Commuters heading north from Portland who linger at work Monday evening may find themselves facing a different way home.

That’s because the on-ramp from Baxter Boulevard to I-295 northbound will close sometime after 7 p.m. Monday and not reopen until construction is completed in the fall.

Crews are working to rehabilitate Tukey’s Bridge and the four overpass bridges that carry 295 over Washington Avenue, Sherwood Street, the Canadian National Railroad and Kensington Street.

Also on Monday, crews will begin striping on the four overpasses. On Tuesday, crews will place barriers to narrow traffic lanes and allow room for repair work to begin.

Two lanes will remain open at all times, but those lanes will be narrow, so motorists should proceed with caution.

Backups are likely during the evening rush, so commuters should consider carpooling, alternative transportation such as bus or bicycle and adjusting afternoon work schedules to reduce traffic congestion between 4 and 7 p.m.

The detour for motorists from Baxter Boulevard seeking to travel north on I-295 involves turning left on Bates Street and continuing on Veranda, which joins Route 1 North. In Falmouth, turn left on Bucknam Road and follow signs to I-295 North.