kcICON is a $245-million "interstate connections" project upgrading I-29/35 to 6 lanes, from just north of the Route 210 / Armour Road interchange to Independence Avenue in Kansas City, Mo. The project includes an additional southbound lane, reconstruction of numerous on-ramps and off-ramps, and several interchangereconfigurations. An "iconic" cable-stayed bridge, expandable to 8 lanes and capable of accommodating a future bicycle/pedestrian facility, is the key feature replacing the existing Paseo Bridge. As the geotechnical consultant for the kcICON project, Terracon drilled more than 200 borings along the alignment, including 23 barge borings for the new River Bridge, and performed geotechnical laboratory testing for the project. Terracon provided geotechnical design for 6 bridges, 23 retaining and sound walls, cut and fill slopes, and non-standard barrier walls for the 4 mile project site. Terracon provided independent geotechnical review of the River Bridge geotechnical reports and evaluations. Terracon also assisted the team in developing specifications and a test pile program that allowed the used of cost-effective prestressed concrete pile foundations, not currently provided in MoDOT specifications.