Client: City and Borough of Juneau
Owner: City and Borough of Juneau
Cost of Work: $320,000

Approximately 1/4 acre of additional parking space was needed at Harris Boat Harbor, and the access road required widening. Other improvements called for paving, drainage and striping layout. PND designed a 450-foot-long by 10-foot-high retaining wall of geotextile fabric, faced with treated timber, for an estimated $20 per square foot, compared to $50 per square foot for a soldier-pile bulkhead with a reinforced-earth wall. The geotextile had to be flexible enough to be wrapped around the timber wall, while providing a uniform, flat interface surface for subsequent layers of geotextile and timber. A test section of wall was built to ensure strength and constructibility. PND also provided contract administration and inspection services for this project.