In 1891, Bellefontaine became the location of the first concrete street in America. George Bartholomew invented a process for paving using Portland cement, which until then had been used in stone construction. A small section of Main Street, on the west side of the Logan County Courthouse, was the first to be paved using that process. When that proved successful, Court Avenue, which runs along the south side of the courthouse, was paved with concrete. While Main Street is now paved with asphalt, Court Avenue has retained its original concrete pavement for more than 100 years. At its centennial, the street was closed to traffic and a statue of Bartholomew placed at its Main Street end; it became a pedestrian way. Since then one lane has been reopened for eastbound traffic.