Police say they have ended active searches for missing Beth Wilkinson.
However, regular searches will still be carried out "in key locations when conditions are appropriate".
The 16-year-old former Wolfreton School student was seen falling from the Humber Bridge on Thursday.
A spokesman said: "All reasonable searches for the girl have now been undertaken including extensive river bank and river searches involving numerous emergencies services, but she has not been located.
"She remains a registered missing person. The girl's family has been receiving support from specialist officers throughout the searches, to ensure they are aware of the activity undertaken as part of the missing person enquiries."
• Follow us on Facebook and Twitter
•Emergency services updates and breaking news
