[Doomonyou]

Here in Texas, they build bridges largely out of pre-cast beams, rather than casting them in place. Casting in place has the significant benefit of employing dozens of extra workers, all of whom will vote for more of the same.

Here in California, we have big ass earthquakes, And tend to build stuff to withstand those, so typically the stuff is bigger, stronger, more expensive, and take longer to build.

[tpmintx]

Here in California, we have big ass earthquakes,

Do you recall the Loma Prieta earthquake? I was in a high-rise in Santa Clara for that one. I know all about earthquakes.

Yes, there are earthquakes. That said, build the precast beams bigger and with lots more re-bar. You still don't need to cast them in place. You do need to build and cast hugely strong supports in place, but these are not generally in traffic lanes.