad (IA) see IOWA POWDER MILL RAILROAD

DuPont de Nemours Company Railroad (IL) see GRASSELI POWDER COMPANY RAILROAD

DUQUESNE COAL COMPANY RAILROAD (PA) 3’ Mine 1878 18?? [Po]

DUQUESNE COAL COMPANY RAILROAD (PA) 4’1” Mine 1873 18?? [Po]

DUQUESNE CONTRACTING COMPANY RAILROAD (PA) 3’ Con 1913 19?? [Po]

DUQUESNE SLAG PRODUCTS COMPANY RAILROAD (PA) 3’ Ind 19?? 19?? [Po/Tb]

DUQUESNE STEEL WORKS NARROW GAUGE RAILROAD (PA) 3’ Ind 1890 19?? [Po]

DURANGO & SILVERTON NARROW GAUGE RAILROAD (CO) 3' Tour 1981 to date 46 miles [Tb] {D/X}

DURHAM & ROBINSON LUMBER COMPANY RAILROAD (LA) 3' Log 1910 1913 2 miles [LR/Tb]

DURHAM COAL & COKE COMPANY RAILROAD (PA) 3’ Mine 1905 19?? [Po/Tb]

DURHAM PETERS & COMPANY RAILROAD (MI) 3' Log 1881 18?? 5 miles [K/M/Tsu]

DURHAM TRANSPORTATION COMPANY (TX) 3' Log 1905 1908sg 21 miles [E/G/T] {H}

DUTCH MINE RAILROAD (CA) ng Mine {F}

DUTTON PHOSPHATE COMPANY RAILROAD (FL) 3’ Mine 1905 19?? [Po]

DWIGHT LUMBER COMPANY RAILROAD (MI) NG Log 1880 18?? [K]

Dyas Lumber Company Railroad (AL) see MCCLURE & GRANAMYER COMPANY RAILROAD

Dyer & White Company Railroad (UT) see CRESCENT TRAMWAY

DYER (JOHN T.) QUARRIES RAILROAD (PA) 3’ Mine 1905 19?? [Po/Tb]