Bubwith Bridge has closed until 5pm tomorrow (Friday)
It is so that urgent safety work can be carried out.
Engineers will install concrete barriers on the bridge and carry out road repairs.
The work is necessary because of poor weather over the past few days.
A temporary signed diversion will be in place, taking traffic via Holme On Spalding Moor, the A164 to Howden, A63 to Barlby, then back on the A613, and vice versa.
The car park and picnic area will also be closed for these two days.
The bridge was damaged in a road accident.
Work began earlier this month to strengthen the structure for winter – and further work is due to be carried out soon.
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