Business Loop I-5 - Redding and Anderson

An older business loop for I-5 followed Old Highway 99 and Market Street (now SR 273) northward from Anderson to Redding west of Interstate 5. Old AAA California maps (1970s and 1980s) referenced what is now SR 273 then as Business Loop I-5. Jerry Mullady originally reported that Business Loop I-5 in Redding was no longer posted. This was field verified in May 2008.

SR 273 constitutes a four lane expressway northward from the split with I-5 at Exit 667 to the Union Pacific Railroad overpass in Redding, where the route transitions into a commercial arterial. Beyond Downtown Redding, SR 273 (Market Street) crosses the Sacramento River ahead of what locals refer to as the Miracle Mile, a stretch lined with old motels. Expressway standards ensue from there to a wye interchange with Interstate 5 at Exit 681.