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TEA, Portland, Maine Travis Koestner
Missouri Department of Transportation
October 20, 2006
Alternate Paving Update
$$ Cost Control at MoDOT $$
• Concept: Meeting our customers’ needs through sound engineering judgment.
• Practical Design = Chevrolet vs. Cadillac
• Means building good – not great – projects to improve more of our system.
• We’re trying to make projects better – not perfect.
• We want to be flexible and build only what’s needed to solve a specific problem at a specific location.
• Missouri has a very large and diverse highway system - 32,000 miles of road; 10,000 bridges.
• Our highway system ranges from 10-lane urban interstates carrying 200,000 cars a day to two-lane rural roads carrying 200 cars a day.
• This is why the “one size fits all” philosophy doesn’t work.
• Have been too rigid in designing to standards for standards’ sake.
• This has created a “more is better” mentality - had become the design culture at MoDOT.
• Created a comfort zone – everyone (designers, lawyers) felt safe with excessive standards.
• Our Practical Design philosophy has two ground rules:
• Every project will be safer.
• We will collaborate on solutions.
• First brush of Practical Design in December 2004, we reduced the cost of projects in our five-year construction program by more than $400 million.
• That’s an average cost reduction of 13 percent per project.
• Savings are equivalent to a five-year, three-cent gas tax increase.
• As an incentive, the districts get to spend the cost savings they generated for additional projects.
• Additional improvements statewide will mean fewer fatalities and injuries.
• Fewer fatalities and injuries makes the Practical Design approach very defensible and easy to explain in court.
• It’s easier to defend conscious engineering judgment than “cookbook” design.
• Reaction to Practical Design after two years has been very good.
• The public likes it – Missourians are frugal and want to see that their money is spent wisely – that’s why we’re known as the Show Me State.
• We’ve received good feedback from politicians and the industry.
• Toughest sell has been with our own employees – but our culture is quickly changing.
• Examples of changes we’ve made to our standards:– Facility selection is now based on level
of service rather than an arbitrary volume threshold.
– A range of lane widths can now be used.– We’re treating shoulders less like travel
lanes - allows for lower widths and thinner pavements.
•Project examples
• Route 54 will be realigned around major tourist city.
• Original scope: four lanes, divided highway, retaining walls.
• Revised scope: narrower medians, concrete barriers.
• Minimized grading and right of way costs.
• Original estimate: $136.5 million• Redesign: $ 99.0 million• Savings: $ 37.5 million
Original R/W line
Redesigned R/W line
• Deteriorating box culvert needs to be replaced.
• Original scope called for a bridge and 1,500 feet of road reconstruction.
• Revised scope calls for wider culvert.
• Reduces roadway improvements, right of way.
Original estimate: $1.35 million
Redesign: $284,000
Savings: $1.06 million
• Original job estimate on this bridge replacement was based on relocation.
• By closing the road and replacing it on existing alignment, we save right of way, grading and paving costs.
Original estimate: $660,000
Redesign: $420,000
Savings: $240,000
Original design
Redesign
• Practical Design has been so successful, we plan to make it our long-term design philosophy.
• We’re currently modifying our policy and design standards to reflect this philosophy.
• We also plan to explore using this same concept on our own facilities and equipment.
Alternate Paving Update50 Alternate Projects to Date ($705.0 mil)
45 Full Depth ($655.8 mil)
5 Rehabilitation ($49.2 mil)
Full Depth
20 Asphalt Awards ($296.7 mil)
25 Concrete Awards ($359.2 mil)
Rehabilitation
1 Asphalt Award ($2.6 mil)
4 Concrete Awards ($46.6 mil)
Alternate Pavement Update Low PC Bids vs. Low AC Bids LCCA Factor not Applied
PC Total – $345,318,000 AC Total - $350,702,000 Difference - $5,385,000 (1.56%)
Low PC Bids vs. Low AC Bids LCCA Factor Applied PC Total – $345,318,000 AC Total - $365,450,000 Difference - $20,132,000 (5.83%)
LCCA Factor has Determined Low Bid 2 Times since October 2003.
Alternate Pavement Update
Asphalt $/Ton
$47.99 $48.49
$41.68$40.92
$36.00
$38.00
$40.00
$42.00
$44.00
$46.00
$48.00
$50.00
2-yearAverage
2-year Non-Alt Average
2-year AltAverage
AlternateJobs Since.Oct. 2003
Alternate Pavement Update
Concrete $/CY
$130.60$149.96
$123.77 $114.34
$0.00$20.00$40.00$60.00$80.00
$100.00$120.00$140.00$160.00
2-yearAverage
2-year Non-Alt Average
2-year AltAverage
Alternate JobsSince. Oct.
2003
Alternate Pavement Update
3.88
5.12
3.64
0
1
2
3
4
5
6
FY2005 FY2006 Alt. Paving Projects Oct '03to Present
Bid
s/C
all
BOTTOM LINE MORE COMPETITION BETTER BIDS!