Most of Hwy 37 in Marin County remains closed by flooding

Highway 37 flooding

MARIN COUNTY (KRON) — Highway 37 was closed Wednesday morning after Tuesday’s showers caused the roads to flood.

But at around 11:45 a.m., the fast lane on the eastbound side reopened.

Novato Creek flooded during yesterday’s downpour, eventually closing both directions of the highway.

Both directions remain closed between Atherton Ave. and Hwy 101, with no timeline for reopening.

Take Atherton Ave to Hwy 101 as an alternate route.

Traffic is likely to be slow through commute hours.

“Looking ahead to tomorrow we are seeing some pretty grim weather predictions. The area is supposed to get hit with another strong storm which will likely result in more weather related closures. Over a dozen Marin County Schools have already announced their closures tomorrow due to anticipated weather related hazards. As much as we hope the pumps will keep the flooding under control, we are planning ahead to another full closure of SR-37,” the CHP said.

The CHP provided these tips for drivers:

1.) Prior to leaving for work/school in the morning, check your routes to see if there are any closures or hazards. We recommend utilizing services such as (

2.) If you decide to drive, please anticipate delays wherever you are going. That means leaving a little early. Don’t be that person that leaves at exactly the same time that you always do and end up racing in and out of traffic until you spin out and we have to come rescue you. Don’t…be…that…person. Slow down. “I have 4 wheel drive/all wheel drive. My car can handle it.” All wheel drive doesn’t mean all wheel stop.

3.) DO NOT drive through standing water if you can not say with 100% certainty how deep it is. If we had a dollar for every time we’ve heard, “I thought I could make it,” well, we’d have a lot of dollars.

4.) Here’s another one we see a lot…turn your head lights on! If your wipers are on, even intermediate speeds, your lights must be on. “But officer, I have day time running lights.” That may be true, but that doesn’t mean that you have any lights in the rear of your vehicle and that can be just as dangerous.

5.) Have we mentioned not driving through closures or coned off areas of the road? We have? Ok, we’ll stop there.

6.) Last, but not least, if you see emergency crews on the shoulder, please move over one lane or slow down as you approach us. By slowing down we don’t mean drop it from 80 to 75, we mean really slow down. More of our officers are killed by traffic than anything else. We all appreciate a little room to work and not having to dodge 5,000 pound obstacles hurdling toward us at high speeds.

Again, thank you all for your patience with the closure. We would really like to thank you all for you patience while driving on the roads through Marin County. A little bit of patience goes a long way to keep us all safe.

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