US 90 vs I-10 across from Louisiana to Florida

Either one has sections that are rough due to slab shifting. US90 in the Lafayette/New Iberia section is very congested with both construction and industry. East of that is near interstate quality until New Orleans. If time is a concern Use I-10 to Baton Rouge then I-12 until it reconnects to I-10 near Slidell. Avid rush hours at Baton Rouge and if east bound stay in the middle lane on the Mississippi River bridge to get thru the one lane choke point on the east side.