Boston Police tweet he tried jumping from the bridge around 10 p.m. on Tuesday, but wound up in State Police custody instead. Local 718 tweets he tried jumping from the lower level.

Earlier:
Two men jump off the Tobin but survive.

Local 718 tweets that two people just jumped off the Tobin; they were fished out of the water.

UPDATE: The Suffolk County District Attorney's office reports the two men - one 35, from Revere and one 31, from Bedford, NH - jumped from the bridge's upper deck around 5:30 p.m. Troopers aboard a State Police patrol boat got the two out of the water and brought them to the North End Coast Guard station, from which they were transported to Mass. General. Both suffered serious injuries and have been unable to talk to investigators yet.

State troopers closed the rightmost inbound lane of the upper deck, where a car belonging to a Bradford relative was found. Traffic was slowed but not stopped during the response. Witness statements and additional evidence from the scene suggests that the men jumped in a shared suicide bid, but motive and execution remain under investigation by State Police detectives assigned to [DA Dan] Conley's office.

Matt Frank tweets it took him an hour and fifteen minutes to get from the loop to Chelsea across the Tobin tonight.

For almost three hours now, the northbound Tobin Bridge has been completely closed to traffic. Boston.com has been reporting "an emergency", and WBZ Traffic has been reporting "due to police activity".

Perhaps we're dealing with another Mr. Stuart here. That would explain the cloak of silence surrounding whatever incident has happened on the bridge.

Thanks to JohnWBZ's Twitter feed, you don't really have to watch Channel 4's report on the Tobin Bridge:

Ron Sanders is answering the question: When will all that construction be done on the Tobin Bridge? Short answer: never.

Because, really, what more do you need to know?

Herald: Massport looks to sell naming rights to the Tobin Bridge.

Earlier:
How to get the Zakim lights turned back on.

State Rep. David Linsky of Natick and some other MetroWest pols are making the proposal - and say it would raise enough to eliminate not just turnpike tolls, but tolls on the Tobin Bridge and the harbor tunnels. Don't worry: We'd still tax New Yorkers and, um, Connecticutters via tolls at the state lines (why not New Hamphirites and Vermonters, too, though?). Gov. Patrick recently sorta, kinda came out in favor of an increase.

Peter Cip shoots the Tobin from underneath during a snowstorm.

You'd probably have the same reaction as Donnie Wahlberg to the women who kept going up and down the Tobin - 36 times in all - to get a brief glimpse of him sitting in a car waiting to film a scene in the gritty "Bunker Hill" pilot:

The two women, Meghan and Michelle, also posted some photos and way more video, of course.

Sure is, at least in photos like this.