Seven bridges owned and operated by state transportation departments across the country have been named to Roads & Bridges magazine's "2012 Top 10 Bridges" list. Washington, D.C.'s District Department of Transportation (DDOT) won top honors, as its 11th Street Bridges Design-Build project was ranked the nation's top bridge for 2012.
Roads & Bridges began recognizing the best bridges in North America with the Top 10 Bridge awards in 2000. Nominations are submitted each year to the magazine’s editorial staff which then judges each bridge on project challenges, impact to the region, and scope of work.
DDOT's 11th Street Bridge is replacing two bridges built in the 1960s with three new bridges that will separate local and freeway traffic. The design-to build-to budget procurement model adopted by DDOT created a fixed price and delivery deadline which allowed the project contractor to recommend the most innovative and cost effective plan, resulting in a savings of $100 million.
Roads & Bridges applauded DDOT's bridge as "a triple-crown winner in traffic congestion relief, innovative delivery, and environmental stewardship."
The other state DOT bridges ranked in the Top 10 are:
The three bridges rounding out the Top 10 were the Willis Avenue Swing Bridge by the New York City Department of Transportation ($652 million), Tri-State Tollway/Jane Addams Memorial Tollway Tri-Level Bridge Project by the Illinois Tollway ($13 million,) and the Cushing Street/Luis G. Gutierrez Bridge by the City of Tucson ($4.5 million).
More information on Roads & Bridges magazine's 2012 list of top 10 bridges is available at bit.ly/roadsbridges10.