Hate to tell you but rail is still the single biggest freight mover. The problem isn’t necessarily the trucks themselves as many modern trucks have less ground pressure despite heavier weight due to the wider tires and additional axles they have over their 50s counterparts. The real problem is the 60-odd years of increasing neglect and craptacular maintenance (or lack thereof).
Nationally, trucks carry about seven times more tonnage than railroads in the U.S.
USDOT -- Freight Tonnage by Mode
Having said that, I should also point out that there are no transportation infrastructure projects that can change this. Trucks dominate our freight transportation system because they are so flexible and can travel almost anywhere. Very few business establishments in the U.S. have rail sidings that serve them directly.