SHEPLEY Library has been closed on safety grounds.
Parts of the floor are affected by rot and the Marsh Lane building has been closed for emergency repairs.
Repairs are expected to take at least six weeks.
Library manager Janet Pearson said: "We have had to close because of health and safety worries."
The shutdown will allow a full inspection to be carried out.
A mobile library service will operate from Field Way, outside Cherry Tree Court, from next Friday.
It will then run every Friday from 10.45am to 12.30pm.
The mobile service will also operate on alternate Mondays, August 16, September 13 and September 27 from 10.45am until 4pm.
The children's event, Potty Poetry, will now take place at Shepley Methodist Chapel.