Merrill Bridge, Spanning Milk River at Snake Creek-Merrill Road, Harle...
Survey number: HAER MT-123 Building/structure dates: 1913 Initial Construction
Ten Mile Creek Bridge, Spanning Ten Mile Creek at Williams Street, Hel...
Survey number: HAER MT-127 Building/structure dates: 1894-1895 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Childs Powerhouse,...
Survey number: HAER AZ-65-EE Building/structure dates: 1908-1909 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Childs Powerhouse,...
Survey number: HAER AZ-65-EE Building/structure dates: 1908-1909 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Intake System, For...
Survey number: HAER AZ-65-B Building/structure dates: 1915 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Intake System, For...
Survey number: HAER AZ-65-B Building/structure dates: 1915 Initial Construction
Rosebud Creek Bridge, Spanning Rosebud Creek at Secondary Highway 446,...
Survey number: HAER MT-118 Building/structure dates: 1929 Initial Construction
Silver Bridge, Spanning Bitterroot River at U.S. Highway 93, Hamilton,...
Survey number: HAER MT-129 Building/structure dates: 1940 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Irving Powerhouse,...
Survey number: HAER AZ-65-G Building/structure dates: 1915-1916 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Flume Tunnel No. 1...
Survey number: HAER AZ-65-C Building/structure dates: 1915 Initial Construction
Merrill Bridge, Spanning Milk River at Snake Creek-Merrill Road, Harle...
Survey number: HAER MT-123 Building/structure dates: 1913 Initial Construction
Scenic Bridge, Spanning Clark Fork at Old Highway 10, Tarkio, Mineral ...
Unprocessed Field note material exists for this structure: N989 Survey number: HAER MT-122 Building/structure dates: 1927-1928 Initial Construction Building/structure dates: 1951 Subsequent Work Building/st... More
Ten Mile Creek Bridge, Spanning Ten Mile Creek at Williams Street, Hel...
Survey number: HAER MT-127 Building/structure dates: 1894-1895 Initial Construction
Ten Mile Creek Bridge, Spanning Ten Mile Creek at Williams Street, Hel...
Survey number: HAER MT-127 Building/structure dates: 1894-1895 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Childs Powerhouse,...
Survey number: HAER AZ-65-EE Building/structure dates: 1908-1909 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Irving Powerhouse,...
Survey number: HAER AZ-65-G Building/structure dates: 1915-1916 Initial Construction
Fort Huachuca, Cavalry Stable, Clarkson Road, Sierra Vista, Cochise Co...
Survey number: HABS AZ-210-F National Register of Historic Places NRIS Number: 74000443
Fort Huachuca, Cavalry Stable, Clarkson Road, Sierra Vista, Cochise Co...
Survey number: HABS AZ-210-B Building/structure dates: 1916 Initial Construction Building/structure dates: 1951-1955 Subsequent Work National Register of Historic Places NRIS Number: 74000443
Childs-Irving Hydroelectric Project, Childs System, Sally May-Purple M...
Survey number: HAER AZ-65-N Building/structure dates: 1908 Initial Construction Building/structure dates: 1920 Subsequent Work
Southern Pacific Railroad Water Settling Reservoir, Yuma Crossing, sou...
Significance: The railroad, reaching Arizona Territory form California in 1877, was the first railroad to arrive in Arizona and the second to be built eastward from the West, connecting with the Texas Pacific e... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Belt Creek Bridge, Spanning Belt Creek at Belt Street, Belt, Cascade C...
Survey number: HAER MT-124 Building/structure dates: 1923 Initial Construction Building/structure dates: 1954 Subsequent Work
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Tongue River Bridge, Spanning Tongue River at Main Street, Miles City,...
Survey number: HAER MT-119 Building/structure dates: 1934 Initial Construction
Silver Bridge, Spanning Bitterroot River at U.S. Highway 93, Hamilton,...
Survey number: HAER MT-129 Building/structure dates: 1940 Initial Construction
Fort Huachuca, Cavalry Stable, Clarkson Road, Sierra Vista, Cochise Co...
Survey number: HABS AZ-210-F National Register of Historic Places NRIS Number: 74000443
Childs-Irving Hydroelectric Project, Irving System, Storehouse & Cotta...
Survey number: HAER AZ-65-H Building/structure dates: 1915 Initial Construction
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Merrill Bridge, Spanning Milk River at Snake Creek-Merrill Road, Harle...
Survey number: HAER MT-123 Building/structure dates: 1913 Initial Construction
Scenic Bridge, Spanning Clark Fork at Old Highway 10, Tarkio, Mineral ...
Unprocessed Field note material exists for this structure: N989 Survey number: HAER MT-122 Building/structure dates: 1927-1928 Initial Construction Building/structure dates: 1951 Subsequent Work Building/st... More
Belt Creek Bridge, Spanning Belt Creek at Belt Street, Belt, Cascade C...
Survey number: HAER MT-124 Building/structure dates: 1923 Initial Construction Building/structure dates: 1954 Subsequent Work
Childs-Irving Hydroelectric Project, Childs System, Childs Powerhouse,...
