The primary bridge components vary in age from approximately 80 years for the substructure to under 40 years for the superstructure. In general, the bridge is in fair to good condition for its age; however, there are several rehabilitation work activities required to extend the service life. The rehabilitation works identified include:
- concrete deck overlay
- deck joint replacement or elimination
- bearing replacement
- miscellaneous concrete repairs
Structural Engineers have completed a seismic assessment and identified various vulnerabilities including deficiencies in the connection between the superstructure and the piers, sliding of the abutments, and deficiencies in the pier columns. The retrofit work is being completed to a Safety 1’ (S1) standard as defined by the Ministry’s Seismic Retrofit Design Criteria (2005).
The retrofit work includes:
- shear keys
- Steel bracing system between the existing columns
- rock anchors at the abutments
- removal of the remaining fascia panels