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Approaches to Historic Bridge Rehabilitation Case Study #3

Approaches to Historic Bridge Rehabilitation Case Study #3. Carrollton Bridge Jonathon L. Sera, P.E. Case Study #3. Carrollton Bridge. Carrollton Road over the Wabash River, just north of Delphi, Indiana

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Approaches to Historic Bridge Rehabilitation Case Study #3

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  1. Approaches to Historic Bridge RehabilitationCase Study #3 Carrollton Bridge Jonathon L. Sera, P.E.

  2. Case Study #3 Carrollton Bridge • Carrollton Road over the Wabash River, just north of Delphi, Indiana • Rural location was the site of the first permanent crossing of Wabash River. Also, the location of historic Wabash and Erie Canal Lock. • Reinforced Concrete Arch Bridge • Constructed in 1927 • Six spans • Designed by Daniel B. Luten • Listed on the National Register of Historic Places

  3. Case Study #3 Carrollton Bridge Rehabilitation • Notice to Proceed with Design: May 2nd, 2005 • Construction Cost: $1,916,750 • Designer: Butler, Fairman, & Seufert, Inc. • Owner: Carroll County • Contractor: Wirtz and Yates, of Kentland, Indiana

  4. Significant Issues Associated With Project Case Study #3 • 20 foot wide clear roadway • Deteriorated original railing

  5. Case Study #3 Extensive Concrete Deterioration in Overhang Brackets

  6. Case Study #3 How Clearance Issue Was Resolved • Bridge owner wanted to widen bridge by 8 feet. • Interested historical agencies wanted width to remain the same. • Both parties compromised on widening bridge by 4 feet.

  7. Case Study #3 How Railing Issue Was Resolved • Modified Texas Rail to match existing rail. • Changed the opening shape from the “church window” to a rectangle. • We were able to keep reinforcement details the same. Therefore, the rail was stillconsidered crash-worthy.

  8. Case Study #3 New longer brackets were designed composite with deck.

  9. Case Study #3 Old Brackets were used as temporary supports and as guides for new brackets.

  10. Case Study #3 How Aesthetic Issue Was Resolved Insert Picture(s) of Solution • Masonry Coating was used to blend new concrete with old. • Contract required several test swaths. • Owner agreed to allow interested parties to select final color combinations.

  11. Case Study #3 Project was reopened to traffic 19 months after notice to proceed for design work.

  12. The rehabilitation cost approximately 40% less than the earlier planned replacement. Case Study #3

  13. Lessons Learned/Conclusions Case Study #3 • Must encourage owner and interested parties to compromise. • Look for current standards that may be able to be slightly modified to match existing conditions. • Careful detailing can ensure that historic integrity is not lost in rehabilitation and repair work.

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