A rollover crash Wednesday morning has forced the closure of southbound Interstate 25 near downtown Denver. The crash happened shortly before 8 a.m. and southbound I-25 was closed at 23rd Avenue, Denver Police said in a posting on Twitter. Drivers should expect delays in that area, police said. No serious injuries were reported in the crash. ROAD CLOSED: SB I-25 is closed at 23rd for a rollover crash.