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A person was spotted on surveillance video riding a bike through the O’Neill Tunnel

Bicyclist rides through I-93 tunnel
Bicyclist rides through I-93 tunnel

Perhaps the MBTA was too crowded following the annual St. Patrick’s Day parade in South Boston?

A person was captured on video surveillance Sunday riding a bicycle along Interstate 93, through a portion of the Tip O’Neill Jr. Tunnel, before eventually ditching the bike and returning to the surface roads, according to officials from the Massachusetts Department of Transportation.

The cyclist was traveling on the on-ramp that carries traffic from South Boston and Congress Street to I-93 north and southbound, officials said.

In the 13-second video, the cyclist, who appears to be wearing a sweatshirt with the hood pulled up, is seen pedaling on the right-hand side of the road. At one point, a car has to quickly move into the left lane, squeezing between other vehicles, to give the person on the bike enough space.


A short clip of the cyclist trying to keep up with the flow of traffic was also posted Monday to Reddit Boston, a community message board. A timestamp on that video indicates the cyclist was on the thoroughfare just after 5 p.m. Sunday.

MassDOT staff did not receive reports about the incident as it was occurring. But a spokesperson from the agency said in an e-mail that the individual on the bike traveled about 1 mile before exiting the highway through a stairwell that connects back to surface areas. The bicycle was left behind.

This isn’t the first time a cyclist has used the expressway as a means for navigating the city.

In 2016, the bikeshare company Hubway (soon to be Blue Bikes) urged cyclists to stay off the highway after someone was recorded on video pedaling on the northbound side of the O’Neill tunnel.

The incident marked the fourth time in one year that a cyclist took to the busy roadway to get around. State officials called it “a serious safety issue for motorists and for cyclists.”


Steve Annear can be reached at steve.annear@globe.com. Follow him on Twitter @steveannear.