I-35 Unbonded Concrete Overlay in Pine County
Unbonded concrete overlay, bridge rehabilitation, ramp reconstruction
Traffic Impacts
- This project is completed and all lanes and ramps are open.
- The Kettle River Rest Area is also open.
Benefits
- Improved pavement and extended life of the interstate.
- Exiting and merging improvements at some ramps.
Project Information
- Unbonded concrete overlay on approximately 11.7 miles in each direction of I-35.
- Pedestrian ramps at Kettle River Rest Area
- Drainage repairs throughout project area.
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..