9:26 PM: What started as a heavy-rescue call and became a hazmat call is blocking 1st Ave. S. south of SW Kenyon [map]. It’s a tanker truck that went sideways but police tell us nothing spilled and no one was hurt. A tow truck has been summoned.

9:55 PM: Added a photo showing the truck on its side right by the gas station that’s there by the freeway ramp.