Widespread moderate or isolated defects resulting in affected strength is classified as which rating?

The classification of widespread moderate or isolated defects that affect strength as a rating of "4 - Poor condition" reflects a significant concern regarding the structural integrity of a bridge. This rating is indicative of conditions where deterioration has progressed to the point where it could impair load-carrying capacity.

When conditions warrant a "Poor" rating, it signals that the bridge components have experienced significant distress or have defects that are beyond minor repairs, suggesting an immediate need for further inspection or maintenance actions to prevent progressive deterioration. A "Poor condition" rating often serves as a warning to stakeholders about potential safety risks if the issues are left unaddressed.

In contrast, ratings such as "5 - Fair condition," "6 - Satisfactory condition," and "3 - Serious condition," indicate scenarios with differing levels of severity and implications for maintenance and safety, but a rating of "4 - Poor condition" specifically addresses the immediate concerns about structural strength that the question highlights.