The spill happened about 1 p.m. Thursday.
The ramp is currently closed. There is no estimate when the ramp will reopen.
The mudslide was reported around 3:30 a.m. in the right eastbound lane near the National Turnpike exit.
Currently, the city has 141 Flock cameras in place.
The crash was called in just before 11 p.m. on Thursday night.
A source close to the investigation told WDRB there was an instructor pilot and a student passenger on the plane when it experienced an engine issue while flying near the Lewis & Clark Bridge.
It took LFD crews around 30 minutes to extinguish the flames.
There were three vehicles involved.
Some newer phones will send an automated call to dispatchers if a sensor detects a serious crash.
Yoel Napoles-Ravelo, 32, was shot and killed in the 6600 block of Eagle Wood Drive, which is off Dixie Highway near the Gene Snyder Freeway, at 9:30 p.m.