The Pontypool, Caerleon and Newport Railway (PC&NR) was promoted in the 1865 session of Parliament to build a new route to avoid the lower part of the Eastern Valley Line: it was an independent company. It was authorised by the '''''' (
28 & 29 Vict. c. ccclxiv) to build a standard gauge railway totalling, with branches, twelve miles in extent, from a triangular junction at Pontypool to a triangular junction at Maindee, immediately east of Newport station. At Pontypool this gave access from Hereford over the main line, and from their Taff Vale Extension Line. It appears that the
Blaenavon and
Abersychan districts on the upper part of the Monmouthshire Railway were not to be connected at Pontypool, but by a connection to the Eastern Valley Main Line further south, near the 3 milepost from Newport, at a point where the
River Usk makes a northward sweep near
Malpas. Making the connection here would give access from the industrial sites intermediately on the Eastern Valley. (This connection was not actually made.) At Maindee, the westward arm of the triangular junction, coupled with the proposed mixed gauge track, would give access to Newport High Street station of the GWR, and to Waterloo Junction, where transhipment from narrow (standard) gauge wagons to broad gauge already took place; The proposal was speculative; the junctions with the broad gauge would still require transshipping of goods and minerals for onward transit, and the eastward spur at Maindee did not lead to sidings where that might be done. Nevertheless, the possibility of the , who were running passenger trains to Newport over the Monmouthshire line, getting a firmer foothold at Newport was unattractive to the , and it encouraged the new company. At the same time the Monmouthshire Railway and Canal Company was extremely hostile, as the new line would abstract much of their Eastern Valley business. ==Authorisation==