MADISON, Wis. (WTAQ) - Wisconsin’s frozen road law is going into effect Wednesday in central and southwest areas, and Thursday in the southeast. It allows heavier loads for trucks that carry forest products and highway salt. It took effect last month in northern Wisconsin. And it now applies on state and federal roads between Highways 10 and 33 in the middle part of the state, and west of Highway 78 in the south. Southeast Wisconsin will be included starting at 12:01 a.m. Thursday. The frozen road law does not apply on the Interstates, except for I-39 from Portage to Wausau. The heavier weight limits will be allowed until early March, unless the roads start thawing earlier.