State and Local Partnership in Research for Transportation Development

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State and Local Partnership in Research
 
IHRB RESEARCH PROGRAM OVERVIEW
COUNTY ENGINEERS RESEARCH FOCUS
GROUP
SHORT SPAN PRECAST BRIDGE STANDARDS
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Research
 
1949 – Legislature established the Secondary
Road Research Fund in the Iowa Code
Iowa DOT has oversight of the funds
Highway Commission allocated funding for Primary
Road Research
IHRB – advisory board to the DOT
1989 – Legislation allocates municipal funds
for city
 
15 members
7 County Engineers
4 Iowa DOT
2 City Engineers
2 University Representatives
Alternate members
 
IHRB (State) ~ $2.2M
~ $1.2M County
~$750K State
~$200K City
 
Areas of Research:
Aggregate and Geotechnical
Pavement Management/Engineering Data
R.O.W/Roadside Management
Hydraulics/Hydrology/Drainage
Materials
Maintenance
Pavements
Policy, Specs, Economic, Legal
Bridges and Structures
Social/Environmental
Traffic and Safety, Operations
 
 
 
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To provide a forum to share day to day
challenges - Round Table Discussions
Share low-cost, innovative solutions to
meet these challenges
Brainstorm and prioritize ideas for
possible research projects – IHRB
 
 
 
Standards for abutments for precast bridges
Standards for abutments for precast bridges
 
Scope of the project evolved to include other
Scope of the project evolved to include other
precast elements to creating a set of standards
precast elements to creating a set of standards
for complete precast short span bridges.
for complete precast short span bridges.
 
24'-0 to 30'-0 wide roadway
Skews 0º-0, 15º-0, and 30º-0
Span Lengths 30’-0, 40’-0, 50’-0, 60’-0, 70’-0 – Precast Concrete
beams (prestressing only in spans which require it)
Consider voided box beams
Consider the weight of the beams due to concerns with moving and
placing the beams when weights start to exceed 45,000 lbs.
Beams could be strengthened transversely with threaded rod.
Precast abutments as well as details for option to do cast-in-place
abutments on pile foundations.
 
 
TR-663 – Short Span County Precast Bridge
Standards – 3 phases
Consultant Develop Concept
ISU Bridge Center to test any details if needed
Develop Full set of standards
 
Vanessa Goetz
Secondary Road Research
Research and Analytics, Iowa DOT
515-239-1382
Vanessa.goetz@dot.iowa.gov
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The Iowa Department of Transportation collaborates with state and local partners through the Iowa Highway Research Board to oversee funding and conduct research programs focusing on various areas including pavement management, bridge standards, and traffic safety. The program involves county engineers, Iowa DOT representatives, city engineers, and university members to address challenges and innovate solutions for transportation infrastructure development.


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  1. State and Local Partnership in Research IOWA DEPARTMENT OF TRANSPORTATION

  2. OUTLINE IHRB RESEARCH PROGRAM OVERVIEW COUNTY ENGINEERS RESEARCH FOCUS GROUP SHORT SPAN PRECAST BRIDGE STANDARDS

  3. Research PROGRAM OVERVIEW

  4. IOWA HIGHWAY RESEARCH BOARD 1949 Legislature established the Secondary Road Research Fund in the Iowa Code Iowa DOT has oversight of the funds Highway Commission allocated funding for Primary Road Research IHRB advisory board to the DOT 1989 Legislation allocates municipal funds for city

  5. IHRB 15 members 7 County Engineers 4 Iowa DOT 2 City Engineers 2 University Representatives Alternate members

  6. BREAKDOWN FUNDING SOURCES IHRB (State) ~ $2.2M ~ $1.2M County ~$750K State ~$200K City

  7. FOCUS OF RESEARCH PROGRAM Areas of Research: Aggregate and Geotechnical Pavement Management/Engineering Data R.O.W/Roadside Management Hydraulics/Hydrology/Drainage Materials Maintenance Pavements Policy, Specs, Economic, Legal Bridges and Structures Social/Environmental Traffic and Safety, Operations

  8. COUNTY ENGINEERS RESEARCH FOCUS GROUP

  9. GOALS To provide a forum to share day to day challenges - Round Table Discussions Share low-cost, innovative solutions to meet these challenges Brainstorm and prioritize ideas for possible research projects IHRB

  10. STANDARDS FOR SHORT SPAN BRIDGES Standards for abutments for precast bridges Standards for abutments for precast bridges Scope of the project evolved to include other Scope of the project evolved to include other precast elements to creating a set of standards precast elements to creating a set of standards for complete precast short span bridges. for complete precast short span bridges.

  11. SHORT SPAN BRIDGES 24'-0 to 30'-0 wide roadway Skews 0 -0, 15 -0, and 30 -0 Span Lengths 30 -0, 40 -0, 50 -0, 60 -0, 70 -0 Precast Concrete beams (prestressing only in spans which require it) Consider voided box beams Consider the weight of the beams due to concerns with moving and placing the beams when weights start to exceed 45,000 lbs. Beams could be strengthened transversely with threaded rod. Precast abutments as well as details for option to do cast-in-place abutments on pile foundations.

  12. TR TR- -663 Standards Standards 3 phases Consultant Develop Concept Consultant Develop Concept ISU Bridge Center to test any details if needed ISU Bridge Center to test any details if needed Develop Full set of standards Develop Full set of standards 663 Short Span County Precast Bridge Short Span County Precast Bridge 3 phases

  13. THANKS! Vanessa Goetz Secondary Road Research Research and Analytics, Iowa DOT 515-239-1382 Vanessa.goetz@dot.iowa.gov

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