ST. LOUIS COUNTY, Mo. – Heavy rain pounded parts of south St. Louis City and County Sunday, caused flash floods on roads and in homes.

MoDOT closed Interstate-55 at Carondelet for much of the night Sunday night. The heavy rains sent the River Des Peres spilling over its banks. I-55 was also closed at Reavis Barracks, as Gravois Creek flooded the highway at Union Road.

Traffic was backed up for miles, but the roads re-opened by 9:00 p.m.

Cars were trapped in floodwaters all over St. Louis City and County Sunday night. In south St. Louis, several cars were stuck or stalled after trying to pass through a low-lying underpass.

Photos were sent to FOX 2 from a viewer in south county on Brook Avenue near Jefferson Barracks Park. Water could be seen up over the wheel wells on cars stranded in the street.

There was also a flash flooding in a neighborhood on Tesson Court. This was near River Des Peres in south county. The high water got into the yards of several homes.

More issues from the floods are being observed.