Parking Lot
ADA Parking Stall Dimensions in Oregon: Standard vs. Van
Cojo
May 30, 2026
6 min read
Accessible parking comes in two flavors: standard accessible and van-accessible. The difference between them is almost entirely dimensional, and getting those dimensions right is what separates a compliant stall from a violation. This page lays out the exact numbers for each, plus the one measurement that lives overhead and gets forgotten more than any other.
For the broader picture of counts, signage, and slope, start with our ADA parking compliance guide for Oregon. This page is the dimensions reference.
A standard accessible parking space pairs a parking stall with an access aisle.
| Element | Dimension |
|---|---|
| Space width | Minimum 8 feet |
| Access aisle width | Minimum 5 feet |
| Combined width | 13 feet |
| Space length | No federal minimum; typically 18 to 20 feet |
| Slope | Maximum 2 percent in any direction |
Van-accessible spaces accommodate vehicles with side-deploying wheelchair lifts and ramps, which need more room beside the vehicle. There are two compliant configurations.
| Configuration | Space Width | Aisle Width | Combined |
|---|---|---|---|
| Option 1 | 8 feet | 8 feet | 16 feet |
| Option 2 | 11 feet | 5 feet | 16 feet |
Van-accessible spaces carry a requirement that has nothing to do with paint: vertical clearance. A vehicle with a roof-mounted lift or a raised roof needs headroom, and the standard requires a minimum 96 inches (8 feet) of vertical clearance.
That clearance is not just at the space. It must be maintained at the van-accessible space, at its access aisle, and along the vehicle route a van travels to reach and leave the space. So a parking structure with a 7-foot clearance bar at the entrance cannot host a compliant van space inside, because the van can never reach it. Low canopies, signage, ductwork, and pipes along the drive route all count.
This is the requirement that surface-lot owners rarely think about and structure owners discover the hard way. If your van-accessible space is in or beyond a covered area, verify the clearance the whole way in and out.
Federal ADA does not set a minimum stall length, which surprises people. The standard governs width and aisle, and length follows local practice, typically 18 to 20 feet to match the rest of the lot's stalls. Oregon lots generally follow standard practice here.
The stall is striped with the same 4-inch lines used across the lot, plus the access aisle hatching and the International Symbol of Accessibility painted on the stall surface. The symbol on the pavement, the vertical sign at the head of the space, and the aisle markings together make the stall read as accessible from every angle.
Dimensions usually go wrong for one of a few reasons, and all of them are avoidable:
The single most reliable way to get stall dimensions right is to measure the lot before any paint is applied. A contractor who chalk-lines the layout against the actual measured space catches the squeezed stall and the wrong van configuration before they become permanent. Striping over old lines without measuring just preserves whatever was there, compliant or not.
These are general dimensional standards, and your lot's specific constraints, like existing curbs, islands, and entrance routes, affect how they apply. A site survey is the way to confirm the stalls fit correctly. Oregon adds its own layer of signage and code requirements on top of these federal dimensions, detailed in our Oregon ADA parking requirements page.
Understand what happens during an ADA parking compliance audit, common violations found in Oregon commercial lots, and how to prepare your property.
Complete guide to ADA parking requirements in Oregon, including space dimensions, van accessible standards, signage rules, and ORS 447.233 specifics for commercial property owners.
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