Post on 25-Apr-2020
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VDOT DESIGN & CONSTRUCTION GUIDELINES
RECENT UPDATES – BRIDGE SPECIFICATIONS
Kendal R. Walus, PE
State Structure and Bridge Engineer
VIRGINIA CONCRETE CONFERENCE 2019
February 28, 2019
• 2018 NSBA Prize Bridge Award
• Short Span Category
• 1st Bridge in USA to Use 50CR for:
• Tapered Girder Webs
• Cross Frames
• Stainless Steel High Strength Bolts
2018 National Steel Bridge Alliance Award
Virginia Department of Transportation
Route 340 over South River – Waynesboro, Virginia
Staunton District
• 2018 PCA Concrete Bridge Award
• 1 of 8 Winners in USA
• Recognition of Creativity and Imagination
in the Structural, Functional, Aesthetic,
Sustainable and Economic Design
• 1st Bridge in USA to Use CFRP for:
• All Reinforcement in Bulb-T Beams
2018 PCA Bridge Design Award of Excellence
Virginia Department of Transportation
Route 49 over Aaron’s Creek – Halifax County, Virginia
Lynchburg District
• 2018 Roads & Bridges Top 10 Bridges
• Longest Steel Jointless Bridge in VA
• Use of Virginia Abutment
• Use of Low Shrinkage Concrete (before
2016 Specs)
• Alternate Foundation Design
• Innovative Construction Details
Roads & Bridges 2018 Top 10 Bridges - 6th Place
Virginia Department of Transportation
Route 340 over South Fork Shenandoah River - Front Royal, Virginia
Staunton District
2018 ACI Excellence in Concrete Construction
Virginia Department of Transportation
• Won in Both the Category “Infrastructure” as well as the Commonwealth Award
• First Bridge in Commonwealth to use the New Adjacent Member Connection Detail
• Innovative Connection that Effectively Transfers the Loads Transversely
• Filling Material, Very High Performance Concrete (VHPC)
• Significantly Reduces the Lap Splice Length for the Steel Reinforcement
Route 744 over Bluestone River - Tazewell County, Virginia
Bristol District
2019 ACEC Virginia’s Engineering Excellence Awards
Virginia Department of Transportation
• 2019 Honor Award Category
• Context Sensitive Design
• Diverging Diamond Interchange
• Architectural Treatment
• Successful Incorporation of Concrete Bridge Panel
Southgate Drive over Route 460 – Blacksburg, Virginia
Salem District
• Assistant S&B Engineers• Project Delivery– Prasad Nallapaneni
• Engineering Services – Junyi Meng
• Maintenance – Adam Matteo
• Safety Inspection – Chris Williams
• District Bridge Engineers:• Bristol – Gary Lester
• Culpeper – Teresa Gothard
• Fredericksburg – Annette Adams
• Hampton Roads – Mohamed Ali
• Lynchburg – Frank Lukanich
• Northern Virginia – Gary Runco
• Richmond – Jeff Hill
• Salem – Dean Hackett
• Staunton – Rex Pearce
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Structure and Bridge Division
S&B Strength:• Admin/Program
Management/Design = 145
• Safety Inspection = 127
• Bridge Maintenance = 291
• Grand Total = 563
• VDOT’s Bridge Performance Measure
• Total Number of Non-SD NBI and All Structures > 95.5%
• 0.5% Condition Improvement of Bridge Joints in Condition States 1 & 2
• 0.5% Reduction in the Number of NBI and All Structures with a Minimum General Condition Rating 5
(Fair) by July 1, 2019
• 15% Reduction in the Number of Fracture Critical Structures
• FHWA - % Deck Area of SD (Poor) NBI NHS Structures < 10.0%; VDOT Goal = 3.0%
• FHWA - % Deck Area of Good (GCR =>7) NBI NHS Structures; VDOT Goal = 33.0%
• VDOT is Undergoing a Comprehensive Review of Performance Measures – July 2019
PERFORMANCE MEASURES
Virginia Department of Transportation
Continual Improvement – Non-SD Structures Trend
Virginia Department of Transportation
No
. Go
od
/Fai
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9,1
49
No
. Go
od
/Fai
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No
. Go
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/Fai
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37
No
. Go
od
/Fai
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9,5
95
No
. Go
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/Fai
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46
No
. Go
od
/Fai
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9,8
