altyaplarnda
altyapılarında is a Turkish inflected form that translates roughly as “in their infrastructures.” It is derived from altyapı (infrastructure) with the plural suffix -lar, the third-person plural possessive suffix -ları, and the locative suffix -nda. The morphological order is root -> plural -lar -> possessive -ları -> locative -ında; vowel harmony governs the exact vowels in the suffixes, producing altyapılarında.
The word is used to refer to locations within infrastructures owned or managed by a plural subject.
Examples help illustrate its use. For instance, Ülkenin altyapılarında uzun vadeli planlar uygulanıyor translates to Long-term
See also: Turkish grammar, Turkish inflection, Turkish vocabulary.