Project 5   cooper river bridge 092210
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Project 5 cooper river bridge 092210

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Case Study #5 for UTCM Report #08-14-03 "Making Mobility Improvements a Community Asset: Transportation Improvements Using Context-Sensitive Solutions"

Case Study #5 for UTCM Report #08-14-03 "Making Mobility Improvements a Community Asset: Transportation Improvements Using Context-Sensitive Solutions"

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  • New Cooper River Arthur Ravenal, Jr. Bridge with old bridges still standing next to it.

Project 5   cooper river bridge 092210 Project 5 cooper river bridge 092210 Presentation Transcript

  • Project 5Cooper River (Arthur Ravenal Jr.) Bridge Charleston-Mt. Pleasant, South Carolina 1
  • Project Spans 2½ miles including ship channel Replace, increase capacity of 1929, 1966 bridge pair  Weight-limited (structural deterioration)  Congested  High maintenance  Provide 8 lanes  Obsolete design criteria  No shoulder, medians  Steep grades10 foot lanes Source: http://maps.google.com/  Insufficient vertical clearance over ship channel Improve interchanges on bridge approaches 2
  • ProjectReplace one 2-lane and one 3-lanebridge with an 8-lane bridge andimprove connections to I-26 and localroads. 3
  • CSS Approach  Agency partnership  State infrastructure bank  SCDOT  Charleston County  South Carolina State Port Authority  FHWA  Proactive partnership with community  Compatibility  Environmental mitigation  Design input  Expedited environmental permitting  Other features  Public work sessions  Public outreach campaign  Collaboration with other agencies, citizens, stakeholders  Citizen vote on bridge tower designPhoto source: http://ravenelbridge.net/small/jul_12_bridge_south_blog.jpg 4
  • CSS Design Features Sensitivity to community features Aesthetic treatments  Decorative lighting  Hand rails  Light poles Citizen approved tower design 12 foot ped/bike path Scenic overlooks Source: http://www.gcbl.org/system/files/cooper_river_thumb_0.jpg Rock islands at tower bases (prevent damage by ship) Decorative lighting (off during turtle season) Relocation of some displaced trees Parks, open space in old bridge alignment 5
  • CSS Design Features (cont.)Longest cable-stayed bridge in North America. Highest cost public works project in South Carolina history. Source: Google Earth 6
  • CSS Design Features (cont.)West (left) and east approaches andinterchanges. Source: Google Earth 7
  • CSS Design Features (cont.)West approach during late construction phase. Source: http://www.ravenel.net 8
  • CSS Design Features Source: http://www.freyssinetusa.com/images/freyssinet/lightbox/stay_cable_1.jpg 9