A Spalding man caused a head-on collision and seriously injured another motorist when he tried to overtake a line of three cars, a court heard.
Cezary Purzycki, 44, was described as driving “far too fast” for the national speed limit when he hit a van which was travelling in the opposite direction on the A151 near Twenty.
Lincoln Crown Court heard a breath test at the roadside suggested Purzycki was a little over twice the limit for drink-driving.
But Hal Ewing, prosecuting, said a blood test taken some five hours later in hospital put him within the legal range.
In an impact statement which was read out in court the victim said his last memory before the collision was going through a chicane near the village of Twenty.
The van driver added that he had been unable to return to his former line of work because of the severity of his injuries from the collision.
Purzycki, of Gilbert Road, Spalding, admitted a charge of causing serious injury by dangerous driving.
Leanne Summers, mitigating, said Purzckyi had very little recollection of the crash and had spent a month in hospital as a result of his own bad driving.
“He can remember what he had eaten that day, and what he drank, but little more,” Miss Summers said.
Judge Simon Hirst adjourned sentence on Purzycki so an expert could be instructed to establish an accurate level of alcohol in his system at the time of the collision.
“I am adjourning sentence so that a back calculation can be made,” Judge Hirst told Purzycki.
Judge Hirst said it was clear that Purzycki had performed an obviously dangerous manoeuvre.
“If he was twice the legal for alcohol at the time then it could affect the type of sentence he receives,” Judge Hirst added.
Purzycki was granted bail until May 9 when he will be sentenced at Lincoln Crown Court.