ALAMEDA COUNTY (CBS SF) — An injury crash on northbound I-680 at the Sunol Grade in Alameda County created a massive traffic jam Friday night, according to authorities.

At around 6 p.m., CHP issued a severe traffic alert after the injury accident on northbound I-680 south of the Calaveras Road exit.

READ MORE: COVID Vaccines: Marin County Set To Expand Eligibility; Seniors Say Finding Appointments Still A Challenge

A motorcycle and a truck appeared to have been involved in the crash. There is no word yet on the extent of the injuries. The left lanes were blocked by CHP and emergency vehicles responding to the crash.

READ MORE: Stunning Yellow Superbloom Pops Up In Half Moon Bay - 'It's Perfect'

Motorists were advised to expect delays and to use alternate routes to avoid the area.

MORE NEWS: COVID: Santa Clara Supervisors Approve $5/Hour Grocery Worker Hazard Pay

All lanes were reopened shortly before 8 p.m., according to a Dept. of Transportation alert.