The City of Renton has officially postponed the grand-opening celebration for the new Riverview Park Bridge due to a delay from one of the contractors.

Originally scheduled for Sept. 18, the event has yet to be re-scheduled.

According to Parks Planning and Natural Resources Director Leslie Betlach, the 135-foot bridge, to be constructed from aluminum, is “a complicated project” that is taking a little longer than expected for fabricators to complete.

The old bridge, which was supported by piles sunk into the river, as well as concrete abutments, made it vulnerable to debris that routinely comes down the river during high-water flood and seasonal melting events.

The new bridge is a single metal span with a grated surface to allow for better sunlight penetration to the water below.

“There’s nothing pre-fab about it,” Betlach said.

City spokesperson Preeti Shridhar said the new bridge is now expected to be completed in early October and the city would re-schedule the opening celebration when it is finished.