Six Highway 520 bridge pontoons floated out of their casting basin and into Grays Harbor early Monday, taking advantage of high tide to lift the concrete structures off the basin floor. This group ...

The first of six new large pontoons has arrived in Lake Washington and is waiting to be installed on the 520 bridge. At 360 feet long, 29 feet tall, and 75 feet wide, the pontoon weighs 11,000 tons ...

Six more pontoons for the new 520 bridge will float out of their casting basin at Grays Harbor on Saturday morning, the third batch since work began there in early 2012. Four of them are the giant ...

There may have been a time when you visited the local lake and came across a boat that resembles a floating deck with a motor fixed to the back. If you are fortunate enough, you may have even perhaps ...