A man was hospitalized in critical condition overnight after San Antonio police said he crashed his motorcycle at a high rate of speed just west of downtown.

The crash happened just before 12:30 a.m. Monday on the Frio Street/Durango Boulevard exit ramp on southbound Interstate 35. Police said the motorcycle driver hit a wall and was thrown over it, landing in a grassy area.

Police said the motorcycle continued without the rider and crashed into SAPD's Central Substation.