This is the 9013th most frequent Russian word.
ржевом
"Ржевом" is the prepositional case of "Ржев," referring to the city of Rzhev in Russia.
Here, 'Ржевом' is used as a locative case form of 'Ржев', a city name, indicating the place of arrival.
Мы приехали в Ржевом, чтобы посетить достопримечательности.
We arrived in Rzhev to visit the landmarks.
In this sentence, 'Ржевом' serves to describe a location where the bridge is situated, again utilizing the locative case.
Этот мост в Ржевом считается одним из самых старых в регионе.
This bridge in Rzhev is considered one of the oldest in the region.
Here, 'Ржевом парке' combines the locative case with a noun to specify that the park is located in Rzhev.