The Phyllis J. Tilley Memorial Bridge is a pedestrian bridge in

Fort Worth Fort Worth is the fifth-largest city in the U.S. state of Texas and the 13th-largest city in the United States. It is the county seat of Tarrant County, covering nearly into four other counties: Denton, Johnson, Parker, and Wise. According ...

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

Description

The Phyllis J. Tilley Memorial Bridge crosses over the Trinity River connecting Trinity Park to a new trail that terminates in downtown Fort Worth. This 368' (112m) long steel stressed ribbon/arch combination bridge is the first of its kind in North America. A steel arch with a span of 163' (49.5m) supports steel stress ribbons and precast concrete planks over the river complementing the adjacent historic Lancaster Avenue vehicular bridge. The arch spans the entire river and the steel stress ribbons rest upon the arch. The minimal sag profile of the stressed ribbons creates major tension loads which are balanced against the thrust loading in the opposite direction caused by the steel arch. The balancing of these opposing loads minimizes the required size of the foundations. Pre-fabricated concrete planks have been anchored directly to the steel stress ribbons to form the bridge walkway, eliminating the need for temporary scaffolding in the river and on the adjacent shorelines. The absence of vertical support struts reduces horizontal loads created by periodic river flooding. At night, the bridge is illuminated by a combination of white and blue LED lights.

Design and construction

The Phyllis J. Tilley Memorial Bridge was completed in 2012, with Freese and Nichols as the Lead Engineering Firm and Engineer of Record. Bridge Architect Miguel Rosales of Boston-based transportation architects Rosales + Partners provided the Conceptual Design, Bridge Architecture and Aesthetic Lighting Design. The Freese Nichols / Rosales + Partners team also collaborated with structural engineers

Schlaich Bergermann & Partner Schlaich bergermann partner is a nationally and internationally active structural engineering and consulting firm with headquarters in Stuttgart, Germany and branch offices in Berlin, New York City, São Paulo, Shanghai and Paris. History The f ...

. The contractor for the bridge project was Rebcon, Inc. of Dallas, Texas. Funding for the bridge was provided by the

Texas Department of Transportation The Texas Department of Transportation (TxDOT ) is a government agency in the American state of Texas. Though the public face of the agency is generally associated with the construction and maintenance of the state's immense state highway system ...

, the City of Fort Worth, and local non-profit organizatio
Streams and Valleys, Inc

Awards

*2013 Engineering Excellence Awards - Eminent Conceptor,

American Council of Engineering Companies The American Council of Engineering Companies (ACEC) is the oldest and largest business association of engineering companies. It is organized as a federation of 52 state and regional councils with national headquarters in Washington, D.C., compris ...

of Texas (ACES-Texas) *2013 Engineering Excellence Awards - Gold Medal in Structural Systems, American Council of Engineering Companies of Texas (ACES-Texas) *2013

American Road and Transportation Builders Association The American Road & Transportation Builders Association (ARTBA) is a trade association representing the transportation construction industry in the United States and is based in Washington, D.C., United States. Established in 1902, the associa ...

- Transportation Development Foundation Globe Award *2013 Architizer A+ Awards - Finalist *2013 Engineering News-Record (ENR) Texas & Louisiana Best Project Award for Small Projects (Under $10 Million) *2014 NSBA Prize Bridge Competition - Prize Bridge Award in the Special Purpose Category *2015 Downtown Fort Worth Trailblazer Award - Innovation Award

References

External links

* {{DEFAULTSORT:Phyllis J. Tilley Memorial Bridge Pedestrian bridges in the United States Transportation buildings and structures in Fort Worth, Texas Pedestrian bridges in Texas Bridges completed in 2012 Open-spandrel deck arch bridges in the United States Steel bridges in the United States Stressed ribbon bridges in the United States