The pedestrian walkway was installed in a single morning at Southwest 109th Avenue on Saturday, intended eventually to link FIU’s Modesto A. Maidique Campus to the small suburban city of Sweetwater, where the university estimates 4,000 of its students live.
Before Saturday’s installation, FIU said the pedestrian bridge used an innovative approach under which a 175-foot section of the overall 320-foot long bridge was fabricated by the side of the Trail while support columns were erected in place.
Over a few hours on Saturday morning, the 950-ton span was lifted off the ground by a mechanical transporter, swung into position across the Trail, then lowered into place over the support columns.
That reduced to a minimum the time the trail had to be closed to traffic, and minimized risks to workers and people in the vicinity, FIU said.
The university’s engineering school has an “accelerated bridge” program that develops techniques to speed up bridge construction. The program consulted with builders, designers and engineers early in the process, but was not closely involved in the pedestrian bridge program, a spokeswoman said last week.
There were as yet no stairs or ramps to the bridge, which was not open. Opening was scheduled for early next year.