A big rig caught fire on Highway 17 Monday morning blocking several northbound lanes for hours.SANTA CRUZ, Calif. (KGO) -- A big rig caught fire on Highway 17 Monday morning blocking several northbound lanes for hours.A video sent to ABC7 News by a viewer shows the big rig dumping trash onto the highway.Lanes reopened with residual delays.If you're on the ABC7 News app, click here to watch live Report a correction or typo