Skip to main content

Engineering for Accessibility

A transportation system that provides full accessibility results in a high quality system for all users. Accessible infrastructure has been linked to increased business opportunities, social development health benefits, and increased independence among community members.

Accessible design practices incorporate the needs of people with disabilities into the design and development of public infrastructure, allowing facilities to be accessed independently by people with disabilities. ​

The Americans with Disabilities Act requires pedestrian infrastructure be accessible and usable by people of all abilities. Some elements of an accessible pedestrian route include:

  • Sidewalks,
  • Curb ramps,
  • Crosswalks,
  • ​Pushbuttons at traffic signals, and
  • Accessible parking.

ADA requirements are integrated into all Oregon Department of Transportation standard drawings, details, specifications and design manuals. In addition, ODOT prepares guidance and element designs to maximize accessibility in new construction and existing facilities. Technical guidance documents clarify when, where, and how to provide access in the many unique situations found along the state highway system.​

Project Elements that Impact ADA Accessibility

For each project element, technical requirements are provided to guide the design of accessible public facilities.

​When curb ramps are included in a project, ODOT requires several processes to ensure the constructed curb ramp will comply with accessibility requirements.

  • Design shall meet criteria in the ADA Curb Ramp Design Checklist,
  • Design detail sheet shall be provided for each corner, and
  • Constructed curb ramps must be inspected using an ODOT curb ramp inspection form to document compliance with accessibility requirements.

Technical Requirements

Standards

External References

The ADA requires that curb ramps be addressed when street pavement is altered with resurfacing. Curb ramps must be placed where they are needed or replaced if they are not compliant.

Technical Requirements

The following documents explain overarching project requirements, clarify ADA obligations for paving or resurfacing projects, and detail requirements for ongoing maintenance.

An accessibility evaluation of bridge sidewalks is required when:

  • A bridge is constructed;
  • A sidewalk is added to an existing bridge; or
  • The scope of work is classified as an "alteration."

Technical Requirements

The following documents explain requirements related to bridge sidewalk and curb ramp elements.

Standards

​Per Oregon statute, every intersection is a pedestrian crossing unless the crossing is closed by official action.

Standards

​Accessible pushbuttons are required when traffic signal work is considered to be an alteration.

Technical Requirements

The following documents explain overarching project requirements, request evaluation requirements, and maintenance work requirements.

  • TR16-01(B) - Traffic Signal Design Manual - Pedestrian Signal Equipment Layout for 2017 Edition, Chapter 5.4
  • TR16-02(B) - Traffic Signal Policy and Guidelines Manual - Audible Pedestrian Signals, ADA Updates for 2017 Edition
  • MG 144-03 - Traffic Signal Maintenance and Americans with Disabilities Act

Standards

​Accessible parking spaces must be addressed when a project alters a parking lot or on-street parking that is metered or marked.

If sidewalks and pavement are altered, the parking access aisle must also be addressed.

Standards

A Temporary Pedestrian Accessible Route is a required component of every Traffic Control Plan.

The TPAR details how pedestrians will be directed through or around a work zone. The level of detail required for the TPAR depends on the complexity of the project and the volume of pedestrian traffic.

Technical Guidance

  • TSB17-01(D) - Temporary Pedestrian Accessibile Route Plans Required for Work Zones

​Standards

References

  • American Traffic Safety Services Association Pedestrian Accommodation in Work Zones
  • Transit & Taxi Service Finder – Transit services with bicycle and wheelchair accommodations

​ODOT ensures that ADA processes are followed on federal-aid local projects, including for those certified local public agencies that do not have ADA certification from FHWA and ODOT.

Technical Requirements

  • LPA 101-19 - Americans with Disabilities Act Design Exceptions and Inspections

Curb Ramp Inventory and Inspection Resources

ODOT maintains an inventory of curb ramps on state highways. The inventory data is collected from on-site visual inspections conducted statewide by certified inspectors.

ODOT provides training for ADA curb ramp inspectors. The training presentation provides information on the equipment, measurements and procedures required to conduct inspections.

Curb Ramp Inspection Presentation

Curb Ramp Inspection Forms

Select the form that best suits your project:​

Inventory information includes the functional and physical condition of a given curb ramp, and if the ramp meets ADA standards.

  1. Visit the TransGIS website.
  2. Under the "layers Catalog" tab, select "Roadside."
  3. Select the "ADA Ramps"​ box.
  4. Click "Apply" at the bottom of the "Layers Catalog" window.
  5. Zoom into an area of interest by double-clicking the area or using the scroll wheel on your mouse.
  6. Click the blue information icon at the top of the window and click on a curb ramp marker.
  7. Information about the selected curb ramp will appear in a secondary window.

TransGIS mapping tool

Contact the Roadway Engineering Unit

4040 Fairview Industrial Drive SE, MS 5
Salem, Oregon 97302
Phone: 503-986-3568
Fax: 503-986-3749

Your browser is out-of-date! It has known security flaws and may not display all features of this and other websites. Learn how

×