Wrth adeiladu’r ffordd cafodd cryn ddarpariaeth ei chreu ar gyfer teithio llesol, yn ogystal â manteision ar gyfer bioamrywiaeth. Mae cynllun goleuo pwrpasol, a gafodd ei ddylunio ar y cyd â Chyfoeth Naturiol Cymru, wedi cael ei roi ar waith, i liniaru’r effeithiau ar bathewod ac ystlumod, ac arweiniodd ymgynghori ag arbenigwr ar bysgod at ddylunio cwlfer unigryw i helpu pysgod i deithio drwy eu cynefinoedd.
Construction of the road created substantial active travel provision as well as benefits to biodiversity. A bespoke lighting scheme designed with Natural Resources Wales is in place to mitigate the impact on dormice and bats, while consultation with a fish ecology specialist led to a uniquely designed stream culvert to assist with the passage of fish through their habitats.