Indiana Department of Transportation SEP 14 Report Alternate Pavement Type
Appendix I PR 69 (IR-33047)
This project was bid as a design build contract. INDOT let this project on mainline as an optional pavement section (HMA or PCCP) or the Contractor's alternate pavement section. INDOT received seven (7) bids (7 PCCP options, 5 HMA options, and 1 Contractor's alternate section). Five (5) Contractors participated in both HMA and PCCP pavement type options and one (1) Contractor participated in all three: HMA, PCCP, and the alternate pavement section.
INDOT provided the following pavement design thickness for mainline of this project:
- 11 inches of PCCP or
- 13 inches of HMA
The Contractor's alternate pavement section was 10 inches of HMA with a modified subgrade treatment (32 inches Lime Modification).
Bid Analysis Summary
| Bidders | Initial Bid | PW Cost for PCCP | Bid Analysis | ||
|---|---|---|---|---|---|
| A | $40,595,100.00 | + | $2,098,552.00 | = | $42,693,652.00 |
| B | $44,165,292.00 | + | $2,098,552.00 | = | $46,263,844.00 |
| C | $46,484,140.00 | + | $2,098,552.00 | = | $48,582,692.00 |
| D | $48,726,600.00 | + | $2,098,552.00 | = | $50,825,152.00 |
| E | $49,395,116.00 | + | $2,098,552.00 | = | $51,493,668.00 |
| F | $58,998,545.04 | + | $2,098,552.00 | = | $61,097,097.04 |
| G | $66,463,060.00 | + | $2,098,552.00 | = | $68,561,612.00 |
| Bidders | Initial Bid | PW Cost for HMA | Bid Analysis | ||
|---|---|---|---|---|---|
| A | $39,945,100.00 | + | $3,449,374.00 | = | $43,394,474.00 |
| E | $49,014,706.00 | + | $3,449,374.00 | = | $52,464,080.00 |
| D | $49,111,100.00 | + | $3,449,374.00 | = | $52,560,474.00 |
| F | $60,328,545.04 | + | $3,449,374.00 | = | $63,777,919.04 |
| G | $64,727,205.00 | + | $3,449,374.00 | = | $68,176,579.00 |
| Bidders | Initial Bid | PW Cost for Alt. HMA | Bid Analysis | ||
|---|---|---|---|---|---|
| F | $60,206,545.04 | + | $4,628,327.00 | = | $64,834,872.04 |
The low bid amount, out of all 7 bids, was for HMA option (Bidder A) and after adding PW cost of HMA, PCCP, and Contractor's Alternate HMA to the respective pavement type options, PCCP option was the low bid (Bidder A). PCCP option of Bidder A was awarded for this contract. The PW cost factor affected the outcome of the bidding.
INDOT is unable to compared the estimated cost of pavement pay items with actual low bid costs of all three pavement types since this contract was not let as an itemized proposal. All other pavement types such as S-lines in the bids were common to all pavement options.
Conclusion
INDOT did not realize a saving immediately, at the bid opening, (HMA Low Bid - PCCP Low Bid = -$681,450.00). However after using the Bid Analysis amounts (after PW costs applied), INDOT saved the tax payers approximately $768,372.00 over the 50 year service life of the pavement. These savings include the reduction of INDOT's consultant cost of $31,450.00 for producing two sets of typical plan sheets and quantities. The in-house costs for INDOT were determined negligible.
The PW cost for future maintenance did impact the bids and which contractor received the contract. INDOT believes using this process of alternate bids for pavement type selection on this project was very successful.
