On this page are some ASD resources I have found useful so far. If you know of any I might have missed let me know and I will add it here. Thanks!
Salem Carousel - Children with disabilities can request a "disability pass" and get up to 5 free rides a day (accompanying parent also rides free)
A.C. Gilbert - Children with disabilities can request a "disability pass" and get in free
If your child with ASD is unable to walk you can request a Disabled Person Parking Permit
Families of Autism and/or special needs children (Facebook Group)
Autism Society of Oregon