MILWAUKEE (CBS 58) -- A death investigation is underway in downtown Milwaukee after a person died at the Kilbourn Avenue bridge Monday afternoon. 

Police say a pedestrian was walking across the bridge just after noon, when the bridge raised, causing them to fall. 

The pedestrian, a 77-year-old Providence man, sustained fatal injuries. 

The bridge has been closed to car traffic for several hours since this happened, shortly before 1 p.m. Monday afternoon.

The bridge has not opened for boats, either, though water traffic underneath has been open the entire afternoon to kayakers and small boats.