This is the 13700th most frequent Turkish word.
köprümüzün
"Our bridge's"
The usage of 'köprümüzün' indicates possession ('our bridge') and the suffix '-ün' shows the genitive case ('of our bridge').
Köprümüzün üzerine yağmur yağıyor.
Rain is falling onto our bridge.
Here, 'köprümüzün' specifies possession and is used to denote the area surrounding 'our bridge' ('etrafında' means 'around').
Köprümüzün etrafında kuşlar uçuyor.
Birds are flying around our bridge.
In this example, 'köprümüzün' highlights ownership and links with 'tarihi', meaning 'the history of our bridge'.