Authorities transported a motorcyclist to the emergency room Friday night after he hit a guardrail on the 51st Street viaduct and fell into the water below, officials said.
The motorcyclist was heading west on Harborside Drive and struck the rear end of a Texas City Independent School District bus before losing control, Galveston Police Department Capt. Joshua Schirard said.
The viaduct is a tall overpass that carries traffic on Harborside Drive and 51st Street over a collection of railroad tracks.
Four students were on the bus at the time it was hit, but medical authorities determined they were unharmed, Texas City ISD spokeswoman Melissa Tortorici said.
The students live in Galveston but attend school in Texas City through the McKinney-Vento Homeless Assistance Act, Tortorici said.
The motorcyclist was transported to the emergency room after being rescued from the water under the bridge. His injuries are unknown, Schirard said.
Thousands of motorcyclists are in Galveston this weekend for Lone Star Rally, the largest known four-day motorcycle rally in the country. The event ends Sunday.