 Road crews in the Portland area shut down a major freeway there over the weekend so they could clean up miles of graffiti. Less than 24 hours after the project was completed, the vandals struck Interstate 84 again. This is a problem. Everybody in the community knows graffiti and litter are a problem in the I-84 corridor and in many places around the community. Don Hamilton with the Oregon Department of Transportation says they're working with state police to help discourage the vandalism.