Rebuilding a railroad bridge

Article Abstract:

Engineers constructed a twin side-by-side trunnion bascule river crossing as replacement for the Peck Movable Bridge and Bridgeport Viaduct. The bridge is a four-track rail line for Metro North Railroad, Amtrak and Conrail over Connecticut's Pequonnock River. It was constructed in 1904 and the Scherzer rolling-lift bridge section had become unreliable through the years. The drawbridge section remained open for more than 12 hours in 1985 and caused major service disruptions. The Metro North commission decided in 1987 that the bridge should be repaired and awarded the contract to Balfour-Beatty in 1993.

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Christopher LaCroix

Aug 29, 2010 @ 1:13 pm

As a member of the team to rebuild this bridges north and south tracks, my company LaCroix Construction working under New England Railroad construction, surveyed,labeled, and removed in order everysingle existing railroad tie over the viaduct system built in 1904 using what ever steel they could get their hands on. Our challenge was to re-use through creating superelevation on the existing ties to change the approach to the temporary run around. We worked outside due to the overwhelming fumes from the kreasol soaked existing ties which also wore carbide like butter when it came to the cutting tools. Through one of the harshest winters in then recent history we put the temporary approach in working order in just about one year. Engineers frequently told me of exeeding the 15 MPH approach and run around speed limit by almost double.

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Parallel crossing doubles Chesapeake Bay Bridge-Tunnel

Article Abstract:

Engineers are busy completing the second set of bridges and trestles at Chesapeake Bay Bridge-Tunnel. The $200-million construction program, called the Parallel Crossing Project, would double the number of north- and southbound roadways in the bridge when completed. The new lanes are being built in a parallel structure, with one lane in each direction, instead of having two lanes in the same direction in each structure. More than 12 mi of low-level trestles supported by 2,580 concrete piles would be used on the project.

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