The project will require shoulder and lane closures with flaggers each year, and segments of road closures with detours in 2023 and 2024. Access will be open and maintained to those who live, work or visit those along the highway, however expect changes.
Hassman to the Mississippi River
Reconstruct and close Hwy 169 between Hwy 210 in Hassman and the Mississippi River, south of Co. Rd. 21 (Great River Rd.). Scheduled for July–November
Reconstruct and close Hwy 169/210 between the Ripple River bridge and Aitkin Co. Rd. 12.
Detour in Aitkin:Hwy 169 (Minnesota Ave.), Hwy 47 (Fourth St. SE), Co. Rd. 12 (400th Ave.)
Information is tentative and subject to change
About this project
MnDOT will reconstruct the road and widen shoulders from the Ripple River in Aitkin to the Mississippi River north of Hassman, Aitkin County
Summary of work
Reconstruct 11 miles of road surface with a stronger, concrete overlay material
Widen the shoulders (eight feet paved and two feet gravel), lengthen turn lanes
and improve road access
Repair or replace drainage infrastructure
The Hwy 169 project will use an unbonded concrete overlay to repair and strengthen the road surface. The process consists of three layers.
Existing concrete layer
First, cracks and other imperfections are patched before the interlayer is placed over the existing surface
The interlayer serves as a bond breaker to prevent cracks on the existing concrete layer from transferring to the new concrete layer. This is called “reflective cracking”. Specially-designed fabric or up to an inch of asphalt may be used for this layer
New concrete layer
Seven to ten inches of new concrete is poured over the interlayer
Informational graphic of an unbonded concrete overlay. Select image to enlarge