The Tampa-Hillsborough Expressway Authority on May 25 filed a countersuit at the Hillsborough County Circuit Court in Tampa, Fla., against locally based PCL Civil Contractors Inc. PCL, which built and rebuilt reversible lanes on the Selmon Crosstown Expressway, filed suit April 1 againist the agency. It seeks $21 million that it claims it is owed and alleges breach of contract. In the countersuit, the authority contends that PCL owes a refund of $6 million. According to Authority General Counsel Patrick Maguire, five items were paid either as a result of fraud, misrepresentation or deliberate overbilling.
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.