Avens Bridge over South Holston Lake Rte 670 (Denton Valley Road) Abingdon, Virginia Installation of 8 drilled shafts through water, soil and rock. Shafts were 96” diameter with lengths ranging from 42’ to 102’ with 90” diameter rock sockets with lengths ranging from 30’ to 40’. The drilled shafts were permanently cased with galvanized casing through the water and soils and seated into the bedrock. Rock sockets were excavated usi

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