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House Transportation Appropriations Committee May 23, 2019Matthew J. Chynoweth, MDOT Chief Bridge Engineer

• MDOT Bureau of Bridges and Structures• Bridge Regulations, Funding, and Asset Management• Bridge Design• Bridge Construction• Bridge Innovations/Achievements• Local Agency Bridge Bundling Initiative• Challenges and the future

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BOBS Vision and Values

Vision:

To be well-regarded as spanning and connecting lives, safely and efficiently

Bureau Strategic Objectives

Reduction in the

number of MDOT scourcritical bridges, through the use of new technology, mitigation

techniques, and

managing the riskprofile on an individual

project basis…

Improve initial bridge

and structure design,

fabrication and

constructionquality on all projects,

while focusing on constructability and lifecycle

durability and resiliency.

Overall structural expertise proficiency

in the bridge design and

construction areas,

along with knowledge management, leadership

development, and an overall broad perspective of “bridge

birth”.

Improve quality of Local Agency Bridge

Inspections, Load Ratings, and overall

Bridge Management.

Improve overall network condition – Bridge Bundling

Reduction in the

number of open Bridge Requests for Action (RFA), and

annual utilization of the Bridge Priority Preservation Funding (BPPF) template in achievement of condition

goals.

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Code of Federal Regulations:§ 650.307 Bridge inspection organization.

(a)Each State transportation department must inspect, or cause to be inspected, all highway bridges located on public roads that are fully or partially located within the State's boundaries, except for bridges that are owned by Federal agencies.

(c) Each State transportation department or Federal agency must include a bridge inspection organization that is responsible for the following:

(1) Statewide or Federal agency-wide bridge inspection policies and procedures,quality assurance and quality control, and preparation and maintenance of a bridge inventory.

(2)Bridge inspections, reports, load ratings and other requirements of thesestandards.

Code of Federal Regulations:§ 650.315 Inventory.

(a) Each State or Federal agency must prepare and maintain an inventory of all bridges subject to the NBIS. Certain Structure Inventory and Appraisal (SI&A) data must be collected and retained by the State or Federal agency for collection by the FHWA as requested. A tabulation of this data is contained in the SI&A sheet distributed by the FHWA as part of the “Recording and Coding Guide for the Structure Inventory and Appraisal of the Nation's Bridges,” (December 1995) together with subsequent interim changes or the most recent version. Report the data using FHWA established procedures as outlined in the “Recording and Coding Guide for the Structure Inventory and Appraisal of the Nation's Bridges.”

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Our State’s Bridges:

Count Area ADT Count Area ADT

Local 6,633 18,229,259 17,305,522 226 2,469,926 4,780,655

MDOT 4,493 51,124,958 76,559,972 2,737 34,947,511 64,174,556

TOTAL 11,126 69,354,217 93,865,494 2,963 37,417,437 68,955,211

ALL BRIDGES NHS BRIDGES ONLY

MDOT Local Agency

Total Bridge Count 40.4% 59.6%

Total Bridge Area 73.7% 26.3%

Total Bridge ADT 81.6% 18.4%

NHS Bridge Count 92.4% 7.6%

NHS Bridge Area 93.4% 6.6%

NHS Bridge ADT 93.1% 6.9%

Bridge and Structure Asset Valuations:National Bridge Inventory:

