Bus services in Sheffield city centre will be diverted today.
Charter Row and Furnival Gate will be closed to allow for demolition works to be carried out to the old Redgates building.
All bus services will be diverted via Eyre Street down to St Mary's Gate roundabout.
Services will not be serving Charter Row or Cumberland Street.
A Travel South Yorkshire spokesman said: "The closure on Charter row is expected to last until the end of service today.
"Please plan ahead if catching the bus in this area."