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Accidents Raise Questions About Bridge Anti-Ice System - Valley News Live - KVLY/KXJB - Fargo/Grand Forks

Accidents Raise Questions About Bridge Anti-Ice System

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Roads are still slick as emergency crews responded to a 12-car crash on the Red River bridge on Interstate-94 the morning of Dec. 6.

There was a multi-car accident in the same location Dec. 5, which has raised questions about the anti-ice system on the bridge.

 

MNDOT handles the west-bound lane where the accidents occurred and NDDOT handles the east-bound lane. The two states share coverage of the bridge crossing the border. 

MNDOT officials say the system is meant to be first and foremost a preventative measure for ice formation, not a treatment for existing ice. The system contains a series of sensors that spray an anti-ice chemical when dew point, temperature and other weather factors are met. But it will not spray if it is below six degrees or if winds are higher than 15 mph- the exact conditions we've had in the past few days.

MNDOT officials say if the system were to turn over those days, the chemical would have frozen and actually made the bridge worse, so they've been treating the bridge with salt and sand mixtures instead.

MNDOT officials say it's important to remember that bridges tend to be icier than nearby roads, so expect that, slow down and be careful.

 

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