Estero Parkway Flyover. Lee County, Florida
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
- Replace Twin, Cast-In-Place Concrete Box Girders With A Single, Four-Steel Box Girder Design
- Steel Boxes Are The Biggest Boxes In Florida
- Lowered Bridge, Saved Money In Foundations
Specifications & Details
Reference Letter (124.6 KB)
Lee County, Florida
On Opposite Coasts (461.9 KB)
Modern Steel Construction, Steel Bridge News, June 2008, Craig Finley, P.E., Jerry Pfuntner, P.E., Matthew Adams
Steel Savings (1.5 MB)
Bd&e Issue 50, 2008
A Value Proposition for Bridge Projects (1.4 MB)
National Steel Bridge Alliance, Steel Bridge News
Material Decisions (191.7 KB)
go.bridges.com, December 10, 2007
In Tallahassee Redesign, Steel Makes the Grade (153.3 KB)
Engineering News-Record, November 28, 2007
Estero Bridge Case Study - LUSAS (721.6 KB)
The Estero Flyover is 561 feet long, with spans of 340 feet and 221 feet, and approximately 116 feet wide. It extends Estero Parkway over I-75, connecting with 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 them 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.