9:45p UPDATE: All lanes have now been reopened.
Officials have announced the southbound left lane of I-5 is closed 2 miles north of Rogue River (MP 50) now through approximately 9 p.m.
Crews are removing spilled lumber from the road median.
Expect delays. Slow down and watch for crews and equipment.
Medford Alert will continue to monitor this and provide an update when available.