1 / 13

Approaches to Historic Bridge Rehabilitation Case Study #4

Approaches to Historic Bridge Rehabilitation Case Study #4. Robert A. Booth (Winchester) Bridge Benjamin Tang, P.E. Bridge Preservation Manager. 1. Robert A. Booth (Winchester) Bridge. Case Study #4. 2.

enid
Download Presentation

Approaches to Historic Bridge Rehabilitation Case Study #4

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Approaches to Historic Bridge RehabilitationCase Study #4 Robert A. Booth (Winchester) Bridge Benjamin Tang, P.E. Bridge Preservation Manager 1

  2. Robert A. Booth (Winchester) Bridge Case Study #4 2 • One of several reinforced concrete ribbed deck arches designed by Conde McCullough and built in 1924. • Architecture features include Roman & Gothic details, series of arches, cantilevered balconies and lancet-arched balustrade railings. • Length: 1 @ 62’ + 7 @ 112’ + 1 @ 41’-8” = 887’- 8” • Span Type: 7 delicate arched spans, open spandrel columns, lancet-arched spandrel walls supporting the deck & roadway

  3. Case Study #4 Winchester Bridge / North Umpqua R. • Date of Rehab: 2007 • Cost of Rehab Project: $9.93 M low bid • Designed by Conde McCullough, 1922; Rehab. By Mats Halvardson, 2007 • Client/Owner: Oregon Department of Transportation • Contractor: Hamilton Construction Co., Springfield, OR Amacher Park OR-CA RR I-5 Steel Bridge Kolhagen House Winchester Bridge Parking Fish Ladder Winchester Dam 3

  4. Significant Issues Associated With Project Case Study #4 • Historic Bridge Preservation • Cultural Resources Tourism • Safety • Corrosion & Deterioration • Capacity & Load Rating 4

  5. Historic Bridge Preservation Case Study #4 • Dedicated multi-disciplinary team (structural, mechanical, corrosion, and electrical engineers) • Identify, assess and prioritize needed bridge work • Methods: pressure grouting or pumped concrete repairs, FRP composites strengthening, precasting of replacement elements, cathodic protection, recoating, microsilica deck overlay… 5

  6. Cultural Resource & Tourism Case Study #4 • National Register Listed Winchester Dam (ca. 1880) • Amacher Park • Oregon & California Railroad Corridor (ca.1870’s) • 1904 Kolhagen Ranch House • Boat ramps and sport fishing along the river • Historic steel bridge (Interstate 5) upstream. • Access • Parking • Pedestrian & Bikers • Fish ladder viewing area 6

  7. Case Study #4 Safety 19’-4” • Narrow Roadway Width • No Curb/Shoulders • Sight Distance • Straightening a curve on the North end 7

  8. Case Study #4 Comparison of original deck and new deck 8

  9. Case Study #4 36-inch rail 42-inch rail Stealth Rail – Precast in 3 staged fabrication 9

  10. Case Study #4 Corrosion and Deterioration • Beams – worst at joints • Steel rebar with section loss • Cracks and spalls • Drainage 10

  11. Case Study #4 How Significant Issues Were Resolved • New widened deck, sidewalk, stealth rails • New deck joints (asphalt plug joints) • New brackets and wider overhangs • Existing - Removed to sound concrete • Pressured grout or Pumped concrete into formed repairs • CFRP strengthening/structural capacity (H-15 to HS20) • Added drainage for run-off in new deck 11

  12. Case Study #4 Lessons Learned/Conclusions • Bridge Preservation Program and Policy in General • Long-term objectives with funding support • Sustainable program strategies • Extending service life of historic structure • Implement “just in time” preservation strategies • Corrosion protection systems • Corrosion resistance and high performance materials (FRP, SS…) • Trained staffs • Developed multi-disciplinary engineers in bridge preservation • NACE, SSPC, NHI, training/certification 12

  13. Lesson Learned/Conclusions Early coordination with all stakeholders and regulators Contractor’s experience and prequalification Public support to allow closing the bridge Continuous construction support Case Study #4 13

More Related