Project 8 woodrow wilson bridge 092210

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Case Study #8 for UTCM Report #08-14-03 "Making Mobility Improvements a Community Asset: Transportation Improvements Using Context-Sensitive Solutions"

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  • Graphic shows environmental mitigation associated with Woodrow Wilson bridge replacement project
  • Project 8 woodrow wilson bridge 092210

    1. 1. Project 8Woodrow Wilson Bridge Replacement Washington, DC 1
    2. 2. Woodrow Wilson Bridge Part of I-495 Capital Beltway Long term DC area bottleneck Source: Transportation Research Record 1900 2
    3. 3. Issues Volumes 2½ times design Congestion, delays I-495 bottleneck Public opposition to early designs  Environmental  Historic  Should accommodate future rail  Visual barrier  Residential displacement  Navigable channel clearance  Economic viability of adjacent business during construction 3
    4. 4. Project Replace/widen bridge to 12 lanes plus  8 general purpose  2 merge/diverge  2 express +  2 future HOV or rail transit  14 foot ped/bike way (on one bridge) +  Scenic overlook areas Improve adjacent interchanges 4
    5. 5. CSS Approach Coordination Committee (CC) to establish process  Elected local, regional, federal officials Citizen work groups Stakeholder participation panels (SPP)  SPP recommendations to CC Notable achievements  Design features  Environmental mitigation  Historic preservation  Management practices Source: http://www.wilsonbridge.com 5
    6. 6. DesignSource: Google Earth 6
    7. 7. DesignWest (left) and east approaches and interchanges. Source: Google Earth 7
    8. 8. Design Source: http://www.wilsonbridge.com 8
    9. 9. CSS Design Features Architectural concept compatible with other Potomac bridges Future rail transitway Pedestrian/bike way Pedestrian lighting Scenic overlooks Environmental features (partial)  Over 100 acres new wetlands  Over 100 acres riparian forest preserved or created  Aquatic vegetation  Dredged material used to reclaim strip mine  Fish passageways in nearby creeks Source: http://www.wilsonbridge.com 9

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