The Alexander Street work zone, where two bridges are being replaced. (click to expand)
In late 2019, Alexander Street, one of the busiest roads leading into Princeton, was closed for a period of 6 months, to allow replacement of two bridges. Traffic counts show that Alexander St is used for over 7,000 motor vehicle trips per day, so many experts predicted that closing the road would cause major problems. The chief of police in Princeton said that roads would be “very congested…we want people to understand there are going to be delays during rush hour.” But just how bad did the delays get? We measured travel times before and after the construction project began, and found (perhaps surprisingly) that most Princeton commuters are experiencing delays of 3 minutes or less on trips into town during the morning rush hour.
