Once a road has deteriorated to a point where preventative maintenance is no longer a viable option, then other corrective actions become necessary. Each road is different. Roads have different traffic loadings, different soil conditions, different existing materials in the pavement structure, and different drainage characteristics. By analyzing the existing road conditions, we determine whether to improve, replace or construct pavement structures underneath the roadway surface on a case by case basis. The worst case scenario for corrective actions involves total reconstruction. The time, equipment and material costs associated with total reconstruction are many times greater than preventive maintenance. That is why preventive maintenance is so important. To view a list of County Roads to receive major maintenance this year, Click Here.
Road and Bridge is dedicated to maintaining the County’s roadway infrastructure using the most appropriate engineering solution in a cost effective manner. In keeping with that duty, we also aim to provide major maintenance to as many roadways as resources will allow. Road and Bridge is continually searching for construction and material opportunities that will increase production while still providing the most appropriate solution and a high quality product.
One road that was recently rehabilitated utilizing innovative construction means and methods was CR 424, from CR 414 to CR 425. Two different methods were used to stabilize and strengthen the existing material. Section 1) CR 424, from CR 414 to approximately 1 mile South of CR 425, was rehabilitated utilizing a process that injected hot asphalt cement that was turned into a foam and injected into the existing material to stabilize and strengthen the base material (foundation), and section 2) used a specialty emulsified asphalt to blend in the existing material to also stabilize and strengthen the base.
The rehabilitation of Section 1 (pictures below) was a joint collaboration that included Williamson County Road and Bridge and two equipment providers, Cooper Equipment and the Wirtgen Group. These companies supplied technical expertise, equipment, and operators at no expense to Williamson County. If you would like to learn more about this project, please Click Here for the pavement design proposal (of the designs that were proposed, Option 1 was selected).