Drivers going past Sonning Bridge, near Reading, have expressed annoyance at a closed road sign which uses an incorrect apostrophe.
The bridge linking Berkshire and Oxfordshire closed due to flood damage.
Valerie Gabriel, writing on the BBC Berkshire Facebook page said the sign annoyed her and there was "no excuse" for printed errors.
Oxfordshire County Council's Highways councillor David Nimmo Smith said he was unaware of the mistake.
He said: "Our engineers know how to do the job, but they may not be the best at writing signs."