Unpublished Pecos Street Grade Separation

Project Location: Denver, Colorado
Date Completed: September 2010
Methodology: Hand Tunnel/Auger Bore

UIT installed over 1,600 LF of RCP and steel casing ranging from 20 inches to 72 inches beneath existing rail lines, utilities and canals utilizing both hand tunnel and auger boring methodology. The project required dewatering to maintain static level of groundwater below invert of tunnel through the use of deep well systems installed at tunnel launch and receiving shafts. Groundwater contamination required the use of frac tank storage and treatment of water prior to release.