From the Traffic Desk:
The closure is expected to last from 9 a.m. to 3 p.m. adjacent to Central Park.
Both the police headquarters and animal shelter will be accessible for motorists heading eastbound on Stevenson. Westbound motorists will be detoured off of Stevenson and on to Guardino.
Crews will be moving concrete barriers and placing changeable message signs along Stevenson.
From the wire: