San Quentin Avenue is an avenue in Western Bohan. According to the map, San Quentin is a part of a massive loop within Western and Central Bohan, and it's in between Butterfly and Rocket Streets. It begins where Butterfly Street ends, just north of the Northwood Bridge and Grand Boulevard, within Boulevard. Then, it travels through western Fortside, next to San Quentin station and then next to the Fortside branch of Burger Shot. Then it travels through western South Bohan and stops. At this point, the road splits into two, and becomes either an on-ramp for the East Borough Bridge or it joins to Rocket Street.
Being the north-south thoroughfare of western Bohan, its eastern counterpart is Leavenworth Avenue.
- Much like other streets within Bohan, it's named after San Quentin State Prison.
- Just off Grand Boulevard, San Quentin Avenue has the possibility of spawning multiple vehicles of the same type on each side of the road.