Today's Quiz

All states, excepting Alaska, have interstate highways. Name the only state where every interstate highway within its borders is even numbered.

Bonus: Name the five states only having odd numbered interstate highways.

(I was spending some quality time with my road atlas just now.)

Edited to add:

The first question must be revised not to include interstate highway spurs. Arrgh. If spurs are included, no state has only even numbered interstates!