Reconstruction of Bridges at Tangier Island and Installation of Zellcomp Deck System
November 13, 2006
On November 9, 2006, North Star Construction Corp. (Contractor) and Zellcomp, Inc. started the installation the Zellcomp two-part composite deck system on the replacement bridge on Canton Road over Canton Creek. This is part of a bridge replacement project where two bridges are being replaced and each bridge will utilize a different FRP Deck system. The Contractor plans to install the Strongwell's composite deck system the week of November 20th on the bridge on Canton Road over Branch of Canton Creek.
Tangier Island, located in the middle of the Chesapeake Bay, is an environmentally sensitive area with limited access to construction equipment and a very corrosive environment.
Access to the bridge site required the Contractor to barge everything to the Island's dock and transport the equipment and construction materials thru the center of town where the road is only 8-10 feet wide throughout and zigzags right and left to the bridge site. Due to site and transportation restrictions, The Virginia Department of Transportation (VDOT) worked with the Contractor and manufactures to allow for construction of the bridge in the mainland and barging and transporting of all the bridge components to the site.
The bridge superstructure is composed of two galvanized steel trusses with cross beams that were partially assembled and barged to the island. The abutments were precast and barged to the island and utilize high performance concrete with stainless steel reinforcement.
The FRP deck system is manufactured by ZellComp, Inc., and is made up of is light weight, easy to install and durable. The system is installed using mechanical fasteners and does not require any adhesives except for stainless steel screws coated with a two component epoxy. The decking system was tested at Virginia Tech Structures Lab with funds from the Federal Highway Administration Innovative Bridge Construction program. The incorporation of the FRP deck system allows for accelerated construction with enhanced corrosion resistant material that will provide for a deck system that will endure the corrosive environment with minimal maintenance.
The partnering of VDOT, Virginia Transportation Research Council (VTRC), contractor, manufacturer, academia and FHWA has resulted in a project which meets many of the Highways for Life objectives by delivering a long-lasting, innovative, fast and efficient project with minimal disruption to the island residents and no impact to the environmentally sensitive location.
Bottom of a deck panel attached by clip angle to the top flange of a rolled beam