ADA Parking Striping in Wilsonville, Oregon: Bringing Your Lot Up to Code

Restriping Your Wilsonville Lot for ADA Compliance

A restripe is the single best moment to fix an accessible-parking layout that drifted out of code. Once the old lines fade or a fresh sealcoat wipes the lot to a blank slate, you are paying for paint anyway — so it costs little extra to lay the new lines in the right places, at the right widths, with the right markings.

Wilsonville sits at the south end of the Portland metro along the I-5 and Boones Ferry corridor, where the city's mix of office parks, the industrial blocks off Parkway Avenue, Old Town retail near the Willamette, and big-box centers near the freeway interchange all rely on parking that has to serve commuters, shoppers, and freight. Lots here see heavy turnover and harsh winter wet, which means striping fades and accessible markings lose definition faster than many owners expect. When you restripe, treat it as a compliance reset rather than a like-for-like repaint.

This guide walks Clackamas County property managers through what an ADA-correct restripe actually involves. For the full statewide framework, start with our ADA parking compliance in Oregon pillar, then use the specifics below for your Wilsonville lot.

What "Up to Code" Means for a Restripe

Refreshing faded lines is not the same as bringing a lot up to code. A compliant restripe has to land four things correctly at the same time.

Accessible Space Count

Under the 2010 ADA Standards, the number of accessible spaces scales with total lot size — roughly 1 accessible space for every 25 total spaces up to the first 100, then a sliding scale above that. A 40-space Wilsonville office lot needs at least 2 accessible spaces; a 120-space retail lot needs 5. At least 1 in every 6 accessible spaces must be van-accessible (rounded up). Many older lots were striped before van ratios tightened, so a restripe is the moment to add the missing van stall.

Stall and Access Aisle Dimensions

• Standard accessible stall: minimum 8 feet wide, paired with a 5-foot access aisle
• Van-accessible stall: 8 feet wide with an 8-foot access aisle (or 11 feet wide with a 5-foot aisle)
• Access aisle: marked with diagonal hatching, flush with the stall, no parking permitted

The access aisle is where most restripes go wrong. Owners repaint the stall but skip the hatching or let the aisle shrink below width. Our ADA access aisle striping spec covers the hatch pattern, the "NO PARKING" text, and shared-aisle rules in detail.

Surface Slope

Accessible stalls and their aisles must not exceed 2 percent slope in any direction. Paint cannot fix grade. If your Wilsonville lot has settled near a catch basin or along a curb line, the restripe may reveal that the only compliant spot for the accessible stalls is somewhere else entirely. Verify slope before you commit the layout.

Symbols and Signage

Each accessible stall gets the International Symbol of Accessibility painted on the pavement, plus a vertical sign mounted with its bottom edge at least 60 inches above grade. Oregon requires a supplemental plate stating the fine amount for unauthorized parking — a detail that trips up out-of-state contractors. Van stalls add a "Van Accessible" plate. See the current 2026 ADA striping requirements for the full marking and sign checklist.

The Wilsonville Restriping Sequence

A compliant restripe follows a deliberate order:

1. Layout audit first. Before any paint, confirm the existing count, dimensions, aisle widths, and slope against current standards. A like-for-like repaint just locks in old mistakes.
2. Surface prep. Clean the asphalt, remove loose debris, and address any cracking or oil saturation in the accessible footprint. Wilsonville's wet season leaves grime that paint will not bond to.
3. Re-layout. Snap fresh chalk lines for the corrected accessible stalls and aisles — this is where you fix counts and add the van stall.
4. Paint and stencil. Apply traffic paint, the accessibility symbols, hatching, and aisle text.
5. Signage and verification. Confirm sign heights, the Oregon fine plate, and that every accessible route connects to the building entrance.

Timing a Restripe in Wilsonville

Traffic paint needs dry pavement and temperatures generally above 50°F. In Wilsonville that points to late spring through early fall. The wet months from November through March are poor striping weather, and freezing nights in the deep of winter slow curing. Many owners pair a restripe with a summer sealcoat so the fresh, dark surface gives the new accessible markings sharp contrast and longer life. If you are restriping after sealcoat, allow the sealer to fully cure first.

Common Restripe Mistakes on Clackamas County Lots

• Repainting the old count. If the lot grew or the van ratio changed, a faithful repaint stays non-compliant.
• Skipping the access aisle hatching. A stall without a properly marked aisle is not an accessible space.
• Wrong van aisle width. An 8-foot stall needs an 8-foot aisle — not the 5-foot aisle used for standard stalls.
• Ignoring slope. Crews sometimes stripe the most convenient corner, even when it ponds water or exceeds 2 percent.
• Forgetting the Oregon fine plate. Federal-only signage misses an Oregon-specific requirement.

A restripe that corrects these is the cheapest path to compliance because the labor and mobilization are already on site.

How Wilsonville Compares to Nearby Cities

Striping a lot to ADA layout follows the same federal and Oregon rules across Clackamas County, whether you are in Wilsonville, Canby, or Happy Valley. What changes locally is lot age, terrain, and traffic. Wilsonville's freeway-adjacent commercial lots tend to be larger and higher-turnover than small-town main-street lots, which means more accessible stalls and more wear on the markings. For pricing context on a standard restripe in town, see our parking lot striping in Wilsonville guide. The accurate way to scope an ADA restripe is always a site visit, since count, slope, and signage are lot-specific.

This article offers general guidance, not a legal determination. Because ADA layout depends on your exact stall count and grades, we recommend a professional survey before finalizing any restripe.