Many of the visitors consisted of families with young children, who enjoyed playing on the bouncy castle, taking turns climbing on machinery, and having their pictures taken posing with cardboard cutouts of diggers and trucks.
There were also food stalls, helicopter flights and rides on a Coastguard vessel.
"It's been a really nice atmosphere," Mr Troughton said. "People have really enjoyed it and we're pleased they could come out and feel, touch and kick the bridge to get a real appreciation for what we are doing here. The feedback has been positive."
Visiting the site were Oropi's Scott and Tracey Dumbleton with their children Gia, 5, and Evie, 2.
"We just came down to enjoy the day and see the progress of what's going on," Mr Dumbleton said. "It's a nice family day out. I work in the area so it's good to see how it's going."
Mr Dumbleton said the site was "looking great".