PURPOSE AND NEED Purpose. The purpose of this project is to preserve and extend the service life of the existing pavement, and to improve the ride quality for the traveling public. The Materials Recommendations (Attachment C) notes that the International Roughness Index (IRI) within the project limits ranges from 52 to 268, exhibiting poor ride quality that—if left unrehabilitated—would continue to deteriorate and require frequent and high- cost maintenance. Distressed asphalt pavement conditions such as ▇▇▇▇▇▇▇▇, block cracking, rutting, and occasional potholes were noted in the Materials Recommendations. The repair strategy to preserve the asphalt concrete pavement is to cold-plane the existing asphalt concrete mainline and shoulders to a depth of 0.25 foot, and replace with 0.1 foot Rubberized Hot Mix Asphalt Type O (RHMA-O) over 0.15 foot Gap Graded Rubberized Hot Mix Asphalt (RHMA-G). For the Portland Concrete Cement (PCC) pavement, the repair strategy is to replace failed slabs and grind the profile of the rigid pavement. In addition, curb ramps that are not compliant with the Americans with Disabilities Act (ADA) will be replaced, and culverts in poor condition will be repaired.
Appears in 2 contracts
Sources: Project Baseline Agreement, Project Baseline Agreement