The road still dips between vertical rubblestone walls to pass under the line of the Padarn Railway. The substantial stone abutments of the former railway bridge are built on a skew, of uncoursed well-squared stones, the outer margins dressed simply. Both abutments and the adjacent walls contain examples of stone sleeper blocks with the indentations of 2-bolt iron chairs.
The Padarn Railway was built to the unusual gauge of 4ft (1.22 metres) to carry slate from the Dinorwic Quarries; it was opened opened in 1843 and closed in 1961.
W J Crompton, RCAHMW, 12 November 2009.