Robert Davis, 74, in critical condition after his pickup crashes into guardrail and overturns on State Route 16 in Strafford County.

New Hampshire State Police say a 74-year-old man has suffered life-threatening injuries in a pickup truck crash on State Route 16 near Milton.

Robert Davis of Wolfeboro was heading southbound on Route 16 at about 8 a.m. Friday when he lost control of his truck, which struck a guardrail and rolled over.

Davis was eventually taken to Maine Medical Center in Portland. A hospital spokeswoman said Friday afternoon he had just been admitted; a condition report wasn’t immediately available.

Police said the crash is still under investigation, but it does not appear that unreasonable speed or alcohol are factors.