
ROGER BACON BRIDGE
A huge cost saving on this project was the use of the existing piles. Found through inspection to be in great condition, the piles allowed Wood Research And Development (WRD) to place a 3-lane bridge where an old steel two-lane bridge existed previously. This was made possible due to the lightweight property of timber. Using existing piles would not have been possible with the weight of concrete or steel. The cost savings with this are estimated at nearly $1 million. Timber Restoration Services (TRS) was retained from NS TIR to produce a design-build bridge to replace the existing 48-year-old steel arch bridge. Being located in the highest embedded and exposed corrosion zone in Canada, many elements of the bridge were rusted out and failed. The bridge had been taken out of service and slated for replacement. TRS teamed up on this project with WRD, who took care of the design aspect and construction oversight for the project. WRD had tested the existing 80-year-old timber piles of the existing structure and determined that with little restoration, these piles had enough capacity to support the new structure and would go another 80 years. TRS manufactured and installed the three-pinned arch glulam timber arch which is the longest three-lane, timber clear span bridge in Canada. The design incorporated the placement of a 500-tonne crane on the jump span to install the timber arches.