Law No. 9.061 providing for the use of eco-friendly asphalt and bio-asphalt in resurfacing, rehabilitation and asphalt paving works on public roads and motorways in the state of Piauí.

This Law aims to promote the use of eco-friendly asphalt (rubber asphalt) and bio-asphalt (green asphalt) in road resurfacing, rehabilitation and paving projects on public roads and highways in the State of Piauí. The law gives priority to sustainable paving materials produced from recycled tyres and biomass-derived inputs, seeking to integrate infrastructure development with environmental protection. Its objectives include reducing waste, encouraging the recycling of discarded tyres and other materials, and fostering the adoption of cleaner technologies in the construction and transportation sectors. The law also seeks to support sustainable economic development by encouraging research, technological innovation and the use of environmentally responsible production methods. It establishes guidelines for improving environmental quality, protecting public health, reducing and reusing solid waste, and strengthening the recycling industry through greater demand for recycled raw materials. In addition, the legislation requires public authorities to prioritise eco-friendly asphalt and bio-asphalt in procurement and public works processes whenever feasible, thereby promoting circular-economy practices and reducing the environmental impacts associated with conventional road construction materials.