Cost of jacking a 10x4 box culvert

[t230917]

I am looking for costs of jacking in place a 10x4 box culvert OR 2-60 inch pipes in its place. I am also contacting contractors, but wanted to check if anyone has any experience with this, especially as it relates to the cost of construction. I am currently assuming $2,000/foot and wanted to know if I am in the right ballpark. This construction would be in the Chicagoland area.

Thanks.

 

[BridgeEI]

I think your price is in the ballpark for pipe, not including cost of the pipe. We tried something similar on a design build and the contractor said no way to an RCB that was a similar size. They ended up doing a cut and cover instead due to cost alone and that was with a mega interstate with ungodly traffic volumes.

Discussion with the contractor is going to be your best informed decision

 

[amlinerrichard]

Jack and/or bore 2 63 inch casings. Then slide the 2 service pipes through. Then fill the extra space with a hydrophilic grout.Is this under a highway and what length?

 

[t230917]

Yeah I am thinking the contractor will say the same thing for the box, but the client wants us to explore all options.

The culvert will be near the ROW of a highway; but there is also a major road above it, so the culvert will go through the embankment of the road. length will be approximately 400 feet.

 

[BridgeSmith]

Your last comment seems to indicate that the culvert does not go under the roadway, but only under the embankment that supports the roadaway. If this is the case, have you considered temporary shoring (sheet piling, soldier pile & lagging, etc.) to make it possible to excavate for the culvert?

 

[t230917]

Yes, that was our original design. We opted to go for a temporary soil retention system versus sheet piling since that was the cheaper option. The client came back and asked us to explore the "jacking" option.

 

[cvg]

63 inch casings is not large enough for 60 inch pipe. you may be able to direct jack HOBAS pipe and eliminate the casings.

without any geotech information, you are wasting your time guessing the cost. get some borings and then call a jacking contractor.

 

[t230917]

We do have borings and I am also in the process of talking with contractors.

 

[BridgeEI]

Just a thought, but have you looked at laying back the slopes or trenching? Depending on your situation, it may be a significant amount of earthwork but could be cheaper than the temporary shoring options. Obviously you have site constraints we’re not aware of but wanted to throw that there.