Parents-to-be have been reassured Lincoln County Hospital's maternity unit is operating as normal after it was briefly closed to new admissions.
Mums were diverted to other nearby facilities, such as Pilgrim Hospital, in Boston, on Sunday and Monday when the hospital's resources were stretched.
United Lincolnshire Hospitals NHS Trust said the decision was a normal course of action in the circumstances.
Women attending the unit in an emergency were still treated during the closure.
A spokesman for the trust said: "Every maternity unit has an escalation plan for occasions when the level of activity exceeds the level of staffing or when the unit is full.
"This can unfortunately happen from time to time as it is impossible to predict the exact dates and times at which ladies will require maternity services.
"Our escalation plan involves diverting ladies to the closest possible available unit at these times, which was the case between the morning of Sunday, December 11 and the afternoon of Monday, December 12 at Lincoln County Hospital.
"This was to ensure the safety and wellbeing of mothers and their babies."