NORMAN, Okla. (KFOR) — The northbound lanes of I-35 near W Tecumseh Road have been closed on Thursday afternoon due to an overturned semi. Overturned semi along I-35 near W Tecumseh Road. Photo courtesy KFOR. According to the Oklahoma Highway Patrol, the semi overturned at I-35 southbound and N Flood Avenue. No injuries have been reported at this time. News 4 has a crew headed to the scene and will provide updates when more information is available.