Sunday’s high temperature will be in the low 80s, but the Portland Bureau of Transportation’s message to drivers this weekend sounds like what we’d hear in the middle of a snowstorm: If you can, stay home and reserve the roads for people who must travel.

That’s because four miles of Interstate 5 in Southwest Portland shut down last night and will remain closed until 5 a.m. Monday, July 1.

All lanes of the interstate in both directions are closed between the Southwest Terwilliger Boulevard exit and the Capitol Highway overpass while the Oregon Department of Transportation rebuilds a freeway overpass over Southwest 26th Avenue.

Traffic is detoured onto Terwilliger from southbound I-5 and onto Southwest Barbur Boulevard/99W from northbound I-5. But ODOT is encouraging north-south travelers to use other freeways, including interstates 205 and 84, OR 217 and U.S. 26 to get around the four-mile closure.

As of 9 a.m. Sunday, ODOT’s TripCheck.com is showing light to moderate traffic on Terwilliger and Barbur, with free-moving or light traffic on almost all of the other interstates and highways it suggests using. There is a sm­all area of moderate traffic on U.S. 26 East before it intersects with I-405.

PBOT suggests using Google or Waze for information on local roads that are not covered by ODOT’s cameras. You can view Waze on TripCheck by selecting it in the “Map Features” section of the map legend in the upper left of the page.

— The Oregonian/OregonLive