• MDOT bridges = $21 billion

• Bridge Authorities = $1.2 billion

• Local Agency bridges = $14.1 billion

• Total = $36.3 billion Michigan bridge asset value

Ancillary Structure Asset Quantity UnitReplacement

CostTotal

Sign Cantilever 815 each $125,000 $101,875,000

Communication Tower 22 each $1,255,000 $27,610,000

Dynamic Message Sign (DMS) Support Structure

264each $85,000 $22,440,000

Environmental Sensor Station (ESS) Lattice Tower

86each $25,000 $2,150,000

Lighting Tower 79 each $20,000 $1,580,000

Noise Barrier Wall 347,533 ft $1,000 $347,533,000

Retaining Wall 188,035 ft $10,000 $1,880,350,000

Spun Concrete Pole 270 each $55,000 $14,850,000

Steel Strain Pole 377 each $10,000 $3,770,000

Sign Tri-chord Truss 511 each $200,000 $102,200,000

Culverts less than 10' 51,000 each $50,000 $2,550,000,000

Total $5,054,644,000

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Overall Bridge Funding:$99

$148

$143

$196

$185

$201

$208

$194

$270

$209

$185

$191

$269

$218

$172

$194

$245

$178

$244

$152

$314

$213

$198

$198

$198

$198

$198

$198

$198

$198

$198

$198

$198

$198

80.0%

77.2%

79.8%

84.1%

89.3%

94.5%95.1% 94.7%

94.3%

93.2%

91.4%90.5%

70%

75%

80%

85%

90%

95%

100%

$0

$50

$100

$150

$200

$250

$300

$350

1997199819992000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024202520262027202820292030

Perc

en

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rid

ges i

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oo

d &

Fair

Co

nd

itio

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Fu

nd

ing

in

Millio

ns

MDOT Bridge Conditions and Funding Levels

Funding Measured Condition Projected Condition

Measured Bridge Condition Projected Bridge Condition

Condition comparison in 1997:

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Condition comparison in 2018:

Strategic Investments:

Bridge Conditions - MDOT Bridges - Percent Good/Fair/PoorYear Good Fair Poor2004 26.46% 56.90% 16.64%2005 26.49% 56.89% 16.62%2006 26.92% 57.80% 15.28%2007 27.71% 59.05% 13.25%2008 29.90% 58.43% 11.66%2009 30.91% 58.78% 10.30%2010 31.99% 58.74% 9.26%2011 32.21% 59.67% 8.13%2012 33.57% 60.39% 6.04%2013 34.41% 60.24% 5.35%2014 33.57% 60.79% 5.65%2015 33.83% 60.23% 5.94%2016 33.61% 61.35% 5.04%2017 32.19% 62.87% 4.94%2018 27.85% 66.73% 5.43%

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Comparison to other Great Lakes States:

State Area (ft2) Total Cost (dollars)

