Fatal Two-Vehicle Crash Closes Oracle Road Near Biosphere 2 Science Campus in Southern Arizona

TUCSON, AZ — A deadly two-vehicle crash shut down Oracle Road, also known as State Route 77, near milepost 96 early Thursday morning. Arizona Department of Public Safety said the collision happened around 5:15 a.m. near the entrance to the Biosphere 2 science campus.

Troopers said the highway is completely blocked, and there is no estimated time for reopening.

Crash Details

According to DPS, one person died at the scene in one of the vehicles involved. That person was the sole occupant of the vehicle.

The other vehicle had an occupant who was taken to a hospital with injuries described as non-life-threatening.

Highway Shut Down

The crash is affecting a stretch of Oracle Road in Pima County, just north of Tucson near a major regional destination. Because the roadway is fully blocked, drivers in the area should expect delays and use alternate routes.

DPS has not released any additional details about what led to the collision.

What Officials Know

Arizona Department of Public Safety said troopers remain on scene and are handling the fatal crash investigation. The agency has not provided a reopening timeline.

Officials said they will share more information as it becomes available.

Travel Impact Ahead

The closure may create problems for commuters, visitors, and anyone traveling to or from the Biosphere 2 area. With no ETA for reopening, the shutdown could continue for some time while investigators work the scene.

Drivers heading through the region should check traffic updates before leaving.

TNSO covers California, Nevada, and Arizona as the story unfolds.