A fast-moving fire in the area of River Road and McHenry Avenue along the Stanislaus River in Escalon prompted closure of the McHenry Avenue bridge that links San Joaquin and Stanislaus counties at midafternoon Thursday. Escalon, Salida, Waterloo-Morada, Collegeville, Ripon, and Lathrop-Manteca were among the agencies responding to the scene in the effort to contain the wildfire. One witness at the scene said the fire appeared to have started off River Road, in the area between the Escalon Animal Shelter site and Morrill Industries.