Zoo and a major expansion to the Toledo Museum of Art. The postwar job boom and Great Migration brought thousands of African Americans to Toledo to work in industrial jobs, where they had previously been denied. Due to redlining, many of them settled along Dorr Street, which, during the 1950s and 60s was lined with flourishing black-owned businesses and homes. Desegregation, a failed urban renewal project, and the construction of I-75 displaced those residents and left behind a struggling community with minimal resources, even as it also drew more established, middle-class people, white and black, out of center cities for newer housing. The city rebounded, but the slump of American manufacturing in the second half of the 20th century during industrial restructuring cost many jobs. By the 1980s, Toledo had a depressed economy. The destruction of many buildings downtown, along with several failed business ventures in housing in the core, led to a reverse city-suburb wealth problem common in small cities with land to spare. 21st century In 2018, Cleveland-Cliffs, Inc. invested $700 million into an East Toledo location as the site of a new hot-briquetted iron plant, designed to modernize the steel industry. The plant was slated to create over 1200 jobs and be completed in 2020. Several initiatives have been taken by Toledo's citizens to improve the cityscape by urban gardening and revitalizing their communities. Local artists, supported by organizations like the Arts Commission of Greater Toledo and the Ohio Arts Council, have contributed an array of murals and beautification works to replace long standing blight. Many downtown historical buildings such as the Oliver House and Standart Lofts have been renovated into restaurants, condominiums, offices and art galleries. Toledo Water Crisis Harmful blooms of cyanobacteria, or blue-green algae, were so bad in the 1960s that Lake Erie was mocked as a dead zone. However through clean water rules the lake was revived. Recently though these blooms have returned and have been negatively affecting Lake Erie since the late 1990s now. Heightened levels of blue-green algae can affect both human and ecosystem health by causing fish to die, the water to be discolored and foul smelling, and oxygen deficient dead zones may even start to form. Sometimes the blooms are so thick that they slow boats. These large blooms are caused by agricultural runoff flowing into the lake. Agricultural runoff dumps phosphorus into the western basin of Lake Erie