When determining whether a bridge should be posted for load restrictions, what is the inspector's recommended approach?

When determining whether a bridge should be posted for load restrictions, what is the inspector's recommended approach?

• A. Evaluate the bridge's current condition and capacity against legal loads; if capacity is insufficient, post restrictions and document.
• B. Compare only the age of the bridge to a threshold.
• C. Post restrictions automatically if the bridge has been in service more than 50 years.
• D. Rely on previous inspection notes without performing a new evaluation.

Answer: (A)

The key idea is to base the posting decision on a current, item-by-item assessment of what the bridge can safely carry, compared to the legal vehicle loads. An inspector should perform a thorough condition evaluation and a load-rating analysis using the bridge’s present state—looking for deterioration, corrosion, cracking, fatigue, joint and bearing conditions, and any structural weaknesses. Then that current capacity is directly compared to the legal loads that the bridge is allowed to carry. If the capacity under those loads is insufficient, posting with weight or configuration restrictions is warranted, and the inspector should document the findings and the rationale clearly for the record. If the capacity meets or exceeds the legal loads, posting isn’t required, though ongoing monitoring and periodic re-evaluation should continue. Relying only on age isn’t reliable—bridges older than a threshold aren’t automatically unsafe, and younger bridges can still have serious issues. Similarly, posting based solely on past notes without a fresh evaluation can miss new deterioration or changing conditions. A fresh, documented evaluation ensures safety and compliance with standards.

The key idea is to base the posting decision on a current, item-by-item assessment of what the bridge can safely carry, compared to the legal vehicle loads. An inspector should perform a thorough condition evaluation and a load-rating analysis using the bridge’s present state—looking for deterioration, corrosion, cracking, fatigue, joint and bearing conditions, and any structural weaknesses. Then that current capacity is directly compared to the legal loads that the bridge is allowed to carry. If the capacity under those loads is insufficient, posting with weight or configuration restrictions is warranted, and the inspector should document the findings and the rationale clearly for the record. If the capacity meets or exceeds the legal loads, posting isn’t required, though ongoing monitoring and periodic re-evaluation should continue.

Relying only on age isn’t reliable—bridges older than a threshold aren’t automatically unsafe, and younger bridges can still have serious issues. Similarly, posting based solely on past notes without a fresh evaluation can miss new deterioration or changing conditions. A fresh, documented evaluation ensures safety and compliance with standards.