PW of Future Maintenance of the Pavement I-69 (IR-33047)
- Optional Pavement Section (INDOT)
- PW of HMA Section = $3,449,374.00
- PW of PCCP Section = $2,098,552.00
- Alternate HMA Pavement Section (Contractor)
- PW of Alternate Pavement Type (HMA) = $4,628,327.00
| Age in Years | Rehab. | Cost $ | Present Worth Cost $ |
|---|---|---|---|
| 3 | Joint Seal | 191,375.00 | $170,131.68 |
| 6 | Joint Seal | 191,375.00 | $151,246.44 |
| 9 | Joint Seal | 191,375.00 | $134,457.54 |
| 12 | Joint Seal | 191,375.00 | $119,532.26 |
| 15 | Joint Seal | 191,375.00 | $106,263.74 |
| 18 | Joint Seal | 191,375.00 | $94,468.08 |
| 20 | Mill and Functional Overlay | 3,927,083.00 | $1,792,269.42 |
| 23 | Joint Seal | 191,375.00 | $77,645.88 |
| 26 | Joint Seal | 191,375.00 | $69,026.90 |
| 29 | Joint Seal | 191,375.00 | $61,364.66 |
| 32 | Joint Seal | 191,375.00 | $54,552.96 |
| 35 | Mill and Resurface | 1,864,953.00 | $472,607.94 |
| 38 | Joint Seal | 191,375.00 | $43,114.00 |
| 41 | Joint Seal | 191,375.00 | $38,328.19 |
| 44 | Joint Seal | 191,375.00 | $34,073.62 |
| 47 | Joint Seal | 191,375.00 | $30,291.32 |
| Total HMA PW Cost $3,449,374.64 | |||
| Age in Years | Rehab. | Cost $ | Present Worth Cost $ |
|---|---|---|---|
| 8 | Reseal the Joint | 184,287.00 | $134,656.71 |
| 16 | Reseal the Joint | 184,287.00 | $98,392.34 |
| 24 | Reseal the Joint | 184,287.00 | $71,894.32 |
| 30 | Mill and Functional Overlay | 3,968,741.00 | $1,223,636.94 |
| 33 | Joint Seal | 191,375.00 | $52,454.77 |
| 36 | Joint Seal | 191,375.00 | $46,632.10 |
| 39 | Joint Seal | 191,375.00 | $41,455.77 |
| 42 | Mill and Resurface | 1,908,559.00 | $367,540.62 |
| 45 | Joint Seal | 191,375.00 | $32,763.10 |
| 48 | Joint Seal | 191,375.00 | $29,126.27 |
| Total PCCP PW Cost $2,098,552.92 | |||
PW = F [1/(1+i)n]
Where: F = Future Construction Cost
i = Discount rate (4%)
n = Number of years from year zero
| Age in Years | Rehab. | Cost $ | Present Worth Cost $ |
|---|---|---|---|
| 3 | Joint Seal | 191,375.00 | $170,131.68 |
| 6 | Joint Seal | 191,375.00 | $151,246.44 |
| 9 | Joint Seal | 191,375.00 | $134,457.54 |
| 10 | Profile Mill and Functional Overlay | 3,659,857.00 | $2,472,468.25 |
| 13 | Joint Seal | 191,375.00 | $114,934.87 |
| 16 | Joint Seal | 191,375.00 | $102,176.68 |
| 19 | Joint Seal | 191,375.00 | $90,834.69 |
| 22 | Joint Seal | 191,375.00 | $80,751.71 |
| 25 | Mill and Resurface | 1,864,953.00 | $699,575.21 |
| 28 | Joint Seal | 191,375.00 | $63,819.25 |
| 31 | Joint Seal | 191,375.00 | $56,735.08 |
| 34 | Joint Seal | 191,375.00 | $50,437.28 |
| 37 | Joint Seal | 191,375.00 | $44,838.56 |
| 40 | Mill and Resurface | 1,864,953.00 | $388,449.28 |
| 43 | Joint Seal | 191,375.00 | $35,436.56 |
| 46 | Joint Seal | 191,375.00 | $31,502.98 |
| 49 | Joint Seal | 191,375.00 | $28,006.03 |
| 50 | Salvage Value | -621,651.00 | -$87,474.14 |
| Total HMA PW Cost $4,628,327.95 | |||
PW = F [1/(1+i)n]
Where: F = Future Construction Cost
