Automatic anti-icing systems on bridges reduced crashes by 25 to 100 percent and benefit-to-cost ratios ranged from 1.8:1 to 3.4:1.
Duluth,Minnesota,United States; Winona,Minnesota,United States; Dresbach,Minnesota,United States; Statewide,Utah,United States; Nationwide,United States
An extensive literature review on automatic bridge deck anti-icing systems was executed. Researchers also reviewed the experiences of several transportation agencies that deploy such systems.
FINDINGS FROM THE LITERATURE REVIEW
- After the installation of an automatic bridge deck anti-icing system in Utah there was a 64 percent reduction in reported crashes.
- In Minnesota, the installation of automatic anti-icing systems reduced crashes at three sites:
- Interstate 35 bridge near Duluth by 56 percent. The benefit-to-cost ratio was 2.0:1.
- Truck Hwy 61 bridge near Winona by 100 percent. The benefit-to-cost ratio was 3.1:1.
- An intersection in Dresbach by 100 percent. The benefit-to-cost ration was 2.7:1.
- In Minnesota, another anti-icing system installed on I-35W at the Mississippi River Bridge resulted in a 68 percent reduction in winter season crashes and a benefit-to-cost ratio of 3.4:1.
- Accident frequency reduction varies from 25 to 100 percent.
- Benefit-to-cost ratios of such systems are in the range of 1.8:1 to 3.4:1.
Bridge Prioritization for Installation of Automatic Anti-icing Systems in Nebraska
Author: Khattak, A.P., and Geza Pesti.
Published By: Proceedings of the 2003 Mid-Continent Transportation Research Symposium. Iowa State University. Ames, Iowa.
Source Date: August 2003
Average User Rating
Typical Deployment Locations
Metropolitan Areas, Rural Areas, Statewide