The following projects are expected to affect traffic, according to the Department of Transportation.
Millersylvania State Park: Shoulder repairs will close a lane of state Route 121 at the park from 9 a.m.-1 p.m. Thursday.
Yelm: Utility system replacement will close shoulders and one lane of traffic in both directions of state Route 507 at Koeppen Road from 8 a.m.-4:30 p.m. Tuesday through Friday.
Lacey: Tree trimming will close a lane of state Route 510 between Mullen Road and Reservation Road from 8 a.m.-3:30 p.m. Tuesday through Thursday.
Aberdeen: Guard rail repairs will close the right lane of U.S. Highway 12 at Central Park Drive from 8 a.m.-3:30 p.m. Thursday.
Aberdeen-Grayland: Sign cleaning will cause slight delays in both directions of state Route 105 between Aberdeen and Grayland from 7 a.m.-4 p.m. Friday.