Media Center


ADOT News Release

For additional information:

ADOT Media Relations



ADOT installs new sensors to help track freeway traffic flow

Overnight closures allow work to take place along I-17
May 16, 2017

PHOENIX – Working overnight along stretches of Phoenix-area freeways, Arizona Department of Transportation crews are moving closer to completing installation of new in-pavement sensors that monitor traffic flow.

TrafficFlowYou can expect overnight closures along Interstate 17 over the next several weeks as crews work to complete the project by this summer.

In addition to helping ADOT track freeway conditions, these sensors provide the data used to estimate the travel times that drivers see on message boards above freeways. The data also helps ADOT and the Maricopa Association of Governments, the regional transportation-planning agency, make decisions about future freeway improvements.

Using electronic wires embedded in the pavement, the sensors have been used along many Valley freeways for years. The current project is installing additional in-pavement sensors as a more reliable replacement for acoustic devices that are mounted on poles.

This project is one way ADOT is working toward the agency’s continuous improvement goal of reducing congestion on freeways in metro Phoenix.

After installing in-pavement sensors on Interstate 10, US 60 (Superstition Freeway) and State Route 51 (Piestewa Freeway) in recent months, ADOT will address Interstate 17 over the next several weeks, starting with the southbound lanes between Peoria Avenue in north Phoenix and 19th Avenue south of the downtown area.

This week, overnight closures of southbound I-17 stretches are scheduled through Thursday night, May 18, between Peoria Avenue and Bethany Home Road for sensor-installation work. Southbound I-17 also is scheduled to be closed this weekend between Indian School Road and Van Buren Street for rubberized asphalt paving.

When the sensor-installation project is completed, more than 85 locations on Phoenix-area freeways will have new traffic-flow sensors.



The Arizona Ombudsman – Citizens Aide helps you resolve ongoing issues with State Agencies.

Civil Rights

Pursuant to Title VI of the Civil Rights Act of 1964, the Americans with Disabilities Act (ADA) and other nondiscrimination laws and authorities, ADOT does not discriminate on the basis of race, color, national origin, sex, age, or disability. Persons that require a reasonable accommodation based on language or disability should contact ADOT’s Civil Rights Office at Requests should be made as early as possible to ensure the State has an opportunity to address the accommodation.

De acuerdo con el Título VI de la Ley de Derechos Civiles de 1964, la Ley de Estadounidenses con Discapacidades (ADA por sus siglas en inglés) y otras normas y leyes antidiscriminatorias, el Departamento de Transporte de Arizona (ADOT) no discrimina por motivos de raza, color, origen nacional, sexo, edad o discapacidad. Las personas que requieran asistencia (dentro de lo razonable) ya sea por el idioma o discapacidad deben ponerse en contacto con la Oficina de Derechos Civiles de ADOT en Las solicitudes deben hacerse lo más antes posible para asegurar que el Estado tenga la oportunidad de hacer los arreglos necesarios.