I've changed this to not:wikidata. The stucture visible in Bing Streetside is clearly not a "dual arched masonry bridge of 1849". As trigpoint says this was demolished when the dual carriageway was built.

For heritage details the wikidata tag is not really adequate on it's own. Please consider adding ref:cadw in Wales or HE_ref in England, and the listed_status=*. These are much more useful for someone verifying OSM data in the field, and allow direct linked data to the actual data originators rather than having to do complex SPARQL queries (which often perform poorly and are inaccessible to most contributors).

Thanks,

Jerry aka SK53