For much of the twentieth century, the consensus remained that the road was most probably Roman. It was still referenced as an undoubted Roman road in a 1947 UK Government report. In 1957 Margary, the leading authority on Roman roads at the time, accepted the road as Roman and assigned it the catalogue number 81b in his list of Roman roads in Britain. In the late 1950s and early 1960s, this was a definitive and unquestioned interpretation of the monument. Several works in the 1980s and 1990s stated that Roman-era road construction was still the most probable explanation of the structure.