2008: (Bridge Hunter; Satellite)
 |
| escsi The deck was replaced and widened in 1982-83 with precast panels that used novel lightweight aggregate concrete and post-tensioning. |
 |
| RosalesPartners, 1 of 10 "Curved steel girders & V-shaped concrete piers" |
 |
| Peter Moreno posted The Woodrow Wilson Memorial Bridge crossing (I95/495 Capital Beltway) the Potomac River just south of Washington D.C. The southwest border of DC is actually on the western edge of the bridge as it approaches Virginia. You can also see the dolphins protecting the drawbridge near that border as well. C Patrick Zilliacus: Unusual for an Interstate, this bridge has a draw span, but the hours that it can open to river traffic is limited by federal law. The draw span is located near the Virginia Shore and can be identified by the "fenders" on both sides of the navigation channel. The previous 1961 span also had a draw span and was slightly north of the current structure. The 1961 span was demolished after the span that now carries Outer Loop (Virginia to Maryland) traffic was completed in 2006. John Z Wetmore: C Patrick Zilliacus The new bridge is higher, so the draw span doesn't need to be opened as often. Tyrone Taxpayer: C Patrick Zilliacus the old span had to be opened at least once a week, specifically for the boat bringing the fresh paper for the Post. Anthony Migliaccio: It’s draw span was incorporated into the design to allow ocean going ships to dock at Alexandria and the Washington Navy Yard upriver on the Anacostia River. Since being opened to traffic, the last commercial pier, the Washington Post’s newsprint warehouse pier in Alexandria has closed. Tall tall ship access to the Washington Navy Yard on the Anacostia River is limited as the Frederick Douglas swing bridge has been replaced with a fixed span. The new Wilson rarely opens now except for scheduled maintenance. |
 |
| Structurae, ID 17157 "The new 12-lane bridge includes 4 side-by- side, double leaf bascule spans, each with a 82m (270') center-to-center trunnion spacing and an overall bridge width of 76m (250'). The bascule span is supported on delta-shaped concrete bascule piers. Provides a 53m (175') horizontal channel for navigation. Open position affords unrestricted vertical clearance within designated channel and a 21m (70') minimum vertical clearance, span closed, for navigation." |
 |
| aisc 2009 Special Purpose Award, $680m |
 |
| aecom "The $2.35 billion Woodrow Wilson Bridge Project was featured on the Discovery Channel’s Extreme Engineering Series and was termed 'the world’s largest drawbridge.' The Project has received over 70 major awards, including ASCE’s Opal Award, and has been referred as ‘Washington DC’s Newest Monument’ which has successfully eliminated the worst traffic bottle neck on Interstate 95 between Maine and Florida." [I can't reconcile the $2.35b cost with the $600m and $680m figures I saw in other sources. Perhaps the billions include highway interchange improvements and environmental protection projects as well as the bridge itself.] The 1000 steel pipe piles where up to 72" in diameter and 210' long. "Amazingly, over the course of 15 years of design and construction, the cost of the project was actually reduced by $86 million from the original estimate of $2.44 billion to the final cost of $2.35 billion, thanks to diligent program management and cost control by AECOM and our partners." |
 |
| Bridges Now and Then posted Building the Woodrow Wilson Bridge over the Potomac River, linking Oxon Hill, Maryland, and Alexandria, Virginia, 2005. (Sanjay Arwade) Structurae, ID 59124 |
 |
| Ričardas Vidutis posted A cathedral of engineering--the Wilson Bridge spans the Potomac between Virginia and Maryland and is a place of grandeur and beauty. Beneath the 12 lanes of traffic that the bridge supports, the combination of the V-piers and the girder haunches form an architectural motif of arches suggesting cathedral vaulted ceilings. The details of the arched piers are what drives me to come here again and again to photograph. Even though there is the constant hum from the traffic noise above, people find sanctuary among the arches to picnic, ride bikes, play ball games, fish, jog. |
No comments:
Post a Comment