Part of State Route 99 in Seattle will be closed for approximately three weeks starting January 11 when the Alaskan Way Viaduct closes for good. Multiple alternate routes will be impacted. Here's a tip on how to avoid the headaches of the commute.

Consider taking advantage of King County Metro Transit, Sound Transit, and Community Transit bus services. The buses will still face some delays from the increased traffic, but as a rider you can just sit back and relax. Online trip planners on all of the agencies websites offer easy and convenient information about routes, bus stops, and transfers between services.

RELATED: Survive the Seattle viaduct closure: What to know for your commute

Twelve bus routes that usually use the viaduct will be on reroute through SODO.

After the new SR 99 tunnel opens, the buses will move to a permanent route on First Avenue South.

RELATED: A beginner's guide to mass transit in Seattle

The routes being affected are 21x, 37, 55, 56, 57, 113, 120, 121, 122, 123, 125, and the Rapid Ride C Line. There's a map provided showing the reroutes.

The metro services are expecting to see more ridership along with more commuter traffic that will create trip delays.

When you visit your nearest bus stop the route numbers are shown on the bus stop flag and oftentimes will have bus schedules in a holder. If not, you'll be able to grab one once you board the bus.

Mobile apps have proven to be very useful for metro riders such as OneBusAway, which works on both your computer and mobile device. Just zoom in on your location and find out which routes are closest to you.

You can purchase an ORCA pass and load money on to it for the week closure, or you can buy a monthly pass.

RELATED: How to get an ORCA card

Join KING 5's Seattle Tunnel Traffic Facebook group to stay up-to-date on the latest Seattle tunnel and Viaduct news and get tips to battle traffic during the three-week Viaduct closure in January.