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Bridging the gap: Teaching bridge safety to next generation of railroaders

November 12, 2018 By David Tenenbaum

As 20 adult students, clad in dazzling safety vests, clambered over, under and across an old railroad bridge near Oregon, Wisconsin, two experienced railroad bridge inspectors brought the steel structure to life, with an inch-by-inch inspection of its ability to carry heavy freight cars safely.

Unlike highway bridges, railroad bridges must be inspected every year. Problems can be hidden by soil, structure or inadequate inspecting tactics. Many surface slowly, taking decades to reach a threatening point.

Photo: Worker in hardhat crouching and looking down track

The eyeball is a fast substitute for high-tech equipment in checking track alignment. Kevin Halpin pays close attention to deviations at the end of the bridge. All photos: David Tenenbaum

Starting from the top, and mixing eyeballs with iron-age inspection tools, the instructors proffered decades of experience to their successors.

The outdoor classroom included five students from Wisconsin and 15 others from Alaska, California, Florida and the east coast. Only a few places teach railroad bridge inspection, notes course director Dave Peterson of Engineering Professional Development at UW–Madison.

When they depart Madison, these professionals will be in a better position to ensure safety on rails that carry passengers, freight and flammable or toxic chemicals. Wisconsin alone has 3,387 miles of railroad track, and approximately 2,000 bridges. Nationally, 1,250 derailments happened in 2017, but almost none are due to bridges, Peterson says.

The course is part of the broad and deep offerings from EPD, which lists more than 200 courses covering everything from refrigeration and landfill design to lean manufacturing and leadership, and serves about 7,000 students per year.

Photo: Shane Anderson wearing a hardhat

Shane Anderson, a laborer at E80 Plus Contractors in DeForest, Wisconsin, attended the bridge course with an eye toward earning a promotion to supervisor.

Photo: Luke Voss wearing a hardhat

Luke Voss, a project engineer with E80, supervises railroad bridge projects across southern Wisconsin. Voss found a lot to learn from the course’s highly experienced instructors.

EPD, now a branch of the UW–Madison College of Engineering, began 60 years ago with a focus on technical skills necessary to keep professionals, including many who graduated decades before, abreast of the latest technology.

The first bridge on the afternoon dance card is a steel structure, built by the Chicago and North Western in the village of Oregon in the early 20th century. The bridge, now out of service, is owned by the Wisconsin and Southern Railroad.

There’s a lot to see and evaluate, even with the “simple” but critical element — the ties:

  • Are the ties spaced too far apart?
  • Are the plates holding the track to the ties shifting under load?
  • Some ties have started to split. How many? How much?
  • Are the spikes tight, loose or missing?
Photo: Man in hardhat under rail ties on bridge

Railroad bridge inspection course instructor Pete Schierloh points out features on a steel bridge in Madison.

To check the substructure, instructor Pete Schierloh, a project engineer with SW Bridge Engineers in DeForest, starts with the concrete foundation. One section is obviously a replacement, but the older section, nearby, shows surface degradation. To determine if the soft spot matters, Schierloh whacks it with a rock hammer and listens. Only a few areas return the deep “thunk” that reveals rotten concrete.

Looking up, Schierloh looks at the main beams’ bearing points, and the “how deep?” question resurfaces in the form of rust. As it seems superficial, a repair order is not indicated.

Photo: Inspector in hardhat pointing out damage

Kevin Halpin points to evidence of water toward the bottom of the Bram Street bridge — something that must be watched in future inspections.

Everything needs to be seen, noticed, recorded. This bridge was built to serve two tracks, until a giant cutting torch severed one half in the distant past. That explains why one bridge beam is so much beefier than the other, since it needed to support a rail on each track.

Evaluating the stone arch bridge at Bram Street on the south side of Madison, Halpin is mostly upbeat, though he does object to an overgrowth of weedy trees, noting that the roots may shift the large stones. Beyond a few dislodged stones, however, the masonry is mostly solid.

At a wooden span crossing Wingra Creek, Schierloh strikes the ties with a three-foot steel rod, noting that occasional “thunk.”

Photo: Lucky Lawani, in a hardhat

Lucky Lawani, a track engineer at the Port Authority Trans-Hudson (PATH) line, plans to apply what he learned in Madison to the heavily used commuter railroad’s many bridges in New Jersey.

Photo: Man in hardhat standing under rails

With timber bridges like this one on Wingra Creek in Madison, one major question concerns the condition of the wood below the water line. Pete Schierloh inspects.

As technology grows and the economy becomes more dependent on it, the need for high-quality courses like this will grow. An aging workforce is a key motivator for the dozen-or-so railroad courses taught annually at EPD, says Peterson. “We are training the next generation of railroaders. There’s a huge gap between people retiring, and the younger professionals in the business, because there was a 20-year period when there was essentially no hiring of technical people in the railroad business.”

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