Remember last year when the state used traffic cones to mark off some bike lanes on the Mass. Ave. Bridge and somebody didn't like them and tossed them onto the frozen Charles River? A roving UHub photographer discovered today that some low-energy bike-lane hater tried to replicate that, only gave up after just one cone.

Ladybugs_Leaf spotted these flags placed along the Massachusetts Avenue Bridge today and wondered what they're for.

Adam Balsam posits they're memorials for the bike-lane-marking traffic cones that somebody tossed off the bridge in January.

Take the Mass. Ave. Bridge enough and you're bound to see something unusual. For Swimman79 this afternoon, it was a mattress blocking most of the sidewalk on one side.

The Boston-bound side of the Massachusetts Avenue Bridge was shut this evening after a man jumped off and first responders rushed to the scene, as MC shows us. State troopers were able to rescue him from the water and hand him over to EMTs for transportation to a local hospital.

The Boston Fire Department reports Boston and Cambridge firefighters converged on the Massachusetts Avenue Bridge around 7:30 a.m. on reports of a person in the water. John Duffill reports they found the person's body.

Not because he's Zoolander handsome or anything, but because police helpfully shut down the Mass. Ave. Bridge from Boston into Cambridge this morning so he could film a scene there for a movie.

Oliver Smoot, the man who became a unit of measurement, was back in town today to serve as grand marshal of the 100th anniversary of MIT's moving day - the celebration of the school's moving from the Back Bay to Cambridge.

RoadTrip New England snapped him as he rode past the markers bearing his name on the bridge.

Curt Nickish caught him being measured to make sure he still had an ear (the bridge being, of course, 364.4 smoots long, plus or minus an ear): Read more.

A 45-year-old Harvard man jumped off the Massachusetts Avenue Bridge shortly before noon. According to the Suffolk County District Attorney's office:

Troopers were able to bring the man from the water into a State Police vessel and transport him to a nearby dock, from where he was taken to Boston Medical Center. Based on the facts and circumstances available thus far, the incident does not appear to be the result of criminal conduct and the man is expected to survive.

Upset over Uber, natch. Shortly before 9 a.m., cab drivers blockaded the Mass. Ave. bridge into Cambridge. "Completely gridlocked traffic downtown," Christine Peterson reports.

Read more.