i = Discount rate (4%)
n = Number of years from year zero
| Total Cost | Alternative 1: 11 inches PCCP | Alternative 2: 13 inches HMA | ||
|---|---|---|---|---|
| Agency Cost ($1000) | User Cost ($1000) | Agency Cost ($1000) | User Cost ($1000) | |
| Undiscounted Sum | $7,387.04 | $0.00 | $8,471.29 | $0.00 |
| Present Value | $2,098.55 | $0.00 | $3,449.37 | $0.00 |
| EUAC | $97.69 | $0.00 | $160.57 | $0.00 |
| Lowest Present Value Agency Cost | Alternative 1: 11 inches PCCP | |||
| Lowest Present Value User Cost | Alternative 1: 11 inches PCCP | |||
| Year | Alternative 1: 11 inches PCCP | Alternative 2: 13 inches HMA | ||
|---|---|---|---|---|
| Agency Cost ($1000) | User Cost ($1000) | Agency Cost ($1000) | User Cost ($1000) | |
| 0 | ||||
| 1 | ||||
| 2 | ||||
| 3 | $191.38 | |||
| 4 | ||||
| 5 | ||||
| 6 | $191.38 | |||
| 7 | ||||
| 8 | $184.29 | |||
| 9 | $191.38 | |||
| 10 | ||||
| 11 | ||||
| 12 | $191.38 | |||
| 13 | ||||
| 14 | ||||
| 15 | $191.38 | |||
| 16 | $184.29 | |||
| 17 | ||||
| 18 | $191.38 | |||
| 19 | ||||
| 20 | $3,927.08 | |||
| 21 | ||||
| 22 | ||||
| 23 | $191.38 | |||
| 24 | $184.29 | |||
| 25 | ||||
| 26 | $191.38 | |||
| 27 | ||||
| 28 | ||||
| 29 | $191.38 | |||
| 30 | $3,968.74 | |||
| 31 | ||||
| 32 | $191.38 | |||
| 33 | $191.38 | |||
| 34 | ||||
| 35 | $1,864.95 | |||
| 36 | $191.38 | |||
| 37 | ||||
| 38 | $191.38 | |||
| 39 | $191.38 | |||
| 40 | ||||
| 41 | $191.38 | |||
| 42 | $1,908.56 | |||
| 43 | ||||
| 44 | $191.38 | |||
| 45 | $191.38 | |||
| 46 | ||||
| 47 | $191.38 | |||
| 48 | $191.38 | |||
| 49 | ||||
| 50 | ||||
| Total Cost | Alternative 1: | Alternative 2: 10 inches HMA | ||
|---|---|---|---|---|
| Agency Cost ($1000) | User Cost ($1000) | Agency Cost ($1000) | User Cost ($1000) | |
| Undiscounted Sum | $0.00 | $0.00 | $9,447.36 | $0.00 |
| Present Value | $0.00 | $0.00 | $4,628.33 | $0.00 |
| EUAC | $0.00 | $0.00 | $215.45 | $0.00 |
| Lowest Present Value Agency Cost | Alternative 1: | |||
| Lowest Present Value User Cost | Alternative 1: | |||
| Year | Alternative 1: | Alternative 2: 10 inches HMA | ||
|---|---|---|---|---|
| Agency Cost ($1000) | User Cost ($1000) | Agency Cost ($1000) | User Cost ($1000) | |
| 0 | ||||
| 1 | ||||
| 2 | ||||
| 3 | $191.38 | |||
| 4 | ||||
| 5 | ||||
| 6 | $191.38 | |||
| 7 | ||||
| 8 | ||||
| 9 | $191.38 | |||
| 10 | $3,659.86 | |||
| 11 | ||||
| 12 | ||||
| 13 | $191.38 | |||
| 14 | ||||
| 15 | ||||
| 16 | $191.38 | |||
| 17 | ||||
| 18 | ||||
| 19 | $191.38 | |||
| 20 | ||||
| 21 | ||||
| 22 | $191.38 | |||
| 23 | ||||
| 24 | ||||
| 25 | $1,864.95 | |||
| 26 | ||||
| 27 | ||||
| 28 | $191.38 | |||
| 29 | ||||
| 30 | ||||
| 31 | $191.38 | |||
| 32 | ||||
| 33 | ||||
| 34 | $191.38 | |||
| 35 | ||||
| 36 | ||||
| 37 | $191.38 | |||
| 38 | ||||
| 39 | ||||
| 40 | $1,864.95 | |||
| 41 | ||||
| 42 | ||||
| 43 | $191.38 | |||
| 44 | ||||
| 45 | ||||
| 46 | $191.38 | |||
| 47 | ||||
| 48 | ||||
| 49 | $191.38 | |||
| 50 | ($621.65) | |||