RICHMOND — Two bicyclists have been injured in separate accidents on Richmond roads over the past four days.

A 15-year-old Richmond boy was hurt around 2:30 p.m. Friday when he failed to stop at a stop sign at the intersection of Hagar and Pleasant streets, said police Chief Scott MacMaster. The bicycle hit the passenger side door of a pickup truck being driven by a 40-year-old Richmond man. The teen was checked by an ambulance crew but was not taken to the hospital.

The next day, Saturday, a Richmond man was hurt when he was thrown from his bicycle while crossing the Richmond-Dresden bridge. The rider suffered a large laceration and was taken by ambulance to Central Maine Medical Center in Lewiston. MacMaster said the crash was caused by the bridge’s grate decking.

The bridge was closed in both directions for about 25 minutes as rescue crews tended to the injured man.