Active slides undercutting Idaho State Highway 5 near St. Maries

Road breakup on ID 5

Shifting ground from a very wet spring has caused sections of State Highway 5 to heave and collapse.

ITD has completely shut down ID 5 between Parkside Rd. and Conklin Park Rd. A mud slide beneath the road has caused it to crack and sink. In some areas, the road is gone entirely. At this point in time, engineers fear the section of road may be a total loss.

Crews will start to do exploratory drilling Friday and into the weekend. This will help discover the extent of the slide and what repairs may be needed once shifting stops.

ITD first noticed significant damage last Monday. Initially, small 3-inch wide cracks formed on the road surface. By Tuesday those cracks were 8 inches wide and more than six feet deep. Since then the road has steadily deteriorated and continues to shift.

Motorists are advised to detour around the dangerous area. ID 3 and ID 6 are the best options. Local traffic has been using the state park road, but that is now restricted due to unstable ground. Local authorities are asking those roads be used only for local emergency traffic.

Springtime in Idaho offers different set of road maintenance challenges

Spring Road Conditions

As Idaho prepares to emerge from a historic winter that brought the most snow many areas had seen in decades, a new set of challenges face our road maintenance crews.

Hillsides saturated by snow and rain can release rockslides given the slightest provocation. Moisture coming in on the top of existing snowpack bring the threat of springtime avalanches. Suddenly higher temperatures lead to extensive melting, flood watches statewide and water-over-the-roadway concerns.

And drivers emerge from winter hibernation to return to area highways. It is as critical as ever for motorists to have access to current travel information, available at 511.idaho.gov.

Meanwhile, ITD crews will be constantly monitoring our state roads, looking for break-up, potholes, hazards, and general deterioration. The department is committed to removing or repairing any problem areas as soon as possible.

Drivers advised to watch for potholes, roadway breakup

As a winter for the ages rages on, potholes are developing in roadway surfaces across the state. Record precipitation and multiple freeze-thaw cycles are causing distress in many of the highways we all rely on for safe travel. ITD maintenance crews are maintaining roadways and fixing potholes when possible.