TEMPE, AZ - Authorities are investigating a serious multi-vehicle crash along the Loop 101 at the Loop 202 junction.
Raul Garcia of the Arizona Department of Public Safety said four vehicles were involved in the crash.
The Arizona Department of Transportation and Salt River Fire Department are also at the scene.
The northbound Loop 101 to Loop 202 Red Mountain ramp opened shortly after 3 p.m.
They had been closed for several hours Monday.
Information regarding possible injuries was not immediately available.