FINLEY Wins two 2015 ASBI Bridge Awards and Ranks as a Finalist for two Bentley 2015 Be Inspired Awards

November 10, 2015

Bridge design firm, FINLEY announces that it has won two 2015 ASBI Bridge Excellence Awards from the American Segmental Bridge Institute (ASBI) and two projects were finalists in the Bentley 2015 Be Inspired Awards competition.

The award-winning ASBI projects for Innovation in Design and/or Construction were Section 5 Palmetto SR826/836 Interchange (Bridges 9, 11, 15 and 19) and the U.S. 281 Bridge over the Colorado River.

2015 ASBI Bridge Excellence Awards

Section 5 Palmetto SR826/836 Interchange (Bridges 9, 11, 15 and 19)

For the Section 5 Palmetto SR826/836 Interchange (Bridges 9, 11, 15 and 19), as the Engineer of Record and as part of the design-build team, FINLEY designed and provided the construction engineering on four high-level segmental bridge ramps (Bridge Nos. 9, 11, 15 and 19) that traverse the core of the interchange. The segmental bridge ramps were precast, balanced cantilever and erected with a 460 ft. launching gantry. The bridge lengths varied from 1,100 ft. to 2,450 ft. in length and are 47 ft.-wide, with a maximum span length of 266 ft. The curved segmental bridge ramps are the third level of the interchange with radii down to 590 ft. and have a maximum superstructure deck height of 95 ft. above the proposed ground. All of the bridges are supported on 24” pile foundations and reinforced concrete piers and caps.

The design offered unique challenges integrating underlying roadways, canals and MOT requirements into the layout of these segmental bridge ramps. This project was constructed in the Miami International Airport flight path and had FAA Requirements. The high level segmental flyovers are built over multiple roads that carry 430,000 vehicles per day and are the tightest elevation curves erected in the United States. The all overhead erection eliminated the need for falsework and cranes and eliminated five MOT phases that would have impacted traffic, thereby providing a safer work environment. FINLEY integrated the design into the construction while satisfying the strong aesthetic requirements. The design reduced maintenance and construction costs with the utilization of external tendons, Diabolos and deviators. The use of polystyrene in the hollow pier columns, except at the base of the caps, eliminated the need for interior formwork and reduced the overall mass of the structure and concrete required.

Key Team Members:

  • Owner: Florida Department of Transportation
  • Contractor: Community, Condotte America, Inc., De Moya Joint Venture
  • Designers: FINLEY – Segmental bridge design; BCC Engineering, Inc. – prime design consultant
  • Bridge Aesthetics: Touchstone Architects
  • Precast Producer: Rizzani de Eccher
  • Casting and Erection Equipment: DEAL
  • Post-Tensioning: VSL
  • Construction Engineering and Inspection: AIM Engineering and Survey, Inc.

 

Jury Comments: “Great solution in a difficult environment. Proportioning pier caps to accept temporary jacks for cantilever stability during construction was an innovative way of eliminating temporary stability towers, reducing impacts to the motoring public. Rapid construction completed with significant cost savings proves once again, segmental bridge is a competitive structure type. First use of diabolos in Florida was proven successful.”

 

Bentley 2015 Be Inspired Awards

U.S. 281 Bridge over the Colorado River

For the U.S. 281 Bridge over the Colorado River, the FINLEY-Archer Western Contractors Team’s proposed design modifications and proposed means and methods met all project requirements, including a stunning signature bridge that was more efficient to build and saved $2 million dollars, 5% below TxDOT’s estimate. A major change to the design was the modified pier table and segment lengths. Because the river bed and adjoining cliffs are hard limestone and the lake is a major tourist attraction, TxDOT wanted the bridge to have the fewest piers necessary in the water. FINLEY’s innovative approach reduced the pier table length by 40%, saving approximately 12 weeks off the construction schedule. The design modifications included the use of the contractor’s form travelers from another jobsite and available for this project. This provided a cost savings of $750,000. The cast-in-place segmental construction method used form travelers which required less labor-intensive falsework to be built to support the bridge during construction and reduced several months off the project schedule. Traditional cofferdams could not be used. The design modification specified a hanging precast concrete footing form from the drilled shaft casings. 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. The bathtub dewatering design allowed the entire column pour in dry conditions. Use of FINLEY’s proprietary software made it possible to develop details quickly to meet the demanding schedule, including integrated segment drawings combining reinforcing bars, bolt inserts (for utilities), electrical conduits, etc., all into one drawing. The design modifications and proposed means and methods met all project goals and provided a signature bridge, while saving time and money.

