Agitation
The opposition alliance, led by Sheikh Hasina Wajed, head of the Awami League and a former prime minister, called for the blockade in protest at what it sees as the interim government's inability to hold a free and fair election.
"Why can't people in this country resolve their differences in a civilised way instead of resorting to violence and anarchy?"
Shafiq, Dhaka, Bangladesh
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The alliance has threatened to block access to the presidential palace on Tuesday.
US and European diplomats have expressed concern that Bangladesh is heading into a period of serious political instability.
Analysts say the only way out would be to postpone elections, which Hasina has demanded and Khaleda has opposed.
At least 45 people have been killed and hundreds injured in clashes between political rivals since Khaleda ended her five-year tenure as prime minister in late October and handed power to the interim authority.