A workman was rescued by the fire brigade after plunging down a deep hole.
The road worker, who was not named, is in his 40s and was working at the M55 Eastbound link road on the Broughton roundabout, Preston when the incident occurred.
The fire service were called out at 9.15am on Monday and they managed to pull him out of the trench an hour later.
The man was taken to Lancaster Royal Infirmary by ambulance.
A spokesman for the fire brigade said: “A fire crew from Penwortham rescued a man from a three metre hole.
“They used an aerial ladder platform to get him out.
“The platform is normally used to rescue people from heights but the rescue cage can also be used below ground level.
“He was taken to hospital by ambulance.
“We have no indication as to what his injuries are.”