The most congested traffic corridors in Greater Boston

The downside of an improving economy and cheap gas? More congestion.
The downside of an improving economy and cheap gas? More congestion.
Craig F. Walker / Globe Staff photo

U.S. commuters spent 8 billion hours stuck in traffic in 2015, with the average commuter wasting 50 hours idling, according to a recent report from INRIX, a research firm that studies traffic patterns nationwide.

The report looked at traffic patterns based on speed data collected on over 1.3 million miles of urban streets and highways across the U.S. and performance data from the Federal Highway Administration.

Boston commuters had it worse than average. According to the report, the typical commuter in Boston spent 64 hours stuck in traffic last year, giving Boston the No. 7 worst traffic in the United States after Los Angeles, Washington, D.C., San Francisco, Houston, New York and Seattle.

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Who has it worst in Greater Boston?

INRIX also broke down the most congested traffic corridors in the Greater Boston region and even pointed out the dates and times when gridlock is worst.

The longest traffic delays in the Greater Boston area are experienced on an 11-mile stretch along I-95 between MA-2 in Concord and MA-28 in Reading. The worst delays occur on Fridays at 5 p.m. when travel speed is reduced to 15 miles per hour and the average delay is 37 minutes.

The report also highlighted several stretches along I-93, including from MA-37 in Braintree to the Columbia Road exit in Dorchester. The report found the worst day to travel this route is Tuesday at 7 a.m., with commuters experiencing an average delay of 30 minutes.

Another corridor along I-93 between Montvale Avenue in Stoneham and US-1 at Exit 27 experiences similar delays. The worst date and time to travel this stretch of highway is Thursdays at 8 a.m., with an average delay of 30 minutes.

Further north of Boston, traffic delays were not as bad in parts of I-93 in New Hampshire. The INRIX report found the I-93 corridor between the New Hampshire border and Pelham Road in Pelham, New Hampshire was worst on Fridays at 5 p.m. But commuters traveling this route through the Granite State experienced a relatively light delay of just seven minutes.

See a full list of the worst traffic corridors in Boston here.

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100 years of Boston traffic in photos

The good news

Although traffic is bad for drivers’ mental health, an increase in cars on the road has actually been connected to good news for their wallets.

The INRIX report indicates that low gas prices and an improving economy added to congestion in several major cities worldwide. Many major metro areas, including Boston, saw unemployment rates drop below the national average rate of 5.3 percent.

h/t: Boston Business Journal