|
|
PBES Innovative Projects
Dead Run and Turkey Run Bridges |
|---|
| Location | George Washington Memorial Parkway |
|---|
| State | VA |
|---|
| Completion Date | 1998 |
|---|
| Contact Person | Hala Elgaaly P.E.
Special Projects Engineer
Federal Lands Bridge Office
Federal Highway Administration
21400 Ridgetop Circle
Sterling VA 20166
Phone: (703) 404-6233
Fax: (703) 404-6234
Email: hala.elgaaly@fhwa.dot.gov |
|---|
| Description | The George Washington Memorial Parkway experiences heavy commuter usage from workers travelling from Virginia and Maryland into Washington D.C. The 1996 average daily traffic for the Parkway was 42,800 vehicles, with 53,500 vehicles/day projected for 2016. Because of its heavy commuter use, the bridges over Dead Run and Turkey Run needed to be kept open to traffic on weekdays during replacement of bridge decks. The Dead Run bridge consists of two structures that each carry two lanes of traffic; the bridge is 305 feet long with a 3-span configuration. The Turkey Run bridge is also two structures that each carry two lanes of traffic, and it has a length of 402 feet in a 4-span configuration. Both bridges have an 8-inch concrete deck supported on steel beams with non-composite action. The non-composite aspect of the original design, along with the use of precast concrete post-tensioned full-depth deck panels, facilitated quick deck replacement and allowed the structures to be kept open during weekday traffic. The construction sequence closed the bridge on Friday evening, saw cut the existing deck into transverse sections that included curb and rail, removed the saw cut sections of the deck, set new precast panels, stressed the longitudinal tendons after all panels in a span were erected, grouted the area beneath the panel and above the steel beam, and opened the bridge to traffic by Monday morning. The construction rate was replacement of one span for one bridge per weekend. |
|---|
| Photo |  |
|---|
| Prefabricated Elements | Decks |
|---|
| Other Keywords | Full-depth non-composite decks,full-depth deck panels |
|---|
| Advantages | Minimized traffic disruption. Traffic was maintained during weekdays to minimize effect on commuters from Virginia and Maryland into Washington D.C. |
|---|
| Photo Credits | Federal Highway Administration |
|---|
|
Events
More Information
Contact
Vasant Mistry
Office of Bridge Technology
202-366-4599
E-mail Vasant
|
| |
This page last modified on 05/12/08 | |
