
This project involved concrete resurfacing of approximately 2 miles of existing composite pavement with a 6 inch unbonded concrete overlay. It was part of a two year plan to improve Coolidge Highway in the City of Oak Park. Last year, the intersection of 9 Mile and Coolidge was reconstructed and decorative concrete and street elements were added. The city received a special grant for the entire project and was able to maximize the amount of work done by including a cost effective concrete overlay. This year’s project included some water main replacement and full depth concrete and driveway replacement.
In order to construct the overlay, the existing asphalt surface was milled down to the old concrete pavement and then repairs where made to the old pavement below. Once the repairs were done, a one inch separator layer was added. The six inch concrete overlay was then placed including integral curb and gutter. The finished pavement features a turf drag surface texture and the transverse joints have been left unsealed. This provides for a very smooth and quiet riding pavement.
A similar project was completed on Coolidge in the City of Royal Oak over 20 years ago and is still in service today! For Oak Park, this six inch concrete overlay should provide them with a long term fix.