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ACTT Workshop: Oklahoma
May 25-27, 2004, Oklahoma City, Oklahoma

Appendix C (continued): Skill Set Reporting Forms

Structures/Geotechnical

IDEA (Short Name) IDEA (Detailed Description) Implementation Details (Barriers, Skill Set Coordination, etc.)
Elevate depressed section.
  • Elevate I-40 on structure or embankment from east of Western Avenue to east of BNSF Railroad. The Union Pacific railroad would remain in place and at existing elevation. Walker and Robinson Avenues would remain depressed with some improvement to grade. Consider segmental concrete box construction for mainline structures.
Advantages:
  • Eliminate shoe-fly and reconstruction for Union Pacific.
  • Eliminate bridge over I-40 for the BNSF railroad.
  • Eliminate unknown cost-time issues associated with railroad relocation.
  • Significantly reduce construction time and increase potential cost saving (18 months out of the critical path for BNSF shoe-fly bridge).
  • Eliminate depressed section drainage issues and ground water impacts.
  • Eliminate reconstruction of Lee Street outfall.
  • Minimize potential hazardous material.
  • Hazardous material incident issues are reduced.
  • Safety and rescue issues are improved.
  • Opportunity to eliminate pedestrian bridge at Hudson Boulevard and provide at-grade access.
  • Reduce the need to reconstruct Shields Avenue.
  • Eliminates impacts and unknown cost to Union Station and Cold Storage.
  • May be able to provide full interchange at Shields and eliminate the interchange at Robinson.
  • Disadvantages:
  • Environmental document would have to be revisited.
  • Noise impacts.
  • Visual impacts.
  • Long-term maintenance needs.
  • Need for deicing or anti-icing.
  • Increase need for barrow.
  • The ramp lengths will change.
Identify staging areas.
  • Onsite or near onsite.
Advantages:
  • Save time and money.
  • Move bigger precast elements-easier delivery.
  • Minimize impact on local traffic and to existing infrastructure.
  • Disadvantages: Impacts to local neighborhoods.
Early geotech investigation.
  • A two-phase geotechnical investigation should be conducted along the alignment. One preliminary investigation should be done as soon as possible that addresses all geotechnical, drainage, and hazardous material concerns. A second detailed geotechnical investigation needs to be done for each design phase.
Advantages:
  • Especially around cold storage plant, structures, landfills, and high fills.
  • There are a lot of things that can be done to accelerate construction in bad soils.
  • Need to know if the excavation from the depressed section can be used for fill.
Review specs to eliminate time delays and use accelerated testing technology to address material acceptance such as maturity meter.
  • There are many time constraints on concrete. They need to be changed to strength limits.
Advantages:
  • Saves time.
Eliminate cast-in-place walls. Use alternative retaining walls for the depressed section.
  • Typical practice is to design cantilever walls and allow MSE as alternative. The category of wall would not be required. The plans would identify line, grade, and aesthetics, and the wall selection and construction would be done by the contractor.
Advantages:
  • Save design time.
  • Provide opportunity for achieving most cost-effective alternative and construction time for walls.
Roll-in bridge construction for BNSF railroad over I-40 and over Boulevard.
  • Eliminate shoe-fly by constructing permanent structure off alignment then moving it in place within 24-hour periods.
Advantages:
  • Time and major cost savings.
  • Moves this item off critical path for the I-40 bridge.
  • Disadvantage:
  • There is a risk to the railroad if the structure is not open in time.
Consider bridge VS walls on all elevated ramps.  
  • Implementation Detail: Need to identify the transition between wall and bridge to minimize cost and time.
Consider prefabricated structure elements throughout.
  • Consider full depth, precast decks, segmental concrete box girder superstructure, prefabricated superstructure, and prefabricated substructures.
Advantages:
  • Time savings.
  • Improved durability.
  • Disadvantages:
  • New technology to Oklahoma.
Consider alternate foundation types and load testing. Use self consolidating concrete for drilled shafts.
  • Micro-piles are faster and can use smaller equipment for installation. Load testing needs to be completed during the design phase.
Advantages:
  • Optimize design.
  • Disadvantage:
  • New technology to Oklahoma.
Consider giving prequalified contractors advanced plans and shorten bid time.
  • Provide 60 percent plans to pre-qualified contractors. Conduct constructability meetings to get contractor input.
Advantages:
  • Allows reduction in formal bid time.
Reduce the number of contracts.   Advantages:
  • Saves time.
  • Increases competition.
  • Minimizes soil movement.
  • Reduces conflicts between contractor.
  • Disadvantages:
  • Eliminates small contractors.
Eliminate shop drawings for prestressed girders.
  • Use plan details to the maximum extent possible. Fabricate girders to plan details unless contractor elects to make revisions.
Advantages:
  • Save time and review efforts.
Conduct a formal bridge type study.
  • For each bridge site compare alternative spans, structure types, foundation types, etc., relative to cost and construction duration to determine the best structure for each location.
  • Functional plans reflect a wide variety of structure types, unusual framing conditions, unusually close beam splicing, severe skew angles, short and variable span lengths, and large number of substructure units. Time savings, economy, and increased durability may be achieved by longer spans, standardization of structure types, and limiting skew angle.
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Updated: 11/06/2013
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000