Atelier Ten's lighting design team surveyed the banks of the River Thames and 15 of its bridges, and set light level targets for the bridges relit as part of Illuminated River to sit sensitively within the surroundings. The survey results ran to 150 pages – ten pages per bridge, containing tables of the measured and proposed light levels for each bridge. Needless to say, this dry technical information did little to allay the public’s concerns of light pollution at night!
I created this infographic above, showing all data from the lighting surveys and the proposed light levels for the bridges on one image. Published on Illuminated River’s website, it reassured those concerned about light pollution by illustrating that the bridges would not be brighter than their surroundings.