He says it took a two-person crew six hours to remove the markings and while removal was taking place another two-person crew followed behind to clean the pavement.
“They were blowing the scraped and sanded markings clean with a backpack blower and then picking the debris up with a shop vacuum,” Swendrowski says. “A lot came off in larger pieces and we could just pick them up and throw them in the trash.”
Keeping Traffic Flowing
Swendrowski says Advanced Pavement Marking did some research and determined that there is less roundabout traffic in the middle of the week, so they decided to do the job on a Wednesday. He says they decided to keep the roundabout running throughout the job, which meant slowing traffic but not rerouting it to another exit.
“It was just off the highway so we really couldn’t shut it down completely,” Swendrowski says. “Our goal was to do all the work in one day while keeping the roundabout open and traffic delays to a minimum.”
Advanced Pavement Marking started the work with a five-person crew (two two-person teams and one floater) on the job early in the morning to organize traffic flow and lane shut downs. Marking removal began at 8:30 a.m. “By 10:00 a.m. we were able to start applying paint,” Swendrowski says. “We wrapped up and pulled the last cone at 9:00 p.m., 11 ½ hours after we started.”
He says the company planned the work in advance so that once the APM crews got on the job and began disrupting traffic drivers would see the crews working.
“We knew we would be there all day and that our project would be a major inconvenience to the daily traffic. Once we set our cones we immediately started working,” he says. “People tend to be more accepting of the traffic delays when they see a crew working inside the construction zone, which cause traffic from all directions to slow down and flow smoother.”
Advanced Pavement Marking shut down one side at a time, basically turning a two-lane roundabout into a one-lane roundabout. “That enable us to get the work done while allowing traffic through,” he says. “We closed one lane and had steady traffic flow all day but were able to do it with no backups.
“We shut everything down to one lane; we went through and completed the right lane all the way around and then flipped everything as soon as we were done, eliminating a traffic shift; we then switched and opened that lane and shut the other lane down.”
He says that because of the heavy traffic and significant amount of truck traffic the lanes were “coned off” for a much longer stretch than normal, and APM used arrow boards well in advance to make drivers aware.
“Plus on a roundabout everyone has to slow down anyway so that helped us too,” Swendrowski says. “We had over 200 cones out there so we were kind of hard to miss.”
He says that before they opened a freshly marked lane to traffic they made sure the paint was cured all the way through. “When the trucks come through they can really tear that paint up if it’s not 100% ready for traffic. We ensured each lane was completely dried and cured before opening the lane to traffic.”
He said that when it was time to switch they placed APM workers with the cones and at the front of the road. “As soon as we were ready to shift to work on the other lanes they just walked the cones over and traffic was open on the part we’d just completed. It worked perfect.”
He says that in addition to the removal and restriping of arrows APM crews created and marked a new layout in full traffic flow, “something we normally shut down for.”
Advanced Pavement Marking striped a yellow centerline around the entire island, a yellow line at the edge of island, and white markings to divide the two lanes and around entire exterior of road edge line as well. Kelly-Creswell, JCL and Titan equipment was used on the job along with MDOT-approved oil-based paint. Swendrowski says the used walk-behind equipment on the centerline and interior edge lines because the truck-mounted unit can’t maintain the proper radius to stripe it cleanly. The truck-mounted unit with a hand paint/bead gun was used for stencils throughout the job.