More than two-thirds of the states lack adequate ways to measure whether their transportation spending is successful, says a new report from two policy research groups. ENR file photo Pass or fail? States can't tell if transportation work achieves goals, report says. Related Links: View executive summary of Pew-Rockefeller report The states can't tell if the spending achieves economic, mobility, environmental, infrastructure quality and other goals, says the report. The assessment is part of a study released on May 10 by the Pew Center on the States and the Rockefeller Foundation. It found that only 13 states have sufficient goals,
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.