Michigan 297,180 $58,951,467

Minnesota 443,954 $98,236,858

Ohio 840,559 $143,863,151

Indiana 207,997 $58,961,307

Illinois 466,803 $80,039,793

Wisconsin 951,564 $130,097,321

39.9%

26.7%

31.0%

49.4%

68.2%

63.0%

10.7%

5.0%

6.0%

0% 20% 40% 60% 80% 100%

All Bridges

Interstate

NHS

Michigan Bridges

Good Fair Poor

61.8%

45.9%

53.3%

33.2%

51.4%

44.7%

5.0%

2.6%

2.0%

0% 20% 40% 60% 80% 100%

All Bridges

Interstate

NHS

Minnesota Bridges

Good Fair Poor

58.6%

64.2%

63.6%

35.9%

34.9%

34.8%

5.6%

0.9%

1.6%

0% 20% 40% 60% 80% 100%

All Bridges

Interstate

NHS

Ohio Bridges

Good Fair Poor

41.3%

52.7%

52.4%

52.5%

45.5%

45.3%

6.2%

1.8%

2.3%

0% 20% 40% 60% 80% 100%

All Bridges

Interstate

NHS

Indiana Bridges

Good Fair Poor

50.1%

29.1%

36.2%

41.4%

63.7%

55.6%

8.5%

7.2%

8.2%

0% 20% 40% 60% 80% 100%

All Bridges

Interstate

NHS

Illinois Bridges

Good Fair Poor

51.7%

49.1%

55.1%

40.9%

48.1%

42.5%

7.4%

2.7%

2.4%

0% 20% 40% 60% 80% 100%

All Bridges

Interstate

NHS

Wisconsin Bridges

Good Fair Poor

Bridge Design• National Design Truck weight = 36 tons

• MDOT design truck = 1.2 * 36 tons = 45 tons

• MDOT has been designing bridges for heavier truck loads since the 1970’s

• Typically 5% - 10% additional construction cost

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Bridge Construction

•Accelerated Bridge Construction Projects

•Complex Bridge Construction Projects

US-131 over 3 Mile Road Bridge Slide

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M-50 over I-96

Bridge Slide

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M-50 over I-96

Bridge Slide

Zilwaukee Bridge

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Jack locations change the bearing location and designed load flow path

Pier diaphragms are overstressed upon application of jacking

Finite model analysis was used to determine additional compression needed in segments to not exceed principle tensile stresses during jacking

Zilwaukee Bridge

Additional transverse post tensioning is needed near the centroid of the pier diaphragm

Additional compression is also required at the top of the pier column to confine the tension tie that develops from the center of the jacking plates to the center of the column

Zilwaukee Bridge

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Zilwaukee Bridge

Zilwaukee Bridge

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Zilwaukee Bridge

Zilwaukee Bridge

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Zilwaukee Bridge

Project statistics:

Original negotiated contract cost = $35,974,257 Final contract cost = $35,993,783 Total net change amount = $19,526 Total net change = 0.05%

Cored 1464 holes in the NB & SB structures, nicked 1 wire of a 12 strand post tensioning tendon near Pier 22S, which resulted in a 0.21% reduction in capacity at that location – negligible

300 RFIs and material submittals

Expansion hinge lifts – 3 million lbs, 16 times Pier lifts – 10 million to 15 million lbs, 49 times

1.2 million lbs of structural steel (plates, PT bars, beams) needed to temporarily reinforce the structure for jacking

Zilwaukee Bridge

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Rouge River Bridge

Rouge River Bridge

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Rouge River Bridge

Deck replacement, with some superstructure and substructure repairs. Other large bridges such as Fort Street and Goddard Avenue included

Project was let in November 2016, at a cost of $150 million

Project was complete in 2018

Rouge River Bridge

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US-2 over Cut River

Inspection and Load Rating

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LiDAR Survey was used to determine displacements of plates

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Steel Strengthening

MDOT CFRP prestressing/post tensioning deployments

Pembroke Ave over M-39 (2011)

M-50 over NS Railroad (2012)

M-102 EB and WB over Plum Creek (2013 – 2014)

I-94 EB & WB over Lapeer Road (2014)

M-100 over Sharp Drain (2015)

M-66 over West Branch River (2015)

M-86 over Prairie Creek (2016)

I-75 SB over Sexton-Kilfoil Drain (2017)

M-3 over I-94 (2018)

Brush Street over I-94 (2018)

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MDOT CFRP prestressing/post tensioning deployments

MDOT CFRP prestressing/post tensioning deployments

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MDOT CFRP prestressing/post tensioning deployments

MDOT CFRP prestressing/post tensioning deployments

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MDOT CFRP prestressing/post tensioning deployments

CFRP fabrication facility opened in Michigan

National Influence

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M-25 over Mill Creek

Accelerated Bridge

Construction

Local Agency Bridge Bundling Initiative

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Local Agency Bridge Bundling Initiative

Local Agency Bridge

Bundling Initiative

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Local Agency Bridge Bundling Initiative

Constant Challenges…

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Constant Challenges…

Some difficult times…

Courtesy of Sun Sentinel

Courtesy of Sun TIME Magativel

Courtesy of Wall Street Journal

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“The transportation system is invisible, until it is no longer there. We make that system happen”

Kirk Steudle, former MDOT Director

“We are at our best, when we do our jobs, and no one notices”

Rebecca Curtis, MDOT Deputy Chief Bridge Engineer

The future

Thank you for your time

Questions?

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