From I-5 take Manthey Rd interchange, take W side frontage rd, go N 1 mi to N bank of San Joaquin River, plaque located at entrance to Mossdale Crossing Park and Ramp 2.0 mi N of intersection of I-5 and I-205,
CA ,
USA
California State Historical Marker
First known sail launch to ascend San Joaquin River from San Francisco landed here autumn, 1846. It carried 20 Mormon pioneers who founded New Hope Agricultural Project on Stanislaus. A yoke of oxen and span of mules were driven from Marsh's Landing (Antioch) by two men who followed a crude map drawn by Merritt the trapper. Two years later Doak and Bonsell operated here the first ferry on San Joaquin River.