Prefabricated Bridge Elements and Systems
Pelican Creek Bridge
|Contact Person||Mike Higgs, P.E.,|
Alaska Department of Transportation and Public Facilities,
This bridge has precast decked double-tee girders with precast caps and steel piles. It is one bridge 178 ft. long and 18 ft. wide with 3 spans.
A small fishing community on Chicagof Island in southeast Alaska needed a new bridge quickly after buying a fire truck that was too heavy for their old timber bridge. Construction requirements included staying out of the sensitive creek bed and completing work within a short time defined by the Department of Fish and Game. The Alaska Department of Transportation & Public Facilities chose a totally prefabricated bridge with all material, including rock for the approach fill, barged to the work site. The contractor floated in barges at high tide and anchored them in the creek. Crews drove steel piles from barges, drove a large wheeled crane onto the barges, and then used the crane to install first caps and then decked double-tee girders, post-tensioning the diaphragms. No heavy equipment was lodged in the creek bed. All construction completed in approximately 5 weeks in 1992.
|Other Keywords||totally prefabricated bridges|
|Advantages||Minimized environmental disruption, constructibility|
|Contract Elements||Superstructure Detail Sheet|
|Photo Credits||Alaska Department of Transportation and Public Facilities|