St Helens’ main library is to close for four weeks to allow essential maintenance works to take place.
Central Library will close from Thursday, March 23.
Council chiefs have extended the opening hours of nearby libraries to compensate.
Peter Street and Parr libraris will stay open longer throughout the week, as will Haydock and Thatto Heath on Saturdays.
A council spokesman said: “Central Library customers wanting to use the ‘quick returns box’ can still do so, as it will be situated in the foyer of the Gamble Building.”