Micropiles Oregon Health & Science University / Portland, OR Installed 78 micropiles in very difficult access conditions. Micropiles were 8 inch diameter with 50 foot casing in silty soils, and a 20 foot bond length into basalt. Three Rivers Casino NE Hwy 99 – NE 20th Avenue Related Case Studies Block L – Lloyd Center…Mercy Corp MicropilesSt Vincent’s HospitalMeacham BridgeThree Rivers CasinoShops at TannasbourneKPDX Tower