The first test series used a group of 700 people as subjects. This statically loaded the bridge to approximately one-third
capacity. The testing involved walking the test subjects across the deck at various metered speeds with variable group
sizes. Maximum local loading density was one person per square meter. This first test series was essentially for
preliminary assessment of the modified bridge, and no anomalies were noted.
The second test series was totally unplanned, and occurred in the period of January 27 through January 29, 2002, when
severe windstorms swept the entire United Kingdom. The overall event was categorized as a ten year return period wind
storm, with peak gusts at the bridge in the 120 km/hour range. Again, no anomalies were noted.