 That Harrison was a fine innovative designer of bridges is evidenced by the continuing successful use by modern heavy traffic on Skerton and Grosvenor Bridges , and on St Mary 's Bridge in Derby . As an architect , the editors of the Cheshire volume of the Buildings of England series describe him as " one of the most important of Cheshire 's architects " . Harrison 's first biographer , Arthur Blomfield , said he was " almost , if not quite , the first architectural genius in the kingdom " . 
