I-35 Unbonded Concrete Overlay

Pine County

I-35 South of Duluth Home | Unbonded Concrete Overlay in Pine County Home | Accessibility and ADA | Contacts |

I-35 Unbonded Concrete Overlay in Pine County


Unbonded concrete overlay, bridge rehabilitation, ramp reconstruction






Traffic Impacts




Project Information



image showing unbonded concrete overlay
MnDOT District 1 recently completed two other major projects on I-35 using unbonded concrete overlay. Unbonded concrete overlay is roadway resurfacing process in which a new layer of concrete is poured over an existing layer of pavement with an interlayer between them to break the bond between the two layers. The interlayer allows the layers to expand and contract independently of each other. By allowing the layers to move freely the new concrete surface is less prone to cracking and pavement deterioration..