FINLEY Receives two American Council of Engineering Companies (ACEC) Awards

May 21, 2015
FINLEY won two American Council of Engineering (ACEC) Awards for expertise in bridge design and construction engineering.

US 281 Bridge over Colorado River, Marble Falls, TX (958-ft. Cast-In-Place Segmental Bridge)

L-R Pat Mosher, ACEC EEA Chairperson; Jerry Pfuntner, P.E., Principal, FINLEY; Ralph Christie, ACEC Chairman-Elect

L-R Pat Mosher, ACEC EEA Chairperson; Jerry Pfuntner, P.E., Principal, FINLEY; Ralph Christie, ACEC Chairman-Elect

Complexity and Innovation

The Archer Western (WALSH) – FINLEY team proposed design modifications and means and methods changes that exceeded all the expectations of the Texas Department of Transportation and the public, provided a stunning signature bridge that was more efficient to build and saved $2 million dollars. The New US 281 Bridges over the Colorado River are the second longest segmental bridges in Texas.

FINLEY’s design and construction engineering modifications included:

  • Reduced pier table length by 40% and eliminated significant temporary shoring in the River; and eliminated 4 temporary support towers with drilled shaft foundations. Modified pier table and segment lengths reduced 12 weeks off the construction schedule.
  • Optimized post-tensioning for means and methods to match Archer Western’s strengths and the materials and equipment that were readily available.
  • Traditional cofferdams were not feasible and a precast footing form system was designed. The “bathtub” style form was precast on-site and then lowered into the water with wall forms already attached, providing for a dry work environment to construct the footing.

“In any new project, including this signature bridge for Marble Falls, TxDOT looks to balance design, function, operations, maintenance and most importantly, safety while still providing the same product or better. The public was very sensitive to the aesthetics of this bridge, since the lake is also used for recreation. The Contractor put together a great team and the alternative concepts developed by the Contractor and Construction Engineer helped to meet the expectations of TxDOT and the public.” Howard Lyons, P.E., TxDOT Area Bridge Engineer

05_Completed_DSC_8734

Key participants and project roles:

  • Owner, Bridge Design Engineer and Construction Engineering Inspection: Texas Department of Transportation
  • Prime Contractor: Archer Western Contractors (WALSH)
  • Alternate Superstructure Design and Construction Engineer: FINLEY
  • Concrete Supplier: Ingram Readimix, Inc.
  • Post-Tensioning Contractor, Form Traveler, and Post-Tensioning Materials Supplier: VSL
  • Form Traveler Form Work: DOKA

View US 281 Bridge Over Colorado River Project Showcase

 

I-35 Brazos River Bridges. Waco, TX (“Extradosed” Bridge)

L-R Pat Mosher, ACEC EEA Chairperson; Andrew Micklus Jr., VP COO, Freyssinet, Inc.; Jerry Pfuntner, P.E., Principal, FINLEY, Ralph Christie, ACEC Chairman-Elect

L-R Pat Mosher, ACEC EEA Chairperson; Andrew Micklus Jr., VP COO, Freyssinet, Inc.; Jerry Pfuntner, P.E., Principal, FINLEY, Ralph Christie, ACEC Chairman-Elect

Complexity and Innovation

The Texas Department of Transportation selected an extradosed bridge which is a hybrid structure that combines elements of a steel box girder, reinforced concrete deck and cable-supported superstructure. Although fairly common in other countries, extradosed bridges are rare in the United States. The new bridges used an innovative design which is highly aesthetic, durable and cost-effective. This project was completed on budget and 4 ½ months ahead of schedule prior to Baylor University’s football season and the opening of the new stadium. The new bridges now provide increased mobility and safety and are a regional landmark for the local community and traveling public.

FINLEY provided construction engineering analysis to The Lane Construction Corporation. Services included: steel girder erection design; temporary support works design, three dimensional time dependent analysis (used for cable analysis), construction manual, sequence and stay cable stressing.

“These frontage road bridges are a specialized type called “extradosed”, a combination of girder and cable construction. It is the first extradosed bridge in the nation using a steel superstructure, which adds an extra complexity in maintaining the stay forces during construction.” said Kirk Krause, P.E. TxDOT Area Engineer.

 

I-35-1

Key participants and project roles:

  • Owner: Texas Department of Transportation
  • Prime Contractor: The Lane Construction Corporation
  • Construction Engineer: FINLEY
  • Bridge Design Engineer: AECOM
  • Stay Supplier: Freyssinet
  • Steel Fabricator: Hirschfeld Industries

View I-35 Brazos River Bridges Project Showcase

 

 

Leave a Reply

Note: Your email address will not be published. Required fields are marked *