With each passing day, the M-5/Pontiac Trail/Martin Parkway roundabout in Commerce Township inches closer to becoming the largest modern roundabout in Oakland County.
Crews have already paved two-thirds of the circular roadway. This week, they plan to pour the concrete on the southeast quadrant where a temporary road was built.
“At that time we will be shifting traffic onto the actual roundabout to pave the temporary road,” said Road Commission for Oakland County (RCOC) spokesperson Craig Bryson.
The temporary road will become a slip lane that functions in the same capacity as the makeshift road in place.
“This allows motorists traveling northbound and turning right to cut the corner short and not go through the roundabout, just like the temporary road does now,” Bryson said.
Though the majority of roundabout paving is completed, ancillary work must still be finished.
“We still have the curbs, storm water sewers and connecting all the legs of the roundabout left to do,” Bryson said.
However, Bryson added that they are still on schedule. Work is expected to be completed around Nov. 1.
The $5 million project was conceived to help mitigate traffic congestion at the intersection of M-5, Pontiac Trail, and Martin Parkway. Once finished, most of the roundabout will be two lanes, with three lanes at the north end.
Pontiac Trail east of M-5 will remain open, and traffic will be permitted to travel from northbound M-5 to eastbound Pontiac Trail and from westbound Pontiac Trail to southbound M-5, but traffic will be reduced to one lane in each direction.
A closure is in place along Pontiac Trail between M-5 and Welch Road.
The detour route is Welch Road to Maple Road to Haggerty Road and back to Pontiac Trail, and vice versa.