Survey number: HAER AZ-65-EE Building/structure dates: 1908-1909 Initial Construction
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Rosebud Creek Bridge, Spanning Rosebud Creek at Secondary Highway 446,...
Survey number: HAER MT-118 Building/structure dates: 1929 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Irving Powerhouse,...
Survey number: HAER AZ-65-G Building/structure dates: 1915-1916 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Flume Tunnel No. 2...
Survey number: HAER AZ-65-L Building/structure dates: 1908 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Stand Pipe (Surge ...
Survey number: HAER AZ-65-CC Building/structure dates: 1908 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Flume Tunnel No. 5...
Survey number: HAER AZ-65-W Building/structure dates: 1908 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Storehouse & Cotta...
Survey number: HAER AZ-65-H Building/structure dates: 1915 Initial Construction
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Merrill Bridge, Spanning Milk River at Snake Creek-Merrill Road, Harle...
Survey number: HAER MT-123 Building/structure dates: 1913 Initial Construction
Scenic Bridge, Spanning Clark Fork at Old Highway 10, Tarkio, Mineral ...
Unprocessed Field note material exists for this structure: N989 Survey number: HAER MT-122 Building/structure dates: 1927-1928 Initial Construction Building/structure dates: 1951 Subsequent Work Building/st... More
Belt Creek Bridge, Spanning Belt Creek at Belt Street, Belt, Cascade C...
Survey number: HAER MT-124 Building/structure dates: 1923 Initial Construction Building/structure dates: 1954 Subsequent Work
Belt Creek Bridge, Spanning Belt Creek at Belt Street, Belt, Cascade C...
Survey number: HAER MT-124 Building/structure dates: 1923 Initial Construction Building/structure dates: 1954 Subsequent Work
Ten Mile Creek Bridge, Spanning Ten Mile Creek at Williams Street, Hel...
Survey number: HAER MT-127 Building/structure dates: 1894-1895 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Childs Powerhouse,...
Survey number: HAER AZ-65-EE Building/structure dates: 1908-1909 Initial Construction
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Childs-Irving Hydroelectric Project, Irving System, Irving Powerhouse,...
Survey number: HAER AZ-65-G Building/structure dates: 1915-1916 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Sally May-Purple M...
Survey number: HAER AZ-65-R Building/structure dates: 1908 Initial Construction Building/structure dates: 1920 Subsequent Work
Childs-Irving Hydroelectric Project, Childs System, Concrete Flume, Fo...
Survey number: HAER AZ-65-J Building/structure dates: 1908 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Penstock Pipe, For...
Survey number: HAER AZ-65-DD Building/structure dates: 1908 Initial Construction
Merrill Bridge, Spanning Milk River at Snake Creek-Merrill Road, Harle...
Survey number: HAER MT-123 Building/structure dates: 1913 Initial Construction
Merrill Bridge, Spanning Milk River at Snake Creek-Merrill Road, Harle...
Survey number: HAER MT-123 Building/structure dates: 1913 Initial Construction
Scenic Bridge, Spanning Clark Fork at Old Highway 10, Tarkio, Mineral ...
Unprocessed Field note material exists for this structure: N989 Survey number: HAER MT-122 Building/structure dates: 1927-1928 Initial Construction Building/structure dates: 1951 Subsequent Work Building/st... More
Scenic Bridge, Spanning Clark Fork at Old Highway 10, Tarkio, Mineral ...
Unprocessed Field note material exists for this structure: N989 Survey number: HAER MT-122 Building/structure dates: 1927-1928 Initial Construction Building/structure dates: 1951 Subsequent Work Building/st... More
Childs-Irving Hydroelectric Project, Irving System, Sandbox & Spill Ga...
Survey number: HAER AZ-65-E Building/structure dates: 1915 Initial Construction
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Silver Bridge, Spanning Bitterroot River at U.S. Highway 93, Hamilton,...
Survey number: HAER MT-129 Building/structure dates: 1940 Initial Construction
Fort Huachuca, Cavalry Stable, Clarkson Road, Sierra Vista, Cochise Co...
Survey number: HABS AZ-210-F National Register of Historic Places NRIS Number: 74000443
Childs-Irving Hydroelectric Project, Childs System, Flume Intake & For...
Survey number: HAER AZ-65-I Building/structure dates: 1908 Initial Construction Building/structure dates: 1916 Subsequent Work
Childs-Irving Hydroelectric Project, Childs System, Reinforced Concret...
Survey number: HAER AZ-65-BB Building/structure dates: 1908 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Office, Forest Ser...
Survey number: HAER AZ-65-FF Building/structure dates: 1908 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Inverted Siphon, F...
Survey number: HAER AZ-65-D Building/structure dates: 1915 Initial Construction
Southern Pacific Railroad Water Settling Reservoir, Yuma Crossing, sou...
Significance: The railroad, reaching Arizona Territory form California in 1877, was the first railroad to arrive in Arizona and the second to be built eastward from the West, connecting with the Texas Pacific e... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Scenic Bridge, Spanning Clark Fork at Old Highway 10, Tarkio, Mineral ...
