Large culvert for creek crossing???

[murfdog]

Been reading posts for a couple days on here now and finally wanted to get some suggestions. I have a creek to cross to get access to my property. It is normally dry most of the year but fill during the rainy months. The measurements are 15' wide in the base of the creek and about 6' tall banks. There was a bridge that was in place that has long washed out leaving the approaches. The county just replaced a bridge upstream with a large culvert which I believe is an 8' round galvanized pipe with a black rubberized coating. I think they are doing this to save on cost as this is the cheapest solution.
I have found a 6' round culvert of the same material the county has used. The question is would a single large culvert be better than 2 smaller ones say maybe 2 5'footer side by side? Also would pour concrete around the pipe and pack fill in tight after the concrete. Any thoughts from those who may have done something similar?

 

[beenthere]

The 6' is about half the volume of the county's 8'.

The two 5' culverts are about 80% of the county's 8'.

Seems you would be safer with the two 5' culverts.

 

[dawoodwa]

If using 2 culverts allow enough room between them so that you can get sufficient compaction. I've seen pipes put in too close together and they wind up washing out between the pipes and then the whole crossing fails.

 

[crazyal]

Does it fill up and just sit there or does it turn into flowing water? If it's flowing water I would try to stay close to what the town did or have a plan for the water that can't get through the pipe. If you can make a path for the over flow water to get around the culvert so it doesn't overflow and wash everything out. You may not be able to access your property for a few days here and there but it could save you plenty of money.

You may find that two 5' culverts could cost more than one 8' since (if my math is right) there's more steel in two 5'ers.

 

[ITHINKICAN]

I've seen single large culverts - I've never seen multiple smaller ones - keep us informed on what you decide. Good luck!

 

[Thomas]

As beenthere said.
Also if one of two culverts became plug/half flow least you'll have another culvert working.

 

[murfdog]

I have the option of buying both culverts for double the money 1800 for both 20'ft I have priced this stuff and it is expensive! Over a 100.00 a ft. Thanks again for the replys!

 

[Ken45101]

I think two culverts are more likely to catch stuff in the middle than a single culvert. I think a single large culvert would be more reliable. Also, a single 8' is more likely to allow debris through than a pair of smaller 5' which would block some debris.

Ken

 

[oldnslo]

Been reading posts for a couple days on here now and finally wanted to get some suggestions. I have a creek to cross to get access to my property. It is normally dry most of the year but fill during the rainy months. The measurements are 15' wide in the base of the creek and about 6' tall banks. There was a bridge that was in place that has long washed out leaving the approaches. The county just replaced a bridge upstream with a large culvert which I believe is an 8' round galvanized pipe with a black rubberized coating. I think they are doing this to save on cost as this is the cheapest solution.
I have found a 6' round culvert of the same material the county has used. The question is would a single large culvert be better than 2 smaller ones say maybe 2 5'footer side by side? Also would pour concrete around the pipe and pack fill in tight after the concrete. Any thoughts from those who may have done something similar?

Dumb question but since I live in the state of insanity will the county let you put a culvert in?

I have a couple of friends that farm and they have tried to put culverts in to cross creeks and the county won't let them. So they just wait until the creek is dry and drive across.

Roy

 

[gwjd]

is this between the county road and your property ?

if so i would look at the culverts up and down stream how big are they ? the down stream one should be close enough

also i would talk to the county road guys, maybe they offer cost share ? or some thing. free advice and what works and what dose not will probably be available there


also is the proposed drive paved and what kind of cars/ trucks need to use it

the culvert for a tractor and 4x4 truck is very different than that for a corvette and a 80000 pound truck