Road Rash is generally treated as a superficial burn (superficial to me, not to you).
With that in mind, here's what we do for management; aka Road Rash 101:
1) Get out the grit - this is going to hurt, but you want to make sure any road debris is gone otherwise, it can lead to infection or in the longer term an unwanted tattoo.
2) Keep it moist (not wet, not dry) - superficial wounds generally heal best in a moist medium (think antibiotic ointment like polysporin) instead of wet or dry. If the wound is open, fluid will drain to keep it moist and then some type of sealed dressing such as second skin or tegaderm is most practical. If there is a scab in place, leave it - it's doing the job of sealing the wound like a dressing would.
3) It's okay to get it wet - warm running water and non-irritating soap is okay for the wound as it will wash away dead skin cells, debris and old dressing remnants keeping the wound clean. The risk of infection for a superficial burn with running water is very low. Many of the big burns we treat are cleaned with regular Vancouver tap water, so it should be okay for you.
4) Once the wound is dry, it's usually healed - at that point start use moisturizing cream as the freshly healed wound does not produce the same oil that normal skin does. Also use sun screen liberally on a freshly healed wound as sun exposure may create more pigmentation in freshly healed wounds and make the area more obvious.
Dr. Sean Bristol