Percent of Structurally Deficient Bridges - 2011 to 2014

Inspections are conducted every year on all MDTA facilities. Defects identified in yearly inspections are assigned a defect rating based on severity by the inspector.

As a measure of quality assurance and control, the rating is reviewed and confirmed by in-house inspection staff during review of the inspection reports. The defects are prioritized based on the confirmed rating and major rehabilitation, total replacement or proactive system preservation projects are developed based on the priorities and overall condition assessment. Bridges are considered structurally deficient if significant load carrying elements are found to be in a poor (or worse) condition due to deterioration and/or damage, or have a low weight restriction.