[1] The bridge is noted as a local landmark because for ten years it bore a graffiti slogan, "give peas a chance" painted in large white letters on the south-facing parapet.

[5] Between 2008 and 2018, the Chalfont Viaduct bore a graffiti slogan, "give peas a chance" painted in large white letters on the south-facing parapet, visible to M25 drivers heading in a clockwise direction.

Google Streetview images suggest the words "give" and "a chance" were added at some point between June and November 2008; it is unclear whether these were painted by the same person as peas.

[7][4][8] The graffiti became a popular local landmark and was regarded affectionately by motorists and residents in nearby settlements as a reassuring location marker.

The reception towards this modification was largely negative, to the point that a petition to Network Rail to reinstate the previous slogan and make the bridge a listed building was produced, and received over 2,000 signatures.