A motorcyclist died following a four-vehicle crash on US-1 just north of Post Road Monday morning, according to the Florida Highway Patrol. Troopers say the rider was taken to the hospital but later pronounced dead. No other injuries have been reported. The crash happened around 7:30 a.m., shutting down northbound lanes of US-1. Drivers are being detoured to Wickham Road, while southbound traffic remains unaffected. Authorities continue investigating the cause of the collision, and the roadway is expected to remain closed until cleanup is complete.