I have a large pergola (arbor) on my deck: 25' long, 12'wide, 8'high (from the deck floor which is 3' from ground level.) The pergola top (
Actually in Baton Rouge you are in cold hardiness zone 8 and heat zone 9. Some choices for such a vine that are evergreen and blooming include:
Chinese Wisteria (Millettia taiwanensis)
Tangerine Beauty (Bignonia capreolata) - semi evergreen
Evergreen Wisteria (Millettia reticulata)
None are invasive but the Crossvine can really run long distances if there is something against the arbor for it to climb onto.
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