Spancrete Precast plays key role in WisDOT project
As part of I-94 North-South Freeway Reconstruction Project, the Wisconsin Department of Transportation (WisDOT) replaced the Rawson Avenue
bridge in Oak Creek in mid-June. Spancrete products were used to construct the bridge, which was put into place using a technology brand new
to the state—a self-propelled modular transporter, or SPMT.
Two superstructure segments were assembled on temporary shoring
towers about 800 feet from their fnal positions in the completed
structure. The segments were 138-ft. 2-in. wide; one span was 98-ft.
10 1/2-in. long while the other was 86-ft. 10 1/2-in. long.
In a process that lasted two hours, the SPMT's massive platforms
were positioned underneath the Spancrete Brand precast concrete
girders, lifted the roughly 3 million-pound decks and carried them
into position over north-south bound traffc lanes, and lowered the
pieces until the Spancrete Brand precast pier caps were properly
positioned on the bridge's structural supports.
The right of way on the east and west sides of I-94 needed only minor grading to accommodate the SPMT equipment. The right of way also
provided ample room to keep the segment construction operations at a
safe distance away from the active traffc. This enhanced the safety of
the construction workers as well as that of the traveling public. Furthermore, this construction method allowed crews to build and install the
bridge in about one month's time, versus the normal four to six months
a project like this would traditionally take.
Rawson Avenue was opened to traffc at the start of summer.