 Powered by Beacon Plumbing. Stop freaking. Call Beacon. KBOI. Traffic. On the eastbound lanes of the freeway, some congested traffic starts at 10 Mile, continues past Eagle Road, the connector into downtown Boise, just a little bit congested as you approach the River Street exit. And then on Chinden, eastbound heavy traffic starts at Star Road, continues over to Highway 16. And Karcher and Garrity are a little on the busy side heading over to the freeway.