The Ohio Dept. of Transportation has scrapped a controversial plan to close the aging I-90 Inner Belt bridge in Cleveland while fast-tracking a replacement bridge. Instead, it will use $200 million in federal stimulus money and a mix of local and federal funds to build a new span while keeping the old one operating. The Inner Belt bridge, built in 1959 and similar in design to the failed I-35W bridge in Minneapolis, is a major safety concern and is rated “poor” on the federal bridge rating system. Its condition led ODOT to ban truck traffic last year. The agency last
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.