"They are for us to manage the traffic a little bit and alert the public to incidents or to road conditions ahead," said bridge engineer John Eppell.
The large, overhead, LED-lit signs are being installed now and testing should get underway sometime in January with the whole system up and running by the end of February. Each sign holds up to three lines of text.
The cost for the project is $2.2 million, which is being paid from toll revenue, Mr. Eppell said.
Managing traffic is an increasing concern for the bridge operators because the number of crossings is growing steadily, he said. During the work week, the two bridges handle more than 100,000 vehicles per day.
The idea for the signs was first floated as a way to prevent putting employees in danger on stormy, windy days. Currently workers dressed in highly visible jackets and using flashlights try to divert trucks away from the bridge when it is closed to high-sided vehicles, Mr. Eppell said.
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