Estero Parkway Flyover / Lee County, Florida


Award

  • 2010 Florida Engineering Society Big Bend Chapter Outstanding Technical Achievement
  • 2012 National Steel Bridge Alliance Merit Award for Long Span Bridges

Innovative Concepts

In a Value Engineering redesign, FINLEY replaces twin, cast-in-place concrete box girders with a single, four-steel box girder design. This solution provided a savings of $2.94 million to Lee County with the elimination of a large falsework support system, reduced construction time, reduced foundation design requirements, and simplified construction methods. The elimination of much of the falsework also provides relief to an ongoing widening project of I-75 beneath the structure.

Services Provided by FINLEY

  • Value Engineering Redesign of Project (Engineer of Record)
  • Construction Engineering
  • Design of Erection Equipment and Falsework
  • On and Off-site Technical Assistance

Owner

Lee County, FL

Client

ZEP Construction

Photos

Courtesy of ZEP Construction, Inc.

Cost

$35M

Innovations

  • Replace Twin, Cast-in-place Concrete Box Girders with a Single, Four-steel Box Girder Design
  • Steel Boxes are the biggest in Florida
  • Saved Money in Foundations by Lowering Bridge

Specifications & Details


2012 NSBA Merit Award for Long Span Bridges (127 KB)

Used with Permission from Modern Steel Construction, June 2012


On Opposite Coasts (462 KB)

Modern Steel Construction, Steel Bridge News, June 2008, Craig Finley, P.E., Jerry Pfuntner, P.E., Matthew Adams


Steel Savings (1 MB)

Bd&e Issue 50, 2008


A Value Proposition for Bridge Projects (1 MB)

National Steel Bridge Alliance, Steel Bridge News


Material Decisions (192 KB)

go.bridges.com, December 10, 2007


In Tallahassee Redesign, Steel Makes the Grade (153 KB)

Engineering News-Record, November 28, 2007


Estero Bridge Case Study - LUSAS (722 KB)

November 2007

The Estero Flyover is 561 ft. long with spans of 340 ft. and 221 ft., and approximately 116 ft. wide. It extends Estero Parkway over I-75, connecting to Ben Hill Griffin Parkway at a total bid cost of $35 million.

In a Value Engineering redesign, FINLEY replaces twin, cast-in-place concrete box girders with a single, four-steel box girder design. This solution provided a savings of $2.94 million to Lee County with the elimination of a large falsework support system, reduced construction time, reduced foundation design requirements, and simplified construction methods. The elimination of much of the falsework also provides relief to an ongoing widening project of I-75 beneath the structure.

The redesign called for a staged, temporary tower-support scheme to optimize the efficiency of the steel section, which allowed the steel bridge solution to be competitive against the initial cast-in-place design.

The $2.94 million refund to the county is significant because the county is responsible for funding the flyover, and the money will help it meet its budgetary commitments.

The VECP redesign resulted in cost and time savings for Lee County and the Contractor. The project was completed in September 2009.

Review Project

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