Gov. Walker signs 70 mph speed limit bill

MADISON - Gov. Scott Walker has signed a bill that allows state transportation officials to raise the speed limit to 70 mph on some Wisconsin roads

Walker signed the measure Wednesday. It passed the Senate and Assembly on voice votes earlier this year.

Under the law, the Department of Transportation can raise the speed limit to 70 mph only on four-lane roads that have entrance and exit ramps. They can't raise the limit on roads with at-grade access.