Sadly, no. The close equivalent--USGS 7.5 minute, 1:24,000 "quad" maps--are often horrifyingly out of date. For example, one I use fairly often shows a pack trail instead of the major highway which supplanted it in the 1960s--this despite claims it was updated several times since by aerial photos and field checks.

I blame the privatization belief system, in which private profit is claimed to motivate superior performance in all realms--an obvious delusion. As our government has abdicated, businesses have in some cases moved in, but this only applies if you want to go where everyone else goes (and will pay for commercially-produced maps). In some areas other governmental agencies and non-governmental groups have stepped up, so there are often Forest Service maps, or maps produced by local interest groups like off-road riders, mountain bikers, hikers, or even local Chambers of Commerce.

In this specific case, my 10 second search shows city, county, and commercial websites dedicated to San Luis Obisbo bike routes and trails. In the absence of smartphone, I'd download and probably print off a few, since many won't even exist in paper form. I also see that something called Traillink looks much more useful than my accustomed Trailforks. I'd caution against relying on guidebooks unless truly desperate, since in my experience they either don't exist at all, or are so hopelessly out of date that they work much better as doorstops or boat anchors [<--joke].

Bike paths and trails are rapidly changing in many areas of this country. You'll probably want to distinguish between more relaxed bike paths--flat-ish, wide, smooth, graded paths of gravel or asphalt--and mountain bike trails. That's because these are somewhat separate constituencies, though both tend to be rapidly expanding. Cities and tourist agencies tend to stay up to date on bike paths; mountain bike organizations and shops on their trails. If interested in the latter, I'd suggest phoning (i.e., on an actual telephone) a local shop or two to ask what's available in print and website versions; if more the former, chances are pretty good that city or county websites will have what you're after. In either case, even online resources tend to lag ongoing improvements (and printed maps much more so), so definitely ask around once on the ground.

Edit to add: It's worth knowing that bike shops are all completely overwhelmed these days, and therefore sometimes difficult to engage--even when proposing to pay hundreds of dollars for repairs or parts, or thousands for new bikes. Stay patient.

I'm going to step back now so as not to crowd out anyone who might chime in with actual local knowledge--I live a couple of thousand km away and am seldom back in that area.