Suffolk County police arrested Allan Concepcion at his Mount Sinai home on Tuesday and charged him with third-degree rape and endangering the welfare of a child.

Special Victims Section detectives alleged that the 38-year-old suspect had a sexual encounter with a student earlier this year.

Concepcion is also the junior varsity volleyball coach at the school, a gymnastics coach at the Hampton Bays Middle School and an assistant coach with the Long Island Fury volleyball traveling team, police noted.

He pleaded not guilty Wednesday at First District Court in Central Islip.

The MTA started the project in 2011 to add another 40 years to the life of the Shinnecock Canal Bridge, North Highway Bridge and the Montauk Highway Bridge, all of which were built about a century ago.

The work is expected to impact about 400 daily weekday riders in each direction, who should expect delays and plan for buses to take 40 minutes longer than regularly scheduled trains.

LIRR crews will also use the South Fork service suspension to rebuild railroad crossing on Montauk Highway near Flying Point Road as a part of a planned road widening project.

For more information call 511 of visit www.mta.info/lirr.