Firms will build planned 30,000-seat ballpark on the Las Vegas Strip for  Major League Baseball's Athletics, which is relocating from Oakland, Calif.

Nearly 20 years after beginning construction and $1.23 billion later, the U.S. Army Corps of Engineers' Charleroi Lock and Dam in Monessen, Pa., is scheduled to be completed later this year. 

Construction and transportation officials say implementing the new requirements could pose problems.

High-voltage direct current undersea cable and added infrastructure will link the two countries' electrical grids, enabling a bidirectional power flow between Africa and Europe for the first time.

Report by transportation trade group ARTBA says the number of deficient bridges declined by 560, or 1.3%, over the past year.

The $1.2B Hayes Point mixed-use project had broken ground last year.

Proposed EPA mandate's reliance on hydrogen and carbon capture evoked concern in comments sent by an Aug. 9 deadline, but supporters say investment in clean transition approaches already are well underway. 

U.S. General Services Administration announces Custom House project as a "showcase" for sustainable retrofits.