MADISON, Wis. -

Madison police said a 26-year-old resident is in critical condition at a local hospital following an accident inside a construction zone late Thursday night.

Police said the incident happened in the 700 block of East Johnson Street near Livingston Street just before 10 p.m. Thursday.

Police said witnesses told them the cyclist was passing traffic in the construction zone and ran a red light before crashing. An examination of his bike after the crash found the carbon fiber front fork had snapped off the bike, potentially causing the crash.

Police said the cyclist was taken to the hospital with a severe head injury. Police said the cyclist was not wearing a helmet at the time of the crash.