This is the 4020th most frequent Polish word.
wojewódzkiej
"Of the voivodeship" (relating to an administrative region in Poland).
Here, 'wojewódzkiej' is used as an adjective describing 'administracji', meaning 'provincial' or 'related to a province'.
Byłem na spotkaniu w siedzibie wojewódzkiej administracji.
I attended a meeting at the headquarters of the provincial administration.
In this sentence, 'wojewódzkiej' modifies 'biblioteki', indicating that the library is of a provincial level.
Muzeum znajduje się obok biblioteki wojewódzkiej.
The museum is located next to the provincial library.
Here, 'wojewódzka' describes 'droga', specifying that this is a road administratively categorized as provincial.