The Humber Bridgemaster, Peter Hill, says the bridge has seen "unprecedented levels of traffic" over the last two days because of roadworks on the M180.
He believes it is the first time the tolls have been suspended due to traffic congestion - but that includes last night's suspension between 18:00-19:00 as an emergency measure, due to the same congestion.
He says suspension means that traffic is now flowing freely over the bridge.
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