BELLINGHAM, Wash. – Historic flooding has caused a host of issues for drivers over the past 48 hours and emergency officials are asking people to stay home if possible.

I-5 is now closed northbound in Ferndale and the southbound lanes there are expected to close soon.

There’s a detour there at Slater Road.

Overnight, I-5 was shut down in both directions from Nulle Road to North Lake Samish as crews monitored landslides and floodwaters.

Southbound I-5 is now open, but the northbound lanes remain closed due to the active threat of landslides.

There’s a detour on East Lake Samish Drive but that route is down to a single lane alternating.

The I-5 NB off ramp at Iowa St is still closed, as is the on ramp to I-5 north from Main St in Ferndale.

In Bellingham, Iowa Street from Pacific to I-5 is also closed.

Slater Road has also been shut down in both directions.

Dozens of secondary routes, especially near Sumas and Everson, remain closed as well.

A full list of other road closures in Whatcom County is available here.