In my observation, FDOT (and JTA, traditionally) is a vehicle to provide cover for politicos who want to steer road dollars to their road builder, developer and other special interests campaign contributors and not much more. Such politicos have little interest, as a rule, in promoting mass transit as those interested in that are not significant donors to their campaigns. Just follow the money.
Exhibit A through Z of "major" are projects include, locally, the outer beltway, 9B and the Hart Bridge ramp removal. All benefit donors more than anyone else. Compare those investments with State dollars for mass transit. If not for Federal dollars, we probably wouldn't have any significant level of mass transit in Jax.