MADISON, Wis. (AP) — Flood damage to public roads, bridges, dams and other structures in southern Wisconsin this month is estimated at more than $15 million.

The Wisconsin State Journal reports (http://bit.ly/2eLAkrZ ) that the state Emergency Operations Center said Tuesday that Gov. Scott Walker has declared 20 counties to be in a state of emergency.

The damage to public infrastructure was worst in Racine County, with almost $4 million in damage, while Lafayette County reported about $3.5 million in damage.

Flood warnings remain in effect for several rivers, and severe thunderstorms are possible Wednesday.