‘Geotechnical Monument’ in St. Louis

A geotechnical 'monument' - An 11-foot diameter limestone rock core excavated for the I-70 crossing of the Mississippi River. David Graham of Dan Brown and Associates is pictured visiting the monument.

A geotechnical 'monument' - An 11-foot diameter limestone rock core excavated for the I-70 crossing of the Mississippi River.  David Graham of Dan Brown and Associates is pictured visiting the monument.

An 11-foot diameter limestone core has become a ‘geotechnical monument’ of sorts according to the good folks at Dan Brown and Associates. DBA was the geotechnical designer for a new bridge carrying I-70 over the Mississippi River in St. Louis. The core is located on the west bank (St. Louis side) near the new bridge. [Source: Dan Brown and Associates, PC. Image: Dan Brown and Associates]