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A tractor-trailer fire closed northbound Interstate 19 for four hours Tuesday night; there were no injuries. Arizona Department of Public Safety spokesman Bart Graves said the fire began under the ... Read More

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The Arizona Department of Transportation has reported that the northbound lanes of Interstate 19 near Green Valley have now been reopened to traffic. Read More

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An interstate will barely even fit in the Avra Valley. To attempt to squeeze one in there would likely ruin one National Park, one National Monument, one county park, one ... Read More

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Gov. Katie Hobbs won't use her power to direct the state Department of Transportation to scrap a proposal that could put a new interstate highway next to Tucson Mountain Park ... Read More

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Interstate 19 runs 63 miles from Nogales to Tucson. That is 102 kilometers, which is important because I-19 is the only metric interstate in the nation. Read More

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Interstate 19 runs 63 miles from Nogales to Tucson. That is 102 kilometers, which is important because I-19 is the only metric interstate in the nation. Read More

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TUCSON, Ariz. (KGUN) - Former KGUN 9 traffic reporter Allen "Big Al" Kath points out a large sign on a recent drive along Interstate 19. He reads it out loud: "Metric signs in use on I-19. Read More

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Interstate 19 runs 63 miles from Nogales to Tucson. That is 102 kilometers, which is important because I-19 is the only metric interstate in the nation. Trump judge faces a 'serious problem ... Read More

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Gov. Katie Hobbs won't use her power to direct the state Department of Transportation to scrap a proposal that could put a new interstate highway next to Tucson Mountain Park and through a special ... Read More

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Heavy traffic and long backups were expected on portions of Interstate 17 this weekend due to closures issued by the Arizona Department ... 3 variant of COVID-19 ADOT faced widespread outrage ... Read More

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A Tucson motorcyclist suffered non-life threatening injuries Sunday night when the motorcycle and a crossover-type SUV with five Sahuarita residents inside it collided on northbound Interstate 19 betw ... Read More