More than 3000 bus services, across three of Brisbane's busiest bus routes, have been at capacity and forced to skip stops in the past 12 months.

Figures released by Brisbane City Council show route 66, between the Royal Brisbane and Women's Hospital and UQ via Woolloongabba, has been reported being too full to pick up additional passengers.

The data was only released following Transport Minister Mark Bailey's announcement this week of $1 million extension of bus routes that service University of Queensland St Lucia campus.