Northgate in Halifax town centre will be closed on Sunday.
The street will be closed between midnight to around 5pm while essential works are carried out at the Princess Buildings.
A signed diversion will be in place.
Essential information: Arriva, First and Yorkshire Tiger Buses will be affected by the closure.
Buses will not serve stops on Market Street.
For 21, board at stop 25 George Street
For 510, 512, 521, 522 and 523 board at stops 7 and 8 King Edward Street
For 541 and 542 board at the bus station
Services to the bus station wil operate via Cow Green and Broad Street