These signs are situated at the junction of the Whitelye/Narth roads with the B4293 and also at the tollhouse in Mitchell Troy.
The dates given are those when the road will be CLOSED for the completion of resurfacing work.
However, just to complicate things, the Penallt web site has more up to date information about the road closures, and some better news. It seems we shall be able to get to Monmouth by going through Penallt most of the time, and that route will only be closed on the evenings of 18th and 19th after 7pm.
Full details on the Pelham Hall web site, with thank to David May for doing this and letting us know about it.