Unprocessed Field note material exists for this structure: N989 Survey number: HAER MT-122 Building/structure dates: 1927-1928 Initial Construction Building/structure dates: 1951 Subsequent Work Building/st... More
Childs-Irving Hydroelectric Project, Irving System, Sandbox & Spill Ga...
Survey number: HAER AZ-65-E Building/structure dates: 1915 Initial Construction
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Belt Creek Bridge, Spanning Belt Creek on Highway 288, Waltham, Choute...
Survey number: HAER MT-125 Building/structure dates: 1936 Initial Construction Building/structure dates: after. 1985- before. 1990 Subsequent Work
Rosebud Creek Bridge, Spanning Rosebud Creek at Secondary Highway 446,...
Survey number: HAER MT-118 Building/structure dates: 1929 Initial Construction
Tongue River Bridge, Spanning Tongue River at Main Street, Miles City,...
Survey number: HAER MT-119 Building/structure dates: 1934 Initial Construction
Tongue River Bridge, Spanning Tongue River at Main Street, Miles City,...
Survey number: HAER MT-119 Building/structure dates: 1934 Initial Construction
Silver Bridge, Spanning Bitterroot River at U.S. Highway 93, Hamilton,...
Survey number: HAER MT-129 Building/structure dates: 1940 Initial Construction
Fort Huachuca, Cavalry Stable, Clarkson Road, Sierra Vista, Cochise Co...
Survey number: HABS AZ-210-F National Register of Historic Places NRIS Number: 74000443
Childs-Irving Hydroelectric Project, Childs System, Stehr Lake & Dams,...
Survey number: HAER AZ-65-Y Building/structure dates: 1908 Initial Construction
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Merrill Bridge, Spanning Milk River at Snake Creek-Merrill Road, Harle...
Survey number: HAER MT-123 Building/structure dates: 1913 Initial Construction
Belt Creek Bridge, Spanning Belt Creek at Belt Street, Belt, Cascade C...
Survey number: HAER MT-124 Building/structure dates: 1923 Initial Construction Building/structure dates: 1954 Subsequent Work
Belt Creek Bridge, Spanning Belt Creek at Belt Street, Belt, Cascade C...
Survey number: HAER MT-124 Building/structure dates: 1923 Initial Construction Building/structure dates: 1954 Subsequent Work
Childs-Irving Hydroelectric Project, Childs System, Childs Powerhouse,...
Survey number: HAER AZ-65-EE Building/structure dates: 1908-1909 Initial Construction
Rosebud Creek Bridge, Spanning Rosebud Creek at Secondary Highway 446,...
Survey number: HAER MT-118 Building/structure dates: 1929 Initial Construction
Rosebud Creek Bridge, Spanning Rosebud Creek at Secondary Highway 446,...
Survey number: HAER MT-118 Building/structure dates: 1929 Initial Construction
Silver Bridge, Spanning Bitterroot River at U.S. Highway 93, Hamilton,...
Survey number: HAER MT-129 Building/structure dates: 1940 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Irving Powerhouse,...
Survey number: HAER AZ-65-G Building/structure dates: 1915-1916 Initial Construction
Childs-Irving Hydroelectric Project, Forest Service Road 708/502, Camp...
Significance: The Childs-Irving Hydroelectric Project encompasses a unique water-pressure/electric-turbine system according to engineering historians evaluating the historic complex since 1976 that 1) was const... More
Childs-Irving Hydroelectric Project, Childs System, Flume Bridge No. 4...
Survey number: HAER AZ-65-Q Building/structure dates: 1908 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Flume Tunnel No. 3...
Unprocessed Field note material exists for this structure: N1036 Survey number: HAER AZ-65-T Building/structure dates: 1908 Initial Construction
Southern Pacific Railroad Water Settling Reservoir, Yuma Crossing, sou...
Significance: The railroad, reaching Arizona Territory form California in 1877, was the first railroad to arrive in Arizona and the second to be built eastward from the West, connecting with the Texas Pacific e... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Merrill Bridge, Spanning Milk River at Snake Creek-Merrill Road, Harle...
Survey number: HAER MT-123 Building/structure dates: 1913 Initial Construction
Yuma Crossing, Riverfront Area, between Prison Hill & Fourth Avenue, Y...
Unprocessed Field note material exists for this structure: N1018 Survey number: HAER AZ-63 Building/structure dates: 1877 Initial Construction Building/structure dates: 1884 Demolished Building/structure da... More
Rosebud Creek Bridge, Spanning Rosebud Creek at Secondary Highway 446,...
Survey number: HAER MT-118 Building/structure dates: 1929 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Sally May-Purple M...
Survey number: HAER AZ-65-M Building/structure dates: 1908 Initial Construction
Childs-Irving Hydroelectric Project, Irving System, Irving Powerhouse,...
Survey number: HAER AZ-65-G Building/structure dates: 1915-1916 Initial Construction
Childs-Irving Hydroelectric Project, Childs System, Flume Bridge No. 3...
Survey number: HAER AZ-65-P Building/structure dates: 1908 Initial Construction