44
No
. Go
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/Fai
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0,0
24
No
. Go
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/Fai
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0,2
09
No
. Go
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/Fai
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0,3
10
91.8%92.0%
92.4%
93.2% 93.2%
93.9% 94.7%
95.6%
96.0%
93.2%
93.8%
93.4%
95.2% 95.1%
95.7% 95.7%96.0%
96.2%
87.0%
88.0%
89.0%
90.0%
91.0%
92.0%
93.0%
94.0%
95.0%
96.0%
97.0%
18,000
18,500
19,000
19,500
20,000
20,500
21,000
06/2010 03/2011 04/2012 01/2014 07/2014 07/2015 07/2016 07/2017 07/2018
% S
truct
ure
s in
Go
od
/Fai
r C
ond
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n
Num
ber
of
Str
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ure
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Chart 2 - Percentage of Non-SD Structures Statewide by Count and Deck Area (Nine Year Trend)
No. Good/Fair Good/Fair % by Count Good/Fair % by Deck Area
Based on FY2018 Data
VA Responsible Structures
Continual Improvement – SD Structures Trend
10Based on FY2018 Data
VA Responsible Structures
No
. SD
1,7
16
No
. SD
1,6
68
No
. SD
1,5
99
No
. SD
1,4
37
No
. SD
1,4
33
No
. SD
1,2
98
No
. SD
1,1
22
No
. SD
94
1
No
. SD
84
4
8.2%8.0%
7.6%
6.8%6.8%
6.1%
5.3%
4.4%
4.0%
6.8%
6.2%
6.6%
4.8% 4.9%
4.3% 4.3%4.0%
3.8%
0.0%
1.0%
2.0%
3.0%
4.0%
5.0%
6.0%
7.0%
8.0%
9.0%
-
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
06/2010 03/2011 04/2012 01/2014 07/2014 07/2015 07/2016 07/2017 07/2018
% S
tru
ctu
res
in P
oo
r/SD
Co
nd
itio
n
Nu
mb
er o
f St
ruct
ure
s in
Po
or/
SD C
on
dit
ion
No. SD SD % by No. Structures SD% by Deck Area
Continual Improvement – Non-SD Structures Trend
11Based on January, 2019 Data
VA Responsible Structures
94.9% 95.1% 95.3% 95.6% 95.7% 95.9% 96.0% 96.1% 96.3%
94.2% 94.3% 94.5% 94.7% 94.9% 95.1% 95.3% 95.5%95.6%
90%
92%
94%
96%
98%
100%
Percentage of Non-Deficient Structures Graph of Recent Progress
All StructuresNBI OnlyTargetDecember 31, 2018 - 95.5%
Statewide Target for All Bridges & Culverts, and NBI Structures
• 2018 Bridge Crew Accomplishments
• Performed Preventative Maintenance on over 3,473 Bridges
• Rehabilitated 84 Structurally Deficient Bridges
• Replaced 83 Structurally Deficient Bridges
Maintenance and Bridge Management
Virginia Department of Transportation
• Implementation of New Technologies:
• Continuous Spans for New Bridges – 1970’s
• Latex Modified Concrete Deck Overlays – 1970’s
• Three Coat Zinc Based Paints – 1982
• High Performance Concrete in All Bridge Elements - 2003
• Corrosion Resistant Reinforcing Steel – 2008
• Jointless Bridge Technology – 2011
• Self Consolidating Concrete for Drilled Shafts - 2015
• Low Shrinkage Concrete in Bridge Decks – 2015
• Latex Modified Overlays Using Hydro Demolition – 2015
• Carbon Fiber and Stainless Steel Prestressing Strands in Piles – 2017
• Inverted Tee Beam - 2017
• Corrosion Resistant Structural Steel (Grade 50CR) – 2018
• Elastomeric Concrete Plug Joints - 2018
• Engineered Cementitious Concrete for Steel Culvert Repairs - 2018
Minimize Long Term Maintenance Costs
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Minimize Long Term Maintenance Costs
• Design
• Jointless Design
• Use Virginia Abutment and Pier Details
• Eliminate Joints Where Possible
• Closures
• Deck Extensions
• Corrosion Resistant Reinforcing Steel
• Low Shrinkage Concrete in Bridge Decks
Minimize Long Term Maintenance Costs
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• Closure Pours and Overlays
I-64 Over Dunlap Creek – Staunton District
• Prestressed Concrete Piles and Adjacent Box Beam Changes
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Minimize Long Term Maintenance Costs
• New Virginia Adjacent
Member Connections
(VAMC) for Prestressed
Concrete Slabs
• New Prestressed Concrete Pile
Standards using Stainless
Steel and Carbon Fiber Strands
• Carbon Fiber/Stainless Steel Prestressing Strands
Minimize Long Term Maintenance Costs
Nimmo Parkway – 18 Piles Virginia Beach, Virginia
