Tag Archives: I-70 Mississippi River Bridge

“Geotechnical Monument” in St. Louis



It may not have been intended as such, but we will “claim” this large rock core on the Mississippi River as a “geotechnical monument”.  At the site of the new I-70 crossing over the Mississippi River in St. Louis, one of the 11-foot diameter limestone rock cores retrieved from one of the rock sockets drilled for the bridge foundations has been placed on the river bank along with a sign. Our own David Graham stopped by and had some pictures taken when on a personal trip their last year.  So, the next time you are in St. Louis, look for the big hunk of rock on the west bank (St. Louis side) near the new bridge north of the Arch.

Check out our previous posts on this project here.


DSC_0723         DSC_0724

Project Update–New River Bridge (I-70), St. Louis, MO


Photo Credit: Missouri Department of Transportation

I and my fellow bloggers here at DBA (David Graham and Aaron Hudson) try to keep up with the various projects under construction that we had a part of.  Sometimes it is hard to do once we have left the site after foundations are complete.  Modern information technology makes it much easier, especially since most large infrastructure projects have a significant public outreach effort, either by the project design/build team, or the owning agency.

One such project, the New Mississippi River Bridge (I-70 Bridge) in St. Louis, MO, is really coming along.  If work didn’t get in the way, I could spend a lot of time just browsing project photo galleries, or looking through the project cams.

(Previous posts)

I-70 St. Louis Bridge–New Papers by Paul and Dan

The drilled shaft foundations for the new I-70 Mississippi River Bridge in St. Louis, MO are the subject of two recent papers written by Paul and Dan and published by DFI.  Dan presented the paper focusing on the Alternate Technical Concept (ATC) process at the DFI 36th Annual Conference in October. (previous post here).  A case history paper by Paul and Dan was published last month in Volume 5, Number 2 of the DFI Journal.  Links to the papers are below, as well as on our Publications page.  Other posts on this bridge are here.

Brown, D.A., Axtell, P.J., and Kelley, J. (2011). “The Alternate Technical Concept Process for the Foundations at the New Mississippi River Bridge, St. Louis”,  Proceedings of the 36th Annual Conference on Deep Foundations, 2011, Boston, MA, USA, pp171-177.

This paper was originally published in the Proceedings of the 36th Annual Conference on Deep Foundations, the 2011 annual meeting of DFI.  Go to www.dfi.org to purchase the procedings or for further information.

Axtell, P.J. and Brown, D.A. (2011). “Case History – Foundations for the New Mississippi River Bridge – St.Louis”, DFI Journal Volume 5, Number 2, December 2011, Deep Foundations Institute, pp3-15.

This paper was originally published in DFI’s bi-annual journal, Volume 5, No. 2 in December 2011.  DFI is an international technical association of firms and individuals involved in the deep foundations and related industry. The DFI Journal is a member publication. To join DFI and receive the journal, go to www.dfi.org for further information.