1. ABCD What’s New In Bridges
Tim Keller, P.E.
Administrator
ODOT Office of Structural Engineering
ABCD March, 2018

2. Agenda New Faces at OSE New Steel Provisions in 8th Edition LRFD
Vandal Fence Update
BDM Update
MASH Update
SMS Update
Rebar Discussion
Spread Box Discussion
Interesting Video
ABCD March, 2018

3. Personnel Changes Two members of OSE passed away last year
Scott Seeley
Bob Sliwinski
OSE has a new face
Jon Huffman
ABCD March, 2018

4. 8th Edition LRFD Specifications
8th Edition is published and available
Dated November 2017
AASHTO is updating LRFD Specifications every 3 yrs. with no interims
ABCD March, 2018

5. 8th Edition LRFD Specifications
AISC and NSBA have put together a nice presentation describing the changes in the Steel Provisions
NSBA will give a presentation at OTEC going into more depth.
ABCD March, 2018

6. New Steel Provisions LRFD
A few of the major changes are:
New Simplified Bolted Splice Procedure
Removed the 75% and average rules in for flexural members
New design procedure is in
NSBA has published an overview document and design examples
NSBA has a spread sheet available
ABCD March, 2018

7. New Steel Provisions LRFD
2. Introduction of ASTM F3125
Combines A325, A490, F1852, and F2280 into a single specification
Group A – 120 ksi min. tensile
Group B – 150 ksi min. tensile
ODOT will add a proposal note to deal with this in short term. Long term we will change all the references – will take a little time.
ABCD March, 2018

8. New Steel Provisions LRFD
3. Revised bolt resistance calculations in , , and Table
Generally, this will result in fewer bolts required for shear
4. New Article introduced
A. Designates where Charpy V-notch testing is required
ABCD March, 2018

9. New Steel Provisions LRFD
5. Increase the Fatigue Load Factors in Table Increase in Maximum Shear Connector Spacing in 6.17
ABCD March, 2018

10. Vandal Fence Update
Permanent VPF – BDM Section 305 requires installation of permanent VPF on most of our grade separations bridges when we are replacing the existing barrier.
Exceptions are bridges over County/Township routes
Exception process for fencing that will create a substandard site distance
ABCD March, 2018

11. Vandal Fence Update Temporary Vandal Fence District 2 incident
Stage construction only
New guidelines are coming out
Don’t mount temporary vandal fence on portable concrete barrier in high speed locations
Don’t mount temp. vandal fence on existing concrete barrier that is cracked and spalling
Preferred location is to mount temp. vandal fence on deck behind PCB (if room is available)
ABCD March, 2018

12. BDM Update 2018 OSE goal is to combine the two manuals.
Section 400 Rehabilitation and Repair - major changes
Rehabs will comply with LRFD Specs
Overlays – changes will include:
Adding treatments
Adding guidelines for picking treatments
ABCD March, 2018

13. MASH Update Self Certification has a new name - State Determination
Still waiting on FHWA guidance
ODOT submitted 2 to Division Office
Concrete median barrier which is un-reinforced (crash tested system but did not have final report before Jan. 1 implementation)
G/R with round wooden posts
ABCD Marcg, 2018

14. SMS Update
Proposals were submitted to ODOT for replacement of current SMS
Proposals are currently being evaluated
Target for 2018 – new system operating in an ODOT test environment
ABCD March, 2018

15. Mild Reinforcing Steel
Confused ?
What about:
Sales People in your ear?
Stainless
Clad
Epoxy Coated – is it performing well?
FRP
MMFX
Fusion bonded
ASTM A934
ABCD March, 2018

16. Spread Prestressed Box Beam Bridges
Use or not to use ?
Advantages and Disadvantages
Cross frames or no cross frames
Deck thickness
Details over piers
Overhangs or no overhands
ABCD March, 2018

17. Ironton Russel Bridge
ABCD March, 2018

18. Ironton Russel Bridge
ABCD March, 2018

19. Ironton Russel Bridge
ABCD March, 2018

20. Ironton Russel Bridge
ABCD March, 2018

21. Questions for me
ABCD February, 2018