Natchez Trace Route 96. Franklin, Tennessee


Services Provided by Craig Finley

  • Integrated Segment Drawings
  • Geometrical Control of Casting, Erection, and Procedural Manuals
  • Casting Curves
  • Analysis of Construction Loading
  • Design of Erection Equipment and Falsework
  • Erection Procedures
  • Post-Tensioning Calculations
  • On and Off-Site Technical Assistance

Owner

U.S. Department of Interior National Park Service / FHWA

Client

PCL Civil Constructors, Inc.

Cost

$14.3 million

Completion Date

March 22, 1994

Project completed by staff prior to FINLEY.

This project completes one of the final legs of the scenic Natchez Trace Parkway near Nashville, Tennessee.  The bridge consists of two arches; spanning 582-ft. and 462-ft. These arches, along with intermediate piers, support the precast deck.  Span arrangement includes two 204-ft. end spans, four 246-ft. typical spans and two 90-ft. intermediate spans directly over the arches.

The deck has a parabolic bottom soffit consisting of segments varying from 14-ft. to 7.5-ft. in depth.  Segments weights range from 35- to 65-tons.  Roadway deck elevation is 160-ft. above the valley floor with 140 ft.-tall piers, which were cast-in-place using jump forms.

The arches were erected using cable stays to support the segments until the arches were completed.  The deck was erected in balanced cantilever using a ground-based crane. Casting of the 122 arch segments and 196 deck segments began in the spring of 1992 with erection beginning in the summer of 1992.

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