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Nebraska Chapter ACI page 9

THE HARRIS OVERPASS WESTERN GATEWAY TO LINCOLN NEBRASKA

THIS PROJECT WAS SUBMITTED & DESIGNED BY: The Schemmer Associates OWNER: City of Lincoln, Engineering Services CONTRACTOR: Cramer & Associates, Grimes Iowa CONCRETE SUPPLIER: Husker Ready Mix and Ready Mix Concrete Company PRECAST SUPPLIER: Artisan Stone Company, Inc PRESTRESS SUPPLIER: Concrete Industries

The new Harris Overpass is designed to last a century, yet look at home in Lincoln’s historic Haymarket District.

At 1,886 feet long, it is nearly 16 feet longer then the deteriorating O Street viaduct it replaced.

Spanning two blocks of the Haymarket and 25 rail lines, its 14 concrete piers vs. the previous 28 piers, help to open space and promote development in the area below the bridge.

To fit with its surroundings, the bridges mechanically stabilized walls, concrete piers, girders, bridge rails, and medians, were all coated in a three color scheme, which were chosen to match the surrounding buildings and ornamental light posts.

The coating technique was selected over staining for better color control and moisture protection.

Concrete won over steel as the building material for long term maintenance and safety issues. Allowing the City of Lincoln to utilize a infrared camera to detect ice and electronic message signs to advise motorists of bridge surface conditions.

The decision to close the viaduct access entirely for nearly a year, rather then have a two year project with limited traffic flow, saving the City of Lincoln and estimated $5 Million in construction costs.

The re-opening in October 2008, was approximately 1 month ahead of schedule, putting the entire cost of the project at $23.5 Million.

Front, L to R: Kris Humphrey, City of Lincoln, David Monestero, Artesan Stone, Jeremy Davis, Husker Concrete Back, L to R: Steve Kathol, The Schemmer Assoc., Todd Cochran, The Schemmer Assoc., Mark Lafferty, Concrete Industries, and Robert Schluter, Husker Concrete.

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