While constructing Loop 202, Red Mountain Freeway, in June 2006, construction teams encountered an obvious earth fissure exposed in subsurface road cuts. The fissure was filled with darker fine to coarse-grained sediments that infiltrated the fissure during rain events. Isolated blocks of fine-grain sidewall material occur in the central portion of the fissure. The road building team mitigated the fissure by deploying a geosynthetic liner to isolate the fissure. Cost of mitigation was ~ $200,000.
Photographer: Lee Allison
Photo Date: June 2006
Photo Location Accuracy: Approximately Located
Photo Tags: earth fissure, geologic hazard, mitigation, geosynthetic liner, Loop 202, Phoenix 
