A 28-year-old Saint Robert man was seriously injured after being struck by a pickup as he was walking in the roadway on Highway T, just north of Rosette Road, a mile and half north of Waynesville at 8:30 last night. Nafis K. Lymon was transported to Phelps Health. The driver of the pickup, 19-year-old Sean P. Cartwright of Waynesville, was uninjured.