Lockhart Canyon is just about the only place along the Lockhart Basin
road that allows bikers access to the Colorado River shoreline.
You can use this spur to extend your Lockhart Basin
ride, or, with pre-arrangements, possibly to meet up with a river trip down to the Confluence, or a jet boat for a quick trip back to Moab. This canyon is also a good candidate for some sort of bike/packraft adventure, possibly exiting via Lathrop Canyon
and the White Rim Trail
; via Red Lake and Elephant Hill; or even via Spanish Bottom and the Doll's House. You could also exit here after packrafting from Potash.
Since it runs in a large desert wash, expect sand on this route! If you happen to hit the road in good conditions, you'll wonder what all the fuss is about. But if you catch it dry and churned up, you'll likely find it completely unrideable.
Maintenance on this road is sporadic, so your shuttle vehicle may have even more trouble, depending on the recent flood history.
This canyon is high adventure in a very remote place--be sure you are well-equipped and have a plan before heading off glibly down the road! Once at the river, quicksand and thick brush may limit your access to the water.
On the topic of water, it's never a good idea to plan on using the river water as your drinking supply. It's often too silty and will clog any filter unless you settle it overnight. Side canyon water is often minerally and hard to digest even after filtering. Bring all the drinking water you need with you, and some fresh iodine tabs just in case things go pear-shaped.