Zoom in on the epoxy failure.

Why is adding an attachment so hard?

Why not use metal/concrete posts to keep drivers at bay?

Wait, why are you picking on *my* SeeClickFix issue for a general city roadway policy discussion?

Anyhow, as I understand it, it's important for motor vehicles to be able to drive into the bike lane (over flexposts if necessary) in the event of an emergency (ambulance or fire truck needing to pass, e.g.). That reason seems sufficient enough. A roadway design that didn't permit that would probably require more space (which we never have), as well as more engineering time and harder approvals, and potentially more difficult legal review.

I could speculate on other reasons why rigid bollards are not favored, too.

Give it 3 months and you’ll understand why when there is not one bollard up left.

Respectfully, there have been plenty of flexposts in the city that have been up for more than 3 months, and I think you and I have both discussed some of them in other SeeClickFix issues. "Not one left" isn't what seems to happen.

Back to Main St.:

On the one hand, this is a straightaway without turning traffic, unlike, e.g. Mass Ave or Cambridge Street.
On the other hand, cars are probably likely to travel faster here.

Also, the flexposts aren't supposed to pull out like that. Like I said, I suspect this was a nacent epoxy curing/bonding failure. Vehicles are supposed to be able to drive over these things without this happening.

But we'll see what happens by Feb. 22, sure. (this Issue will probably be unreplyable at that point, however).

Thank you for reporting your concern to City of Cambridge via Commonwealth Connect. We have reviewed the information you provided our staff and will be investigating this issue further.

I went by again during daylight, and it appears that 2 or 3 of the flexposts that are adjacent to the missing one do not seem to be standing straight. It may well be that they are not properly bonded and should be reviewed. Thanks.

Thank you for contacting the Cambridge Traffic, Parking, and Transportation Department. We have retrieved the broken flex post are working with MassDOT and the contractor to remedy this issue. Given the cross slope of the roadway, the flex posts are not able to be vertical as this would leave their anchor cups protruding above the roadway surface. Because the post was leaning, the wind blew it over before the epoxy could dry. We anticipate this post and any others that have installation issues to be addressed in the Spring.

Steve, that doesn't make a lot of sense. The obvious solution is to install the epoxy threaded base in the roadway and wait for the epoxy to cure overnight before screwing in the post.

Am I missing something?

Hi John- The installation needs to follow the manufacturer's directions, which state that they are installed together. We will be looking at this in the upcoming months to make sure it was done correctly and will remedy the issue if need be. https://www.pexco.com/pdfs/traffic-products/channelizer-posts/EAC/city-post-install-2016-both-anchor.pdf