ALTOONA, Pa. (WTAJ) — It was a day to celebrate at the Fort Roberdeau Historic Site in Altoona as a need improvement project is complete.The Blair County Commissioner and Fort Roberdeau staff met for a ribbon-cutting ceremony. Improvements to the revolutionary fort took about 3 years to finish because of the pandemic and supply chain issues. The work mainly focused on accessibility upgrades including new handicap-accessible parking spots, sidewa…