MADISON, Wis. -- Wisconsin police aren’t taking time off this holiday weekend.

Drivers can expect to see plenty of officers watching the roads this weekend, enforcing the state’s relatively new mandatory seatbelt law, and on the lookout for drunk drivers.

State Patrol officer Dan Lonsdorf said Labor Day weekend has been the most deadly holiday weekend in terms of drunken driving deaths. He says that on average, four people in Wisconsin die from crashes involving drunk drivers each Labor Day weekend.

"You know, people are ending the summer, it's a lot of celebration. The weather's nice yet and people make plans well in advance for Labor Day. Unfortunately, sometimes that includes some kind of party which often results in too much alcohol," Lonsdorf said.

Police often work in pairs when extra patrols are on duty, with one officer handling the radar gun and nearby officers stopping speeders and drunk drivers.

State officials said that OWI arrests typically double over the Labor Day weekend.

Police say that they’re not out there strictly to catch drunk drivers, but in the hope that the extra presence deters people from driving under the influence in the first place.

"Hopefully people are getting used to seeing us out there doing these projects and knowing that we are there," said Madison police officer Scott Beckfield. “And should they be out there, you know driving under the influence, you know, there’s a decent chance that they'll be coming across us."

Drivers could also be coming across lots of traffic headaches this Labor Day weekend.

DOT officials are unveiling some areas that travelers will want to avoid.

For example, Interstate 94 between Hwy. N and Interstate 39/90 has a stretch where traffic shifts to one side for about five miles with speed reductions to 55 miles per hour.

Motorists should be aware that some lanes will be closed on Interstate 94 south of Milwaukee and on Hwy. 41 near Oshkosh and Hwy. 53 near Rice Lake.

And officials say that although no lane restrictions or road detours are in place, congestion along Hwy. 12 is expected as travelers make their final summer trek to the Wisconsin Dells area.

Most road work around the state will end at noon on Friday and resume Tuesday at 6 a.m.

Peak travel times are expected to be from noon to 8 p.m. on Friday and Monday.