Wooden bridge which material

[florian]

Hello,
we have a wooden bridge at home that is in dire need of renovation.
I'm considering whether pine or spruce is better as a material. And then how do I protect the wood with some oil or is there a better alternative?
Thankful for answers and tips!
Best regards, Florian

 

[cheetah1]

So, a bridge over some form of waterway, or a bridge like in the steps outside the door?

 

[florian]

Hello,
a bridge over a small stream that we usually drive over with the car.
The planks that are installed today have dimensions 50*200*3000

 

[cheetah1]

Oh, cozy. Is there perhaps a picture? What do the bridge abutments look like? What is the span?

Regarding the type of wood, I'm not sure, but most constructions are made of spruce; perhaps some form of glued laminated beams for the load-bearing structure?