CHP - Grass Valley

09/03/2026

🌧️ RAIN IS ON THE WAY, NEVADA COUNTY! 🌧️

Mother Nature might be turning the sprinklers on! Rain is expected to move into our area this afternoon and continue into tonight.

That means it’s time to adjust the way we drive. 🚗💨

Slow down — wet roads mean less traction and longer stopping distances.
Turn on your headlights — make sure you can see and be seen.
Increase your following distance — give yourself extra time to stop.
Watch for standing water and never drive through flooded roadways.
And always wear your seatbelt

And remember: The speed limit is the maximum speed for ideal conditions. When the roads are wet, slow down and drive for the conditions.

The first rain after a long dry spell can make roads especially slick as oil, dust and debris mix with water.

Take your time, leave a little earlier, and arrive safely. 🌧️🚔

CHP Grass Valley — Slow down. Stay alert. Get there safely.

09/02/2026

08/31/2026

Highway 20 to I-80 closure has been extended through 6 am on Friday September 4.
Passenger vehicles use Highway 174 to Colfax.
Big Rigs use Highway 49 to Bell Rd in Auburn.

Help to share the news ... eastbound State Route 20 IS STILL CLOSED at the junction with I-80 in Nevada County. Crews anticipate reopening 6 a.m. Friday, September 4. Continue using Hwy 49 and Hwy 174 (passenger vehicles only) as a detour but be prepared for more lane closures once you connect to I-80.

Several projects are underway across the Sierra corridor. Details here, https://conta.cc/4qG5KQq

08/25/2026

Construction schedules are always changing and this project is no exception. New start time for the eastbound State Route 20 closure scheduled next week.

📅6 a.m. Tues 8/25 - 6 a.m. Sun 8/30

The closure is tentatively scheduled to be extended for the following week, reopening in early Sept. Keep track of any updates or check for real-time roadway information. https://conta.cc/4qF2Uev

08/23/2026

🚲🚨 Pedaling to School with the Nevada City Bike Bus! 🚨🚲

Friday was a great morning for the Grass Valley CHP to trade four wheels for two! Our officers joined the Nevada City Bike Bus for a fun ride to school—and we had a blast! 👮‍♂️🚴‍♀️

Of course, we couldn’t show up without talking a little bike safety along the way. From wearing a properly fitted helmet to being predictable, following the rules of the road, and watching out for vehicles, a safe ride is a successful ride.

But most importantly, we got to spend some time with our local kids and community, share some laughs, and remind everyone that getting to school safely can be just as fun as getting there!

Check out the video and see how much fun we had! 🎥👇

A huge thank you to the Nevada City Bike Bus for letting CHP Grass Valley join the ride. We’ll gladly pedal along anytime! 🚲💙💛

08/22/2026

Road Closure Update 8/21/2026 2112 hours

All road closures due to the Clover Fire have been lifted.

08/21/2026

Clover Fire - 8/21/2026 at 1635 hours

CHP has road closures at Clover Valley Rd. and Fay Rd. and Clover Valley Rd. and Rainbow Rd. These closures are expected to be in place through the evening.

08/21/2026

Use caution, please avoid the area. Hard closure Rainbow Rd at Carrie Dr in the Alta Sierra area.

3:40PM: All evacuation orders have been lifted. Road closures are now in effect at Clover Valley Rd. and Fay Rd. and Clover Valley Rd. and Rainbow Rd. These closures are expected to be in place through the evening. Please remain vigilant of emergency personnel in the area.

2:37PM: Hard road closures are in effect at Rainbow Rd. and Carrie Rd. and Clover Valley Rd. and Brewer Rd.

2:09PM: A temporary evacuation point for people has been established at Magnolia Intermediate School, located at 22431 Kingston Lane, Grass Valley, CA 95949. Children evacuated from Alta Sierra Elementary are being transported to Magnolia. A temporary evacuation shelter has been established for animals at the Nevada County Horseman, located at 10600 Bubbling Wells Rd, Grass Valley, CA 95945.

1:53PM: NCO-E050 is also now under EVACUATION WARNING (corrected)

- The Nevada County Sheriff's Office has issued an EVACUATION ORDER for zone NCO-E048 on 08/21/2026 at 1:45 PM for a wildfire in the area of Clover Valley Rd and Rainbow Rd. EVACUATE IMMEDIATELY. Check https://protect.genasys.com/ for updates and available shelter locations