In early October 2013, all nine noise barriers were approved in the Central segment of I-39/90 expansion project, in Janesville. Read the noise barrier approval letter.
At the start of a state highway project, the Wisconsin Department of Transportation (WisDOT) determines noise impacts and evaluates possible mitigation measures, such as noise barriers.
After careful evaluation and a voting process, WisDOT installs noise barriers along portions of state highways to minimize noise impacts.
If a simple majority of the benefited receptors (properties with 8dB reduction) approve, noise barriers will be constructed in the proposed locations.
The following documents are in Adobe PDF format. (Note: Some files are large and may take longer to download depending on individual connection speeds. Users may need to zoom in to see details.)
- Noise barriers: what you should know
- Possible noise barrier aesthetics
- Noise barrier aesthetics – presented at the Public Involvement Meeting on Nov. 18, 2014
- Noise barrier effectiveness
- Noise barrier approval letter
Noise barrier locations
Approved noise barriers to be installed during 2018-2019 construction seasons.