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We need to secure funding for road development in rural areas.
Literal
Rural road improvement [for-ための] funding securing [subject-が] necessary [copula-です].
地方の道路整備 ('rural road improvement/maintenance') is infrastructure vocabulary. 財源確保 ('securing funding sources') combines 財源 ('financial resources') + 確保 ('securing'). が必要です ('is necessary') is the straightforward necessity pattern. A political/budgetary statement — the kind of sentence heard in local government meetings.