The National Library Building is at 100 Victoria Street. It is easily accessible from Bugis and City Hall MRT stations and also served by many bus services:

Bus stop (North Bridge Road):
SBS 7, 32, 51,63, 80,145, 175, 197, TIBS 61 and TIBS 851

Bus stop (Victoria St - Allson Hotel):
SBS 2, 7, 12, 32, 33, 51, 63, 80 TIBS 61 and TIBS NR8

Bus stop (Victoria St - Bras Basah Complex):
SBS 2, 12, 33, 130, 133, TIBS 520, 960, NR7 & NR8.

Bus stop (Victoria St - St. Joseph's Church):
SBS 130, 133, 145, 197, C3, TIBS 851, 960 & NR8.

Bus stop (Middle Rd - Nam Peng Building):
SBS 56, TIBS 980

If you’re driving, the car park entrance is from Bain Street.