Concrete ADA Ramps & Curb Ramps in Oregon

Quick Verdict

A concrete ADA ramp in Oregon has to meet strict federal accessibility standards: a running slope no steeper than 1:12, level landings at the top and bottom, edge protection, and — for curb ramps at sidewalks and parking lots — detectable warning panels (the bumpy truncated domes). These are not suggestions; commercial sites and public right-of-way work are inspected against them, and a non-compliant ramp gets torn out. Cost depends on the ramp size, the rise it has to overcome, landings, and railings. This guide covers the rules that govern an ADA ramp and how curb ramps connect to your sidewalks and lot.

What Makes a Ramp ADA-Compliant

The standards are specific, and getting any of them wrong fails inspection:

• Slope: the running slope cannot exceed 1:12 (one inch of rise per twelve inches of run). Flatter is fine; steeper is not.
• Cross-slope: the side-to-side slope must stay under about two percent so wheelchairs do not pull to one side.
• Landings: a level landing is required at the top and bottom, and at turns and intervals on long ramps, so users can rest and maneuver.
• Width: a minimum clear width so a wheelchair fits with room.
• Edge protection and handrails: required above a certain rise so users do not roll off the edge.
• Detectable warnings: truncated dome panels at curb ramps and transitions to alert people with vision impairments.

A licensed contractor builds to the current ADA and Oregon standards so the ramp passes. For where ramps fit with the rest of a site, see the concrete services overview.

Curb Ramps vs. Building Ramps

There are two common types and they have different details:

• Curb ramps transition a sidewalk down to street or parking grade at crossings and accessible aisles. They always need detectable warning panels and have to align with the crosswalk. These tie directly into your concrete curbing and sidewalks.
• Building/entrance ramps provide an accessible route up to a door where there would otherwise be steps. These need landings, often handrails, and frequently replace or sit beside concrete steps.

Planning the ramp with the surrounding curbing, sidewalk, and steps avoids a ramp that meets code on paper but does not connect properly to the route.

Detectable Warnings

The bumpy yellow (or contrasting) panels at the bottom of curb ramps are detectable warning surfaces, and they are required by ADA at the boundary between pedestrian and vehicle areas. They come as cast-in-place or surface-applied panels and must contrast visually with the surrounding concrete. Skipping them or installing them in the wrong spot is one of the most common reasons a curb ramp fails inspection. They are a required part of the work, not an add-on.

Cost Drivers

Driver	Effect
Rise to overcome	More rise, longer ramp, more landings
Landings	Each level landing adds area
Detectable warnings	Required panels add material
Handrails	Required above a rise threshold
Site access and demo	Tight or retrofit sites cost more
Permit	Right-of-way and commercial work

Industry Baseline Range: concrete ADA and curb ramps commonly run in the range of $1,500 to $5,000-plus each depending on size, rise, landings, and detectable warnings+. These are industry baseline ranges for planning only — actual pricing depends on lot size, access, condition, and current market conditions. Get a site-specific quote.

Current Market Reality

Detectable warning panels and ramp forming are specialty work, and retrofitting a compliant ramp into an existing site often means demolition and regrading. Because non-compliance can mean a tear-out or a complaint, building it right the first time is the cheapest path. Dry-season scheduling (May through October in the valley) keeps the pour on track.

Why Compliance Is Worth It

Beyond passing inspection, ADA compliance is the law for commercial and public facilities, and non-compliance opens you to complaints and liability. A properly built ramp also lasts — the same air-entrainment, sealing, and base-prep rules that protect all Oregon concrete apply, so the ramp survives freeze-thaw east of the mountains and clay movement in the valley. Doing it to standard protects both your visitors and your property.

The Bottom Line

An ADA ramp lives or dies on the details — slope, landings, width, edge protection, and detectable warnings. Get them right and the ramp passes and serves; get them wrong and it comes out. Plan curb ramps with your sidewalks and curbing, and entrance ramps with your steps, so the accessible route actually connects. For the broader concrete picture, start at our concrete services overview.

Cojo is CCB Licensed and Insured, based in Hood River, and builds compliant ADA and curb ramps across the valley, the Gorge, and the I-5 corridor. Explore our concrete services and request a quote — we will build a ramp that meets code and passes inspection.