Aitkin County
We're excited to share that the detour through McGregor has been removed.
Motorists may encounter minimal lane or shoulder closures as crews complete any remaining work. Watch for workers and equipment, and be prepared to stop or slow down.
Access is always open and maintained to those who live, work or visit those along the work zone; however, expect changes.
Hard closures were necessary to replace drainage structures beneath Hwy 169.
a. Pipe west of Co. Rd. 12/83
b. Pipe east of Co. Rd. 12/83
c. Box bridge between Co. Rd. 12/83 and 390th St.
d. Pipe between 390th St. and 365th St.
e. Box bridge north of 370th Ln.
f. Pipe north of 370th Ln.
g. Box bridge south of Co. Rd. 54/56
h. Box bridge south of Co. Rd. 54/56
i. Pipe between 395th St. and Rice River
The project required segments of road closures with detours along with shoulder or lane closures with flaggers. .
Information is tentative and subject to change. Detours will overlap at times.
| Segment | Construct | Impacts |
|---|---|---|
| Aitkin to Hassman | Late April to late October | Complete |
| Aitkin | Mid-May to mid-July | Complete |
| Hassman intersection closes | Early September to early October | Complete |
MnDOT reconstructed the road and widened shoulders from the Ripple River in Aitkin to the Mississippi River north of Hassman, Aitkin County.
The Hwy 169 project will use an unbonded concrete overlay to repair and strengthen the road surface. The process consists of three layers.
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
Seven to ten inches of new concrete is poured over the interlayer
Informational graphic of an unbonded concrete overlay. Select image to enlarge
