I was planning on buying an Alaskan Mill in the summer as I will be taking on around 40 acres of woodland (10 acres of douglas & sitka the rest assorted hardwood) which has been neglected for the best part of 50 years. Initially I will just clear the fallen & dangerous trees which the landowner will sell off as firewood then I will look at the best way to manage the site. Due to location & access being able to mill the timber in situ will make extraction easier & it's certainly preferable to paying someone else £28 per hour to bring his bandsaw up as I usually have to when I need milling done.
Getting to the point I am carrying out some riverbank work for the same landowner. Usually there is barely 6" of water in most places along this stretch of river but recently it's been constantly in flood making crossing very difficult anywhere along the mile of river he owns & I am almost out of trees to prune or fell on the side I can access.
Discussed the issue with the landowner & the solution we have agreed on is that I will build a footbridge so I have at least got one point I can cross safely on foot when it is not usually possible to do so either on foot or in a tractor due to flooding, he then gets the benefit of the bridge in the future.
It will be a 20' span, the bank is approx 6' higher than standard water level approx 2'-3' higher when in flood. rather than bringing in timber it makes sense to bring forward my Alaskan Mill purchase & use what is already there. The trees which are long/straight/thick enough for the full span in the vicinity are Alder, Ash, Sycamore & Wych Elm. There is also about a dozen 80' Douglas firs around which ideally want to be left alone but can be used if required. Shorter thinner sections available are as above & crack willow, goat willow, hazel, hawthorn, oak, silver birch.
I should probably mention I am looking at purchasing the 30" Alaskan & will initially be using my Echo CS-8002 with a 28" bar. May upgrade in the future.
Part of me is tempted to use the douglas for convenience as it will give nice long straight lengths simplifying the job but as said ideally those will not be dropped at the present time. I can't extract timber from the woods yet either as I have yet to take a digger up there to make a track up the hill so i can access the woodland on something bigger than a quad I did consider taking the 4wd dumper up there but my sense of self preservation keeps kicking in preventing me from doing so.
Any advice on which of these trees would be best suited to build this bridge would be appreciated.