Thanks for all the replies.
I'l try to answer all questions and throw some comments of my own.........
I like the "one " big pipe solution.....
I'm involved with the a local snowmobile club, and when we put.... say..... ( 2 ) 12 " culverts side by side.... or ( 2 ) drain pipes they would aways plug up or get washed out in the springs rains.... so from working with the club... i like one big pipe idea.
I like poly over steel.... lighter, easy to handle, and seems more available on Craigs list and market place.
In my area... Western NY, There are several ads on the local market place for sections or cut offs.... i've seen 8' pcs, , 10 ' 12' ...different diameters.... and one ad ... buy the 20 " er and he'll cut it to whatever, so. i think i'll go with plastic.
and.....as others posted.... I know.... the larger the diameter, the price really jumps up.
Skeets... it flows off the propety. in the pics, the 4 wheeler is propably 50 - 60 yds up stream of the fence line / property line. I could probably go on their land, but it gets wooded and brushy. But... it flows better thru their area then the grassy area where the wheeler is at.
mikester.... ya.... spring time mainly. it does stay soft in the summer, but last summer was the 1st yr with my tractor so i kept cutting the grass.... sometimes as high as the hood..... and after keeping it knocked down and short, it dryed out toward Aug / Sept.
But its low land, and just real loamy. i'd would hate like heck to get the tractor stuck down there.
I don't like the bridge idea.... again, from working with the snowmobile club where putting in the snowmobile trails, ya.... we have some bridges on our trail system, but it seams culverts last longer and work out better.
I know i'll have to bring some fill in, the only thing i have is my front loader to move fill.
this crossing will only be for the tractor and 4 wheelers.
A question for those following this thread......
how far down will i have to dig to get the pipe to drain properly..?
I know its hard to answer with out seeing the land...... but i don't what to put the pipe too deep, or too shallow.