Snow fell in the Sierra overnight, prompting road controls Monday morning. Here's a roundup:

* Interstate 80 in California: Chains required for all vehicles except 4-wheel-drives with snow tires west of Donner Lake Road, from mile post 9.1 69.2 in Placer county to mile post 9.1 in Nevada County.

* State Route 431 (Mount Rose Highway) from Galena Creek park to Incline Village: Chains or snow tires required.

* California Highway 89: Chains required for all vehicles except 4-wheel-drives with snow tires from mile post 21.4 in Alpine County to Mile Post 6.7 in El Dorado County.

* California Highway 88: Chains required for all vehicles except 4-wheel-drives with snow tires from mile post 66.7 in Amador County to mile post 6.1 in Alpine County.