ACCELERATED CONSTRUCTION STRATEGIES. Selection and Impact

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1 ACCELERATED CONSTRUCTION STRATEGIES Selection and Impact

2 Accelerated Construction Strategies Why Use Accelerated Construction Strategies? Reduce construction time Promote innovative construction strategies Minimize impact to traffic Minimize impact to businesses, schools, hospitals or public facilities 2

3 Lane closures on all roads with 5,000 ADT/Lane or higher Added capacity without lane closures on high volume roads (12,500 ADT/Lane) Road-user cost (RUC) equals or exceeds the contract administrative liquidated damages (CALD) Impact access to businesses, schools, hospitals or public facilities Bridge or road closures 3

4 Accelerated Construction Strategies Design Considerations Prior to Letting Complete and accurate PS&E ROW and utilities clear All environmental issues are considered in PS&E Realistic schedule Third party funding obtained Constructability review Consult with the District Engineer and District TP&D Director 4

5 Accelerated Construction Strategies Types of Accelerated Construction Strategies Incentive using Contract Administrative Liquidated Damages (CALD) Milestones Substantial Completion Lane Rental A+B Provisions 5

6 Accelerated Construction Strategies Incentive Using Contract Administrative Liquidated Damages Pay for early completion at the standard CALD rate 6

7 Accelerated Construction Strategies Milestones Incentives/disincentives or increased disincentives only based on road user cost (RUC) Identify specific project phases with significant impact on traffic and businesses Lane closure Ramp closure Major detour 7

8 Accelerated Construction Strategies Substantial Completion Incentives/disincentives or increased disincentives only based on road user cost (RUC) Use for early substantial completion Define substantial completion in the plans 8

9 Accelerated Construction Strategies Lane Rental Use for pavement maintenance work Use for managing intermittent lane closures to minimize impact to traffic Specify hours for allowance of lane closures Disincentive based on RUC 9

10 Accelerated Construction Strategies A+B Provisions Consider for large and or highly critical projects where early completion should be a consideration for award Bid Items + (Number of days bid x RUC or CALD) A B1 + B2 + BX +BT Include incentives/disincentives for milestones or final substantial completion based on RUC May use increased disincentives alone, without incentives 10

11 Accelerated Construction Strategies Selecting Risk Accelerated Construction Strategies High risk Major delays Right-of-way not clear Utilities not clear Environmental constraints No environmental constraints Utilities clear Right-of-way clear Low risk Less aggressive strategies Lane Rental Milestones with Increased Disincentives only Substantial Completion with Increased Disincentives only Incentive using CALD Milestones with I/Ds Substantial Completion with I/Ds A+B Provisions with I/Ds or Increased Disincentives only More aggressive strategies 11

12 Applications in San Antonio District Freeway Preventive Maintenance Fredericksburg Road (LP 345) at Medical Drive IH 10 from Huebner to LP 1604 IH 10 from S. Pine Street To Roland Avenue Wurzbach Parkway 12

13 Freeway Preventive Maintenance Lane rentals High volume freeways Use table with lane closure restrictions and lane rental charges Special Provision to Item 8 13

14 Freeway Limits Direction Lane Closure Hours Lane Closure Charge 14

15 The Contractor will be assessed a lane rental charge for each lane or lanes closed or for each lane or lanes obstructed from the time of notice to proceed until completion of all work. The rental charge will be assessed for each lane or lanes closed or obstructed for each direction of traffic as shown in a lane rental table that is provided elsewhere in the contract. 15

16 Freeway Preventive Maintenance IH 410, from IH 10 to Blanco Ultra thin bonded wearing course ADT = 233,000 (2011) $13,200 assessed in lane rental charges Fees assessed after 5:30 AM IH 10, from Dominion Drive to LP 1604 Mill and overlay ADT=74,000 $0 assessed in lane rental charges Charges assessed after 6:00 AM 16

17 Fredericksburg Road (LP 345) at Medical Drive 17

18 Fredericksburg Road (LP 345) at Medical Drive Milestone 1 Close Fredericksburg Rd. to construct new bridge RUC = $15,000 per day Maximum number working days for incentive = 5 days Maximum incentive credit = $75,000 Engineer Precast abutment caps, slab beams and concrete deck Contractor Slide-in bridge construction Working days = 14 Working days = 5 18

19 IH 10 from Huebner Road to Loop

20 IH 10 from Huebner Road to Loop 1604 Milestones Four milestones Total maximum incentive credit for milestones = $824,000 Substantial Completion Allowable number of working days = 673 days RUC liquidated damages = $19,600 per day Maximum number of working days for incentive = 60 days Maximum incentive credit = $1,176,000 20

21 IH 10 from Huebner Road to Loop 1604 Milestone 1 Completed Relocation/Reconstruction of WB Ramp 9 Allowable number of working days = 48 days RUC liquidated damages = $5,000 per day Maximum number of working days for incentive = 5 days Maximum incentive credit = $25,000 Actual number of working days = 61 (13 days late) Disincentive = $65,000 21

22 IH 10 from Huebner Road to Loop 1604 Milestone 2 Completed Reconstruction of existing EB Fredericksburg Road bridge deck Allowable number of working days = 70 days RUC liquidated damages = $20,000 per day Maximum number of working days = 15 days Maximum incentive credit = $300,000 Actual number of working days = 67 (3 days early) Incentive = $60,000 22

23 IH 10 from S. Pine Street to Roland Avenue 23

24 IH 10 from S. Pine Street To Roland Avenue Every type of Accelerated Construction Strategy was used on this project 24

25 IH 10 from S. Pine Street to Roland Avenue Milestones with Incentives/Disincentives Three milestones Total maximum incentive credit for milestones = $1,130,880 Substantial Completion Incentive/Disincentive Traffic in final configuration Allowable number of working days = 336 days RUC liquidated damages = $16,757 per day Maximum number of working days for incentive = 20 days Maximum incentive credit = $335,140 25

26 IH 10 from S. Pine Street to Roland Avenue Lane Rental Provision Standard San Antonio District Lane Rental Assessment Table A+B Bidding Original Schedule = 336 Days for Substantial Completion Engineer s Estimate = $11,789, BIDDER NO. A B A+B PERCENTAGE 1 $12,027, $17,188, % 2 $12,311, $17,941, % 3 $14,063, $18,453, % 4 $17,528, $21,918, % 26

27 IH 10 from S. Pine Street to Roland Avenue Pavement Failure Revised sequence of work Maintained milestones 27

28 Wurzbach Parkway at US 281 Milestones with Incentives/Disincentives 2 milestones Total maximum incentive credit for milestones = $81,680 28

29 Wurzbach Parkway at US 281 Milestone 1 Closure of Nakoma Entrance Ramp to US 281 to Construct 1200 LF of Cast-in-Place multiple box culvert Allowable number of working days = 55 days RUC liquidated damages = $6,160 per day Maximum number of working days for incentive = 11 days Maximum incentive credit = $67,760 29

30 Wurzbach Parkway at US 281 Milestone 1 Canceled Determined schedule was unrealistic Schedule was for pre-cast multiple box culvert Curing not included in the schedule Forming time not included in the schedule Shoring time not included in the schedule Solution involved contractor constructing a temporary ramp Cost of Temporary Ramp = $18,586 30

31 Accelerated Construction Strategies: References Accelerated Construction Strategies Guideline (TxDOT, September 2003) TTI Techniques Report (TTI, December 1999) A Short Course on Techniques for Determining Construction Related Road User Costs (TTI, March 1999) 31