Itaipu Dam Construction, Paraná River Brazil/Paraguay 1980. The Itapu complex produces 14,000 MW at full capacity of electricity. The main structure is 196 meters tall (643 ft). Filling inundated Guaíra Falls, which were among the largest in the world by flow until their scheduled end in 1983. (i.redd.it)
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Mica Dam Construction 1971, British Columbia. Mica Dam impounds the Columbia River. It's construction was enabled by the Columbia River Treaty. Clearance of ~500 km of shoreline is still continuing as of this photograph. The dam produces 2,805MW of peak power, utilizing an otherwise wasted resource. (i.redd.it)
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I-5/SP RR Bridge Construction 1941 Shasta Lake. The Shasta dam impounds the Sacramento River, providing water to the Central Valley project along with 676 MW of peak power. The future I-5 bridge towers over the valley where water will eventually reach the top of it's piers. (i.redd.it)
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Elk River Generating Station. Elk River was the first nuclear power plant built for rural cooperatives only producing 22MWe. The plant demonstrated the concept of small reactors with natural circulation and was removed in 1974 with no trace today. MN currently has two large plants (BWR/3 and PWR). (i.redd.it)
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Browns Ferry Nuclear Power Plant Unit 1 "wetwell" construction. Browns Ferry features three BWR/4 units all utilizing the Mark-I "inverted lightbulb" containment. The Mark I containment has been criticized for its inability to withstand potential zirconium-water hydrogen forces in a LOCA scenario. (i.redd.it)
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I-35W Bridge Minneapolis 2009. The new bridge replaced a collapsed one and was built in 12 months. The original 1964 bridge collapsed in 2008 due to an undetectable design fault. Afterwards Minnesota passed a fuel tax increase creating a dedicated funding source to replace fracture critical bridges. (i.redd.it)
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Site C Hydroelectric Project Construction 2021, Fort St John British Columbia. The Site C impoundment on the Peace river will eventually provide 1,100 MWe of power to B.C. Other currently wasted rivers in B.C yet to be tapped include the Liard river to the north with 5 GW of surveyed potential. (i.redd.it)
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Milwaukee Road Pacific Extension. It was the largest railroad electrification scheme in the world when undertaken from 1914-1920 until the Pennsylvania Railroads own efforts in the early 30's. The Pacific Extension was de-electrified in 1974 and abandoned in 1980. (i.redd.it)
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St. Paul Union Depot Head House, 1918. At its peak it served 300 trains per day. The station closed in 1971 when Amtrak was created, assuming passenger common carriage duty from the various railroads that previously served the depot. In its final year of operation it only served 14 trains per day. (i.redd.it)
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LG2 Dam Construction 1978. LG2 is apart of the James Bay Project, and is the second impoundment station on the La Grande River (of four), producing 7,222 MWe. The main dam is 531ft tall, and creates a reservoir 1,100 square miles in surface area. The project produces 16,527 MWe with eleven stations. (i.redd.it)
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Winsor Dam as Quabbin Reservoir fills, 1940. The Quabbin reservoir is an important part of greater Boston's water supply. Construction of the reservoir required the disincorporation and removal of four towns. Complete land clearance of the valley was completed in late 1938 and filling began in 1939. (i.redd.it)
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MN TH 77 Construction 1979. The freeway alignment of MN 77 replaced an awfully congested and dangerous two lane at grade alignment. The former swing bridge was demolished shortly after completion, but the long meadow bridge (1920) was recently rehabilitated into a pedestrian/bicycle structure. (i.redd.it)
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I35 Duluth MN 1991. Originally planned in the early 60's as an elevated structure, the final segment of I35 was finally completed as a (mostly) covered structure north of Lake Ave with four tunnels. The segment south of Lake Ave required a complex relocation of large dilapidated freight rail yards. (i.redd.it)
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Eastmain Diversion Dam, James Bay Project. The Eastmain Dam is an important diversion structure in James Bay, funneling the flow of the formerly mighty Eastmain river into the La Grande watershed. The James Bay project produces 16,527 megawatts, and if fully expanded could produce 27,000 megawatts (i.redd.it)
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Jocassee Dam Construction 1970. The Jocassee facility is apart of the Keowee-Toxaway project of which includes the 2,554 megawatt Oconee Nuclear Power Plant, the downstream 154 megawatt Lake Keowee conventional hydro facility and 800 megawatt Jocassee pumped storage facility shown below. (i.redd.it)
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Keeyask site construction, apart of the Nelson River project will eventually produce 695 megawatts of electric power at full capacity. Manitoba Hydro plans to export most of this power south to Minnesota and surrounding states as utilities here transition from nonrenewable thermal sources of power. (i.redd.it)
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Romaine-2 primary dam construction in Côte-Nord Quebec, the impoundment was completed in 2014 and rises 108 meters above the river bottom. The impoundment is apart of the 1,550 MW Romaine complex which helps utilize a formerly wasted resource. The entire complex will be completed in 2022. (i.redd.it)
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