Hampton Roads District
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Minimize Long Term Maintenance Costs
Route 49 over Aaron’s Creek - Lynchburg District
• Carbon Fiber Prestressing Strands for Bulb Tee Beams
Minimize Long Term Maintenance Costs
PTFE Fabric on Steel Plate Elastomeric Concrete Placement
• Elastomeric Concrete Plug Joints
• Inverted Tee Beam Standard
• Up to 45 Feet
• Improved Constructability
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Minimize Long Term Maintenance Costs
• Concrete Slab Solutions
Minimize Long Term Maintenance Costs
Virginia Department of Transportation
• Rolled Beam Timber Deck Replacement
Minimize Long Term Maintenance Costs
Virginia Department of Transportation
Route 654 over Maxey Mill Creek
Lynchburg DIstrict
• Rolled Beam Timber Deck Replacement
Minimize Long Term Maintenance Costs
Virginia Department of Transportation
Route 677 over Allen Creek
Richmond District
• Engineered Cementitious Concrete Culvert Repair
Being Cost Effective – Stretching Tax Dollars
Virginia Department of Transportation
• Updates:
• Chapter 7 - Reinforcing Steel
• Development and Lap Lengths using AASHTO LRFD Bridge Design Specifications 8th Edition
• New Barrier Rail – CPSR (Concrete Parapet Steel Rail) Series
• Replaces BR27 Series
• MASH Crash Tested
• Test Level 4
• Precast Concrete Beam Standards
• Added Design Camber at Erection Requirements
• Recognized and Incorporated Industry Guidance
• IIM S&B 80.6 – VDOT Modifications to AASHTO Update
• AASHTO LRFD Bridge Design Specifications 8th Edition
• Design yield strength of 75 ksi for all types of CRR when Used in Box Culverts and Rigid Frames
Updates to Design Guidelines & Bridge Specifications
Virginia Department of Transportation
• Chapter 8 – Bridge Layout:
• Use of Centerline of Bearings
• Reference Working Line When Chord is Not Appropriate
• Provides Numerous Curved Bridge Layout Examples
• Updates Substructure Layout Examples
• Updates Slope Protection Details
Updates to Design Guidelines & Bridge Specifications
Virginia Department of Transportation
• Chapter 14 – Joints:
• Class I, II and III Adhesive Based Joint Sealer
• Elastomeric Expansion Dam – Conformance with Industry Standard
• Asphalt Plug Joint
• Flexible Concrete Plug Joint
• Remember – No Joint is the Best Joint!
Updates to Design Guidelines & Bridge Specifications
Virginia Department of Transportation
Class I Class IIIClass II
Expansion Dam
Asphalt Plug Joint
Flexible Concrete
Updates to Design Guidelines & Bridge Specifications
Virginia Department of Transportation
• IIM S&B 96 – Lead Exposure Safety Directive:
• VDOT’s Lead Exposure Control Program Manual – September 2018
Updates to Design Guidelines & Bridge Specifications
Virginia Department of Transportation
• Upcoming Items Heading Your Way:
• Single Slope Concrete Parapet (SSCP) Standard
• MASH Crash Tested
• Guidance on Box Culvert Wingwalls
• Guidance on Climate Change for Bridge Design
• Updating Special Provisions on ECC and VHPC
• To Include Bagged Materials
• Special Provision for Superstructure Erection Stability
• Concrete and Steel Main Members
• IIM to Designers on Superstructure Erection Stability
Culvert Wingwall Problems
Virginia Department of Transportation
Wingwall Collapse
Wingwall Sliding
Undermining
Culvert Wingwall Problems
Virginia Department of Transportation
Wingwall Rotation
Settlement Failure
• Why is this Occurring?
• Who is Responsible?
• What can we do to Prevent this from Happening?
• What is VDOT’s Plan?
• Reviewing Current Practice
• Reviewing Standard Requirements
• Reviewing Design Specification Requirements
• Working with District and Central Office Engineers
• Working with Industry
Culvert Wingwalls
Virginia Department of Transportation
• Wingwall Designs Must be Engineered Correctly
• VDOT is Implementing New Technologies in Bridge and Culvert Design
• It is Important to Stay Informed with these Changes
• We Expect You to Incorporate the Guidance into Plan Sets
• VDOT is Focused on Minimizing Long Term Maintenance Costs
• Thank You for Your Cooperation!
Summary