Key Team Members:

  • Owner, Bridge Designer: Texas Department of Transportation
  • Contractor: Archer Western Contractors
  • Alternative Superstructure Design and Construction Engineering: FINLEY
  • Post-Tensioning: VSL

 

Jury Comments: “Reused form travelers from another project resulted in cost and time savings. Highly aesthetic shape in an area with heavy recreational boat traffic. Innovative precast footing box allowed for footings to be placed below the waterline without cofferdams. The perfect fit to meet this project’s diverse demands of the traveling public, local environment and surrounding community. The boat-shaped hull bottom slab, tapered piers, absence of visible foundations, and lighting have combined to produce a beautiful bridge day or night.”

 

The two FINLEY projects ranked as Bentley Be Inspired awards finalist were the I-49 Segment K and the U.S. 281 Bridge over the Colorado River.

 

I-49 North Segment K

The I-49 North Segment K extension is part of a 30-mile-long project by the Louisiana Department of Transportation and Development. It includes roadway improvements and service roads on the I-49 Bridge. FINLEY provided bridge design services for three precast segmental bridges with 120- to 260-foot span lengths. This included 700 segments and roadway cross sections from 31.5 to 52 feet. To streamline precast segment production, FINLEY developed a single segment core that could accommodate the variation in segment widths. The cross sections for three bridges had to be developed concurrently to meet this challenge and optimize segment casting for the entire project. Using the cross-section/post-tensioning generation capabilities of RM Bridge, FINLEY was able to perform the superstructure design of three bridges simultaneously.

 

Key Team Members:

  • Owner: Louisiana Department of Transportation and Development
  • Segmental Bridge Design Engineer of Record: FINLEY
  • Prime Consultant Bridge Design Steel Box Girder Bridges, Ramp EN: TRC Engineers
  • Interchange Bridge Aesthetics: Touchstone Architects
  • Prime Roadway Design Consultant: AFJM, Inc.
  • Roadway Consultant I-220 Bridge Widening: NTB Associates

 

U.S. 281 Bridge over the Colorado River

The U.S. 281 Bridge over the Colorado River consists of twin bridges, each with two lanes in opposite directions, carrying US 281 over the Colorado River. The 958-foot-long structure replaced a functionally obsolete steel truss bridge, which had to remain open to traffic throughout construction. FINLEY used proprietary software for segment geometry control and bridge information modeling (BrIM) with RM Bridge to develop details quickly. FINLEY devised integrated segment drawings that combined reinforcing bars, bolt inserts, electrical conduits, and other details all in one drawing. A time-dependent staged analysis of the structure was conducted to monitor stresses and anticipate deflections during construction. Stringent geometry control enabled Archer Western Contractors to make minor adjustments as necessary. Design modifications achieved $2 million in savings.

 

Key Team Members:

  • Owner, Bridge Designer: Texas Department of Transportation
  • Contractor: Archer Western Contractors
  • Alternative Superstructure Design and Construction Engineering: FINLEY
  • Post-Tensioning: VSL

 

FINLEY receiving ASBI Bridge awards for the Section 5 Palmetto SR826/836 Interchange (Bridges 9, 11, 15 and 19) and the U.S. 281 Bridge over the Colorado River.

Download ASBI 2015 Awards Program

Bentley-2015_Awards-CraigFinley-1

Craig Finley, at the Bentley Be Inspired Awards competition.

PalmettoIMG_1203-2

Section 5 Palmetto SR826/836 Interchange (Bridges 9, 11, 15 and 19)

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U.S. 281 Bridge over the Colorado River

 

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