Pima County issued a public health advisory for residents living within a one-mile radius of Tuesday's chemical spill on Interstate 10, advising them to seek medical attention if any breathing problems arise. Read more»

El Condado Pima emitió un aviso de salud pública para los residentes que viven dentro de un radio de una milla del derrame químico del martes en la Interestatal 10, aconsejándoles que busquen atención médica si surge algún problema respiratorio. Read more»

A $1.5 million grant from a new roadway safety program will fund a Pima County plan to reduce traffic deaths by planning quick, data-driven responses with the city of Tucson and other jurisdictions in the metro region. Read more»

After the Federal Highway Administration passed over Arizona’s bid for a $360 million grant to widen I-10 between Chandler and Casa Grande, Republican lawmakers are proposing not waiting for federal funds and instead pay for the project solely with state tax dollars. Read more»

Pima County will track air pollution in its most affected areas with the help of a $488,000 three-year federal grant. About 30 air pollution sensors will be set up at schools in the Tucson, Flowing Wells, Vail and Sahuarita Unified Districts, among others. Read more»

Tucson residents may have seen smoke rising from the Sweetwater Wetlands on Thursday as Tucson Water and the Fire Department performed a controlled burn to quell the mosquito population in the Northwest Side water treatment area. Read more»

Mayor Regina Romero told a Senate panel funding from the Bipartisan Infrastructure Law will be "critical" to Tucson’s ability in addressing PFAS cleanup, and cited a project to widen Interstate 10 and Amtrak service as other priorities. Read more»

The state of Arizona unveiled plans for the first stages of its electric vehicle infrastructure plan, which is set to bring roughly 30 charging stations to the state’s interstates in the coming years. Read more»

Trucks on the remaining 20 miles of two-lane interstate corridor between Tucson and Phoenix will have to move over and stay there, as ADOT installs "Trucks Right Lane Only" signs between Casa Grande and Loop 202 this week. Read more»

Building I-11 through Avra Valley would mean more costly suburban sprawl far away from where existing jobs and services are, along with environmental disruption, disturbing a wildlife corridor and the rural lifestyle of residents, and potential contamination of Tucson's water supply. Read more»

Three people were killed and five seriously injured when the driver of a SUV crashed into a semi-tractor trailer after refusing to stop for an Arizona Department of Public Safety trooper north of Tucson on Thursday morning, authorities said. Read more»

A drag racing tradition in Chandler’s Wild Horse Pass Motorsports Park that dates back to the 1980s is set to come to an end with an announcement Friday that a new overpass planned for the widening of I-10 will take the space that currently occupies part of the facility, Read more»

The state and feds have finished an environmental study that lays out a preferred route to connect Interstates 10 and 19. Just don't start planning trips around it quite yet. Read more» 1

Tucson residents may have seen smoke rising from the Sweetwater Wetlands early Wednesday as Tucson Water and the Tucson Fire Department performed a controlled burn of 17 acres in the area. Read more»

Work crews are going to expand Interstate-10 on the Northwest Side again, and the Arizona Department of Transportation is inviting the public to sound off about it. Read more»