This is the 9427th most frequent Russian word.
трощинским
The word "трощинским" refers to something related to Troshchinsky, likely a surname or location in Russian.
Here, 'трощинским' is declined to match the grammatical case, referring to the Troyeshchyna district.
Я прочитал интересную статью о трощинском районе Киева.
I read an interesting article about the Troyeshchyna district in Kyiv.
In this sentence, 'трощинским' describes the bridge located in the Troyeshchyna area.
В нашей презентации были показаны изображения, связанные с трощинским мостом.
In our presentation, there were images associated with the Troyeshchyna bridge.
'Трощинским' is used in an attributive sense, indicating the architectural style originating from Troyeshchyna.