Interstate 90 and State Route 520 are busy regional corridors that link  major population and employment centers. They form the Cross-Lake Washington Corridor serving residents on both sides of Lake Washington.
 
WSDOT is conducting an environmental review of tolling I-90 between I-5 in Seattle and I-405 in Bellevue. The environmental assessment, conducted under the National Environmental Policy Act, will describe:

• why tolling on I-90 is being considered
• how it would be implemented
• how the proposed approach was developed
• how tolling would affect those who use I-90 and surrounding communities, including low-income populations
• other possible environmental effects such as land use, economics, energy and climate change

When the environmental assessment identifies environmental effects, the report will describe what can be done to avoid, minimize or mitigate these effects.