Is it your train that is moving, or the one next to you? Tide gauges show the Louisiana coast to have the fastest “sea level rise” on the planet. But it doesn’t have much or anything to do with changes in sea level. The land is sinking.
The crust floats on a highly viscous mantle. When floods spread an inch of silt across the flood plain, the land later sinks nearly 2/3 of an inch to compensate (continental crust is less dense than the mantle, which is why it floats.)
By putting levees up along the river, they have stopped the flooding and deposition of silt. The land is sinking because of the weight of sediment from past floods, as well as pumping of oil and groundwater – which causes subsidence. But no new land is forming because of the levees.

