Problem: Transportation agencies are challenged to improve safety, reduce congestion, and undertake necessary construction projects
The top priority of transportation agencies is to stem the loss of more than 40,000 lives each year to crashes. At the same time, transportation agencies are committed to offering motorists high-quality, longer lasting highways and bridges while reducing construction time and traffic congestion that, taken together, cost the Nation $63 billion each year in wasted time and fuel. These agencies, however, also operate against a backdrop of challenges: a need for intensified construction activities to restore the Nations aging transportation system, which largely was built in the 1950s and 1960s; capacity that has increased little in the past two decades; and growing communities and increasing traffic volumes.
Solution: Prefabrication minimizes traffic disruptions
Prefabricated bridge construction can help minimize traffic delays and community disruptions by reducing onsite construction time and improving quality, traffic control, and safety.
Using prefabricated bridge elements and systems means that time-consuming formwork construction, curing, and other tasks associated with fabrication can be done off site in a controlled environment without affecting traffic.
Putting It in Perspective
Successful Applications: More than 11 States are actively pursuing PFBES as a standard practice.
The Washington State Department of Transportation, for example, used prefabricated elements to replace 1,189 meters (3,900 feet) of bridge deck on the Lewis and Clark Bridge over a period of 120 nights, with 4 weekend closures and little or no impact on rush-hour traffic. The Virginia Department of Transportation replaced a bridge along Interstate 95 over the James River using prefabricated elements. The project took place over 135 nights, with no road closures during rush-hour traffic. Both of these projects were not just completed faster, but also came in under budget, at a price lower than the engineer's estimate.
National Deployment Statement
Using PFBES reduces traffic and environmental impacts by minimizing the need for lane closures, detours, and the use of narrow lanes.
National Deployment Goal
By 2009, PFBES technology will be used on a regular basis in 35 States.
National Deployment Status
Forty presentations were made to national and international conferences and workshops. A marketing plan was drafted in collaboration with HFL. FHWA sponsored five ABC showcases in MN, OR, FL, RI and UT, which were attended by more than 300 engineers from states and industry. Decision Framework and SPMT “how to” manual for moving complete bridges into place was published and posted on the web. A connection detail manual for PBES applications was also drafted.
Phase of Deployment
PHASE III-Delivery Activities
Visit the Federal Highway Administration's (FHWA) PFBES Web site at http://www.fhwa.dot.gov/bridge/abc/prefab.cfm.
To learn more about AASHTO-TIG's approved technologies, visit http://tig.transportation.org.
Vasant Mistry, FHWA Office of Bridge Technology
To request additional copies of this publication, contact:
FHWA Corporate Research, Technology, and Innovation Management
|»||Corporate Master Plan (CMP) for Research and Deployment of Technology & Innovation (FHWA-RD-03-077)|
|»||Innovation Life Cycle|
|»||Highways for Life|
|»||FHWA Resource Center|
|»||Local and Tribal Technical Assistance Program|
|»||AASHTO Focus Technologies|
|»||AASHTO Additionally Selected Technologies|
|»||Priority, Market-Ready Technologies and Innovations Summary List|
|»||511 Traveler Information|
|»||Accelerated Construction Technology Transfer (ACTT)*|
|»||Air Void Analyzer (AVA)*|
|»||Asset Management Guide|
|»||Bridge and Tunnel Security|
|»||Cable Median Barriers*|
|»||Construction Analysis for Pavement Rehabilitation Strategies (CA4PRS)|
|»||Continuous Flight Auger (CFA) Piles|
|»||Expanded Polystyrene (EPS) Geofoam|
|»||Fiber-Reinforced Polymer (FRP)*|
|»||Highway Economic Requirements System, State Version (HERS-ST)|
|»||Improved Decisionmaking Using Geographic Information Systems|
|»||ITS Deployment Analysis System (IDAS)|
|»||Load and Resistance Factor Design (LRFD) and Rating of Structures|
|»||Pavement Smoothness Methodologies|
|»||Prefabricated Bridge Elements and Systems (PFBES)*|
|»||Road Safety Audits (RSA)*|
|»||Transportation, Economics, and Land Use System (TELUS)|