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Driver killed in tunnel by falling conduit

Driver killed in tunnel by falling conduit

Driver killed in tunnel by falling conduit

(OP)
I use this tunnel on a regular basis and never thought twice about the overhead conduits or jet fans.

Link

This is on the Northeast Extension of the Pennsylvania Turnpike; north of Allentown.

RE: Driver killed in tunnel by falling conduit

Strange that is the only tunnel with conduit above the traffic. I'm surprised that they built that tunnel relatively recently (1991). On the main E-W stretch of the PA turnpike they have removed many of the tunnels I remember driving through as a kid.

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RE: Driver killed in tunnel by falling conduit

How does one remove a tunnel?

RE: Driver killed in tunnel by falling conduit

because of cooler surfaces, could this be fastener corrosion caused by condensation? [added] Big Dig?

Dik

RE: Driver killed in tunnel by falling conduit

Why most tunnels do not have any stuff hanging over the traffic lanes.

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RE: Driver killed in tunnel by falling conduit

Quote (3DDave)


How does one remove a tunnel?

I suspect that as highways are widened, that it's sometimes easier to simply reroute them.

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RE: Driver killed in tunnel by falling conduit

"Why most tunnels do not have any stuff hanging over the traffic lanes.

I seem to recall certain sections of the "Big Dig" has having HUGE slabs of concrete hanging from the roof, one of which fell and killed a motorist.

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RE: Driver killed in tunnel by falling conduit

I thought I'd commented on this... Due to wrong epoxy being supplied and creep due to rapid setting epoxies.

Dik

RE: Driver killed in tunnel by falling conduit

I thought the concrete sections falling in Boston were the decorative liner (tiles ?) of the top of the tunnel, not the structural tunnel liner itself.

Lights, vent fans and vent fan inlet screens, fire fighting water supplies? Haven't looked much up at the tunnel interiors when I go through them. The tunnels are washed regularly to clean deposits, so they get a lot of water and combustion by-products highly concentrated up there.

RE: Driver killed in tunnel by falling conduit

Quote (EdStainless)

Why most tunnels do not have any stuff hanging over the traffic lanes.

I think that should be "...do have stuff hanging..."

Link

RE: Driver killed in tunnel by falling conduit

I have read where the railroads were removing tunnels (because they were not tall enough) by open airing them. Sounded like a lot of dirt moving, but likely cheaper than increasing the head space.

If it's a sign in a tunnel or an over head sign on another part of a highway, what difference does it make? Except I can see the epoxy issue.

Then again, I haven't driven through many tunnels, as most highways here use cuts and not tunnels.

RE: Driver killed in tunnel by falling conduit

I used that tunnel coming back to Philly after my last job in PA. Sobering to know I drove under this same conduit not too many months ago.

RE: Driver killed in tunnel by falling conduit

The statement was that the other tunnels did not need to be checked because the conduit was above ceilings. I would want the ceilings checked, because as others said, the ceiling in the Boston tunnel fell.

RE: Driver killed in tunnel by falling conduit

(OP)
@racookePe1978 - and don't forget those huge jet fans down the middle.

The four vehicular tunnels in NYC don't have anything significant hanging from the ceilings. At the Queens-Midtown and Brooklyn Battery Unnels the ceilings were replaced post-"Big-Dig" but I believe the panels are supported on the walls.

RE: Driver killed in tunnel by falling conduit

If I remember correctly, the concrete panels in the Boston tunnel formed the bottom of the ventilation plenum (not just decorative). They were hung from the top of the tunnel structure. They had to be very heavy to resist the uplift forces generated when the ventilation fans kicked into high gear, the speed of the design airflow was massive.

RE: Driver killed in tunnel by falling conduit

DeFebo said the Lehigh Tunnel’s southbound tube is the only tunnel in the system in which electrical conduit is directly above drivers. In older tunnels, the pipes are located with ventilation equipment in a parallel utility tunnel above the roadway.

He said the tunnel’s most recent inspection occurred in September 2016. The agency in December sought bids to replace Lehigh Tunnel lights, with work expected to begin this spring.

If the Turnpike was planning to replace the lighting system this spring, it may be assumed that the lighting installation must have been in a very poor state of repair.

RE: Driver killed in tunnel by falling conduit

Or that they wanted to replace HID lighting with LED lighting.

RE: Driver killed in tunnel by falling conduit

Quote (Canuk65)

They had to be very heavy to resist the uplift forces generated when the ventilation fans kicked into high gear, the speed of the design airflow was massive.

My understanding, too... and the wrong epoxy was supplied... a quick setting type that had poor 'creep' characteristics.

Dik

RE: Driver killed in tunnel by falling conduit

Overdriveonline has photos on the page. There is a small hole at the top of the driver's side windshield.

RE: Driver killed in tunnel by falling conduit

When I was a kid, a person was killed at the local highschool football stadium when they ran off the road, hit the chainlink fence around the stadium, and the top rail on that fence speared the driver. I don't guess there's a good way to go, but some seem more gruesome than others.

And that reminds me of another incident, where my employer at the time had a trackhoe on the right-of-way to a local 2-lane highway. It was out by the fenceline, maybe 20' off the pavement. But in the middle of the night, somebody ran off the road and hit the counterweight on that trackhoe. When the workers got out there the next morning, they said there was still hair and blood on that counterweight.

RE: Driver killed in tunnel by falling conduit

Quote (racookpe1978)

I thought the concrete sections falling in Boston were the decorative liner (tiles ?) of the top of the tunnel, not the structural tunnel liner itself.

If they had lined the entire tunnel with $100 bills it would have been not only safer but cheaper.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

RE: Driver killed in tunnel by falling conduit

And that reminds me of another incident:

A German tourist was killed when a car jack his automobile ran over tore through the floorboard and impaled him, police said Monday. Dietrich Alt, 46, of Herzogenaurach Hammerbach, Germany, was driving west on Interstate 80 in northeastern Nevada with his wife and two children when the accident occurred Sunday, the Nevada Highway Patrol said. As the car drove over the jack, the tool flipped up and punctured the car's floorboard, tore through the driver's seat and impaled Alt through the groin area. Alt was able to pull off the road and remove the jack, but he collapsed on the highway and died.

http://articles.orlandosentinel.com/1991-08-13/new...

Sometimes people are just unlucky.

RE: Driver killed in tunnel by falling conduit

Was this an empty conduit? I don't see how an end of the conduit could drop very far if there were wires inside. I've seen conduits where lengths of it (20-30') were unsecured and they didn't fall, only drooped in the middle still basically hanging from the wires inside. I would hope that level of disrepair would be noticed.

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