Workers from Allison Park Contractors of Gibsonia pour concrete Thursday for the first of eight side-by-side foundation blocks for the labyrinth spillway at the Altoona Water Authority’s ...

The improvements to the dam, built in 1902 by the Pennsylvania Railroad, renovated in 1946 and acquired by the city in 1981, will include a new zig-zag or “labyrinth weir” spillway ...