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Precast concrete bridge construction: Precast post-tensioned concrete module, tied cantilevered arch section bridge piers, described as V-piers, support structural steel bridge stringers/girders/beams. Sloped arch sections consist of hollow field-precast reinforced concrete segments (as shown in foreground) tied together by post-tensioned steel cables. Wood forms on top of pier are for cast in place pier cap and tie into two post-tensioned horizontal precast reinforced concrete tension tie beams that will carry the outward thrust of the two pier segments. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capital Beltway, I-95/I-495. November 2006.
Peterbilt tractor pulling flatbed trailer waits at construction site after delivering materials. In immediate background are galvanized steel soldier beams embedded in concrete in earth to support brick acoustic/privacy fence. US Route 1 interchange with I495 Capital Beltway. Woodrow Wilson Bridge project, Alexandria, Virginia. November, 2006.
Airplane view of Woodrow Wilson Bridge construction project, looking from west to east, wiith the bridge carrying the Capital Beltway US495 and the Potomac River it spans in the center. The bridge shows three distinct segments. On the left are remains of the two lane westbound segment of the old bridge, not yet fully dismantled. In the center, dark in color, is the four lane westbound segment under construction. On the right are the four lanes of the new eastbound segment, currently carrying two lanes each way until the new westbound segment is completed. At photo bottom is the highway interchange between Route 1 and Capital Beltway I 95/495 with scheduled completion in 2008. The Beltway intersects I 295 at the far end of the bridge and Maryland 210 at photo top. All of these interchanges are part of the overall project. November, 2006.
Demolition, drawbridge: Demolition view of bascule drawbridge on Potomac River, in open position, but with the draw bridge leaves (beams and road deck) cut off; leaving the geared rotating base (circled in gray). A bascule draw bridge has counterweights (circled in blue) on back side of draw bridge leaves so that raising the leaves and opening the bridge to allow ships to go through uses very little power/ energy. Woodrow Wilson Bridge Project at George Washington Street, Alexandria, Virginia, November 2006.
Airplane view of construction of interchange between Route 1 and Capital Beltway US 95/495 with scheduled completion in 2008. Route 1 is East/West, shown horizontal in photo and US95/495 is North/South, shown vertical. Part of Woodrow Wilson Bridge project. Alexandria, Virginia, November, 2006.
Steel forms and green epoxy coated reinforcing steel for cast in place reinforced concrete bridge pier base in foundation pit. Ladders provide access for workers to complete preparations for concrete placement. Piers for completed east side bridge are in left background. The curved portion at bottom of completed piers coincides with curved forms in foreground, and the ~45 degree joint shown is connection of top of pier base to lowest field precast concrete modules of V-shaped pier legs. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capitol Beltway, I-95/I-495. November 2006.
Steel forms and green epoxy coated reinforcing steel for cast in place reinforced concrete bridge pier base in foundation pit. The corner openings provide access for placing concrete, to be closed when concrete reaches the opening. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capitol Beltway, I-95/I-495. November 2006.
Steel forms and green epoxy coated reinforcing steel for cast in place reinforced concrete bridge pier base in foundation pit. Ladders provide access for workers to complete preparations for concrete placement. Piers for completed east side bridge are in left background. The curved portion at bottom of completed piers coincides with curved forms in foreground, and the ~45 degree joint shown is connection of top of pier base to lowest field precast concrete modules of V-shaped pier legs. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capitol Beltway, I-95/I-495. November 2006.
Green epoxy coated reinforcing steel extends above top of formwork for cast in place base for V-shaped bridge pier. We look over top of structural steel sheet piles surrounding foundation pit for west most pier, looking at protruding steel and top of form of the next pier base toward completed pier of east half of bridge. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capitol Beltway, I-95/I-495. November 2006.
Precast concrete bridge construction: Precast post-tensioned concrete module, tied cantilevered arch section bridge piers, described as V-piers, support structural steel bridge stringers/girders/beams. Sloped arch sections consist of hollow field-precast reinforced concrete segments (as shown in foreground) tied together by post-tensioned steel cables. Wood forms on top of pier are for cast in place pier cap and tie into two post-tensioned horizontal precast reinforced concrete tension tie beams that will carry the outward thrust of the two pier segments. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capital Beltway, I-95/I-495. November 2006.
Precast concrete bridge construction: Precast post-tensioned concrete module, tied cantilevered arch section bridge piers, described as V-piers, support structural steel bridge stringers/girders/beams. Sloped arch sections consist of hollow field-precast reinforced concrete segments (as shown in foreground) tied together by post-tensioned steel cables. Wood forms on top of pier are for cast in place pier cap and tie into two post-tensioned horizontal precast reinforced concrete tension tie beams that will carry the outward thrust of the two pier segments. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capital Beltway, I-95/I-495. November 2006.
Precast concrete bridge construction: Precast post-tensioned concrete module, tied cantilevered arch section bridge piers, described as V-piers, support structural steel bridge stringers/girders/beams. Sloped arch sections consist of hollow field-precast reinforced concrete segments (as shown in foreground) tied together by post-tensioned steel cables. Wood forms on top of pier are for cast in place pier cap and tie into two post-tensioned horizontal precast reinforced concrete tension tie beams that will carry the outward thrust of the two pier segments. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capital Beltway, I-95/I-495. November 2006.
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