Current traffic volumes on SR 510 through Yelm lead to congestion during peak commute hours. Congestion is especially heavy during the summer travel season or when drivers move off of I-5 to avoid incidents. The map below shows 2018 traffic volumes.
The SR 510/Yelm Loop improvements will offer drivers a more free-flowing route through the area. The map below shows forecasted traffic volumes in 2022, without Yelm Loop, and how those volumes shift with the addition of the SR 510/Yelm Loop improvements.
In 2040, the advantages of the addition of the Yelm Loop will be even more clear, as shown in the maps below.