New Yorkers and tourists are about to get their first look at the inside of a $3.9 billion transportation hub at the World Trade Center site.

Officials say the transit hub's cathedral-like pavilion will partially open to the public Thursday afternoon.

The Port Authority of New York and New Jersey says it will hold a ceremony this spring when all the entrances to the train station are open.

The transportation hub was originally budgeted at $2 billion.

Cost overruns have been blamed on the architect's demands and the logistical complexity of building it while the Sept. 11 memorial and office towers were also under construction.

The transportation hub will connect Port Authority Trans-Hudson trains to New Jersey with 11 New York City subway lines and ferry service.