The westbound on-ramp from Grant to Interstate-10 has been closed by the Department of Public Safety as a truck was leaking gasoline.
The Tucson Fire Department says more than 100 gallons of diesel leaked onto the road from the ruptured fuel tank.
Tucson Fire says the leak from the semi has been stopped and the diesel has been cleaned.
The west-bound on ramp will remain closed until semi truck is towed away.
Stay with Tucson News Now as we look further into this story.
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