I-90 Pavement Rehab VE Study

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1 I-90 Pavement Rehab VE Study Using Value Analysis to Select Project Delivery Method Ken L. Smith, PE, CVS

2 The week may have started with a bang But it ended with a success Do not drink and drive while texting

3 Project location I-90 Corridor RP 54.6 and 87.8 (WB) 33.2 miles

4 Project Background Road was generally built in the 1970 s 9 Reinforced Concrete Pavement 27 panels, skewed joints Edge drains added late 80 s 1st bit overlay in mid 90 s, Some areas on 2nd bit mill and overlay in mid 2000 s

5 Project Background Areas with overlays in 2000 s doing good, 1990 s vintage 3 overlays have rutting issues in driving lane only Underlying concrete joints are very bad reflecting through in 3 O/L areas, not so much in 4.5 areas. Highly uneven lane distribution doing a lot of mill and inlays in driving lane because they re rutting out before passing lane. WB RP Bit Mill and Overlay - not much cracking EB RP Bit Overlay. Note reflective cracking and rutting

6 Base Case BASE CASE 7.5" UNBONDED CONCRETE OVERLAY SHOULDER PROPOSED TGL 1" PASSRC OUTSIDE SHOULDER 4" BIT EXISTING GROUND 26"-27" PCC AGG. BASE 8"-9" 6" BIT RECLAIM SUBBASE 12" 8" 8" 4' 24' 1' 9' Drawing not to scale.

7 Project Constraints + Assumptions (from the project team) CO has programmed FY 15 work as concrete and FY 17 work as bituminous based on funding constraints and statewide pavement investment goals. Cannot change surfacing type. District has programmed work as design-bid-build with consultant delivery for FY 15 work. Changing delivery type may impact existing consultant contract and have schedule or cost implications. Funding is for pavement preservation. No funding is available for safety/bridge/drainage/etc. beyond what is typically included with a pavement project.

8 Project Risks/Opportunities Funding may change (budget opportunity), requiring changes to plan (schedule/scope risk) Project Delivery Plan Process (Streamlined Plan?) Change Management D7 is delivering about 3x a normal program in FY 15/17 (workload risk). We re at about 1x normal program in FY 16 (opportunity?). Trying to ELLA or AC Lot of details about pavement to work out Edge drains? Shoulder treatment? Transitions at ramps, under bridges?

9 The Process The success came from pre-planning Two teams and two team leaders Pavement sections Delivery methods Splitting the VE Job Plan Large centralized team Investigation Speculation Evaluation Smaller team Development Presentation 21 team members 5 team members

10 Performance Attributes - Pavement Establishing the Goals and Objectives of VE Study is critical to its outcome. Defining Performance Attributes gave the VE Team a better understanding of the project s purpose and need. Typical Highway Performance Attributes Mainline Operations Local Operations Maintainability Construction Impacts Environmental Impacts Project Schedule

11 Selecting the Delivery Method

12 MnDOT project delivery selection process PROJECT DELIVERY METHOD OPPORTUNITY/OBSTACLE SUMMARY DBB DB CMGC Primary Evaluation Factors 1. Delivery Schedule Project Complexity & Innovation Level of Design Cost Perform Initial Risk Assessment Secondary Evaluation Factors 6. Staff Experience/Availability (MnDOT) P P P - 7.Level of Oversight and Control P P P 8. Competition and Contractor Experience P+ P P

13 Using VE tools to select Delivery Method Five of the twenty four delivery methods floated to the top from the evaluation from the lager team.

14 Alternative Delivery Methods Evaluated DBB (Design Bid Build) DBB Fixed Cost Variable Scope DB (Design Build) CMGC (Construction Manager General Contractor) Design Bid Build with options

15 Performance Measures Performance Attribute Project delivery schedule Project Complexity & Innovation Description of Attribute Must be awarded by 6/30/2015 to keep the funding Construction completion date is not a deciding factor at this time Fairly simple project to rehab the existing pavement. MOT low enough ADT to allow head to head one lane in each direction. Ability to close ramps for long durations with ample detours. Cost and Budget Could have up to $35M available, risk of not under construction by 6/30/2015. Staff Experience/Availability (MnDOT) Competition and Contractor Experience Risk District 7 has limited experience in alternative delivery. There are limited resources for project delivery in the district. Since this is a pavement rehab projects the typical contractors has the most experience in DBB as a prime. They have experience in alternative delivery as a subcontractor. Risks of cost over runs and under runs.

16 Paired Comparison

17 Scoring the Alternative Delivery Methods

18 Documenting Scores Design Build Standard Performance Attribute Project delivery schedule Project Complexity & Innovation Cost and Budget Staff Experience/ Availability (MnDOT) Competition and Contractor Experience Description of Attribute Design Build Score Must be awarded by 6/30/2015 to keep the funding Construction completion date is not a deciding factor at this time Fairly simple project to rehab the existing pavement. MOT low enough ADT to allow head to head one lane in each direction. Ability to close ramps for long durations with ample detours. could have up to $35M available, risk of not under construction by 6/30/2015. District 7 has limited experience in alternative delivery. There are limited resources for project delivery in the district. Since this is a pavement rehab projects the typical contractors has the most experience in DBB as a prime. They have experience in alternative delivery as a subcontractor. Can use a GEC to assist with procument documents will still need to design to about 30% and develop the RFP. Lack of district resources will increase RFP development schedule. 10 Typically design build encourages innovation. Opportunities for innovation are limited on an unbonded overlay - MnDOT typically doesn't allow DB contractor to propose pavement designs. Limited advantages for MOT innovation due to low volumes of traffic on I- 90. ATC's are a common practice for designbuild could bring forth innovation that cannot be foreseen at this time. 8 With DB - transferring risk to contractor, that may increase costs. Have a difficult time estimating costs for professional/technical services associated with design build; but after letting costs are generally fixed - lump sum contract. Additional cost to get to preliminary plans to prepare RFP. 6 No D7 staff available with experience delivering design build projects. Limited staff availability to prepare RFP documents. Plan to augment staff with experienced consultant for preconstruction, no known utility and ROW requirements. The MnDOT staff has limited availability through Will need to augment staff with consultants for construction oversight. No resources available for construction surveying. 4 Multiple contractors capable of doing design build, however few concrete paving contractors have previous experience as a prime contractor on design-build contracts. Large contractor with D-B experience may sub concrete paving out. 6 Risk Risks of cost overruns and under runs. Design build typically has less SA's/CO's. This project has minimal risk. 8

19 Results

20 Data Builds Consensus The same Project Manager that kicked off the week with the statement This will be a design Bid Build project, it is the bread and butter of what we do. Presented on Friday This project is an ideal candidate for Design Build and I am looking forward to delivering my first Design Build project.