ARKANSAW, Wis. — An Arkansaw woman was killed and two companions critically injured when a four-wheeler hit a gravel pile on a backroad construction zone and overturned. Jessica L. Bignell, 45, was ejected and died apparently instantly, Pepin County deputies said. The accident was a little before 9 p.m. near the intersection of County Road G and County Road Z northwest of Arkansaw. The UTV was in a convoy out for a moon-light adventure. Alcohol was a likely factor, deputies said. No one had fastened a seat belt. The convoy had passed several road-closed signs. Also ejected in the rollover were Richard L. Bignell, 47, of Arkansaw, who was airlifted 70 miles in critical condition to a St. Paul hospital, and Bradley T. Holz, 54, of Akansaw, who, also in critical condition, was taken 30 miles to an Eau Claire hospital. No one on the other UTVs was hurt.