The Grape Line buses that make three roundtrips daily between Walla Walla and Pasco celebrated four years in service this week.
Ridership continues to grow, from 448 passengers in 2007 to more than 8,800 passengers in 2010. To date, the Grape Line has served more than 27,700 passengers.
The buses have connections to Greyhound, Amtrak, Ben Franklin Transit, Valley Transit and Tri-Cities Airport.
For more information, go to grapeline.us.