Baulk road is the name given to a type of railway track or 'rail road' that is formed using rails carried on continuous timber bearings, as opposed to the more familiar 'cross-sleeper' track that uses closely spaced sleepers or ties to give intermittent support to stronger rails.
Baulk road was popularised by Isambard Kingdom Brunel for his 7 ft 1⁄4 in (2,140 mm) broad gauge railways in the UK, but has also been used for other railways and can still be found in modified form in special locations on present day railways.