the 11 foot 8 bridge (which was recently raised to 12ft4in of clearance) was designed to car standard, not to train standard. it was also designed in the 1920s, when the standard for cars was lower. it has nothing to do with the grade trains are on.
I live next to a literal over-under bridge for freight trains where two tracks cross over eachother in order for freight yard operations to not block passenger rail.
Yes, it is totally possible to raise and lower the levels of train tracks, but it takes lots of logistics and a long path of gradual elevation change to arrange all that.
You’re not really saying much by pointing out they raised 11foot8 to 12foot4, a whole whopping 8 inches. And it took them how long and how much money to do even that?
the 11 foot 8 bridge (which was recently raised to 12ft4in of clearance) was designed to car standard, not to train standard. it was also designed in the 1920s, when the standard for cars was lower. it has nothing to do with the grade trains are on.
I live next to a literal over-under bridge for freight trains where two tracks cross over eachother in order for freight yard operations to not block passenger rail.
Yes, it is totally possible to raise and lower the levels of train tracks, but it takes lots of logistics and a long path of gradual elevation change to arrange all that.
You’re not really saying much by pointing out they raised 11foot8 to 12foot4, a whole whopping 8 inches. And it took them how long and how much money to do even that?
just pointing out that it’s not fixed and it’s not a good example anyway.