A BUS has come dangerously close to falling off the side of an overpass above the Logan Motorway.

Police said the driver was injured after hitting the guard rail in a single vehicle accident at Browns Plains about 8.45am Wednesday.

The bus came within two metres of the edge of the Mount Lindesay Highway, a DCS spokeswoman said.

The female driver was briefly trapped when the crushed front of the bus stopped the front door from opening.

Fire and rescue officers helped her leave via an emergency exit before she was transported to Logan Hospital in a stable condition.

Emergency services said it was understood there were no passengers on board.

The fire crew also helped clean up a diesel spill from the damaged bus with chemical absorbents.

Originally published as Crash leaves bus on edge of overpass