Sheriff Ed Gonzalez said the I-10 Katy Freeway eastbound ramp to SH-99 southbound was blocked, but it has since been cleared as of 7:44 a.m.
Gonzalez said the motorcyclist went over the SH-99 ramp and was pronounced dead.
The medical examiner's office is working to identify the victim as the investigation continues.
It's unclear at this time what may have caused the incident.
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