The crash on the 18 Mile Stretch involved an overturned tanker truck that was leaking fuel, said Detective Angel Rodriguez, a Miami-Dade County police spokesman. It crashed at mile marker 116, which is on the Miami-Dade County end of the highway.
The crash on Card Sound Road happened at the south end of the Card Sound Bridde. A photo provided by the Monroe County Sheriff’s Office showed a jackknifed landscaping pickup truck with a trailer.
Most traffic heading in and out of the Keys flows on the 18 Mile Stretch of U.S. 1.
Card Sound Road is the other artery, which is a two-lane highway heading southeast from Florida City on the mainland, then southwest at a three-way intersection in north Key Largo.
This story will be updated as more information becomes available.