Oatman Highway at Sacramento Wash Crossing Federal Aid No. 000-MMO-0(216)T ADOT Project No MO MMO T C

Transcription

1 87-Hour Bridge Construction in Arizona ABC and ARC at the Speed of Commerce Mohave County (Topock), Arizona Oatman Highway at Sacramento Wash Crossing Federal Aid No. 000-MMO-0(216)T ADOT Project No MO MMO T C 1

2 Introductions & Project Overview -Annette Riley, P.E. (ADOT) Project Background & Design -Kevin Kimm, P.E. (Kimley-Horn) Construction Webinar Agenda -Reece Green (Pulice Construction) Questions & Answers 2

3 Project Location Project Location 3

4 Project Overview Mohave County project Closed up to eight (8) times per year (multiple days) during monsoons Utilized AID Funding Combination of ABC and Accelerated Road Construction (ARC) 4

5 Project Overview Partnering Successes FHWA Ben Beerman FHWA Kimberly Utely, Marrisa Romero, Jennifer Brown Mohave County Tim Walsh, Steven Latoski ADOT Project Showcase Event 5

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7 PROJECT BACKGROUND 7

8 Problem Statement Recurring Oatman Hwy. flooding and sedimentation 8

9 4-6 9

10 Road Closures ( ) Year Closure Date Closure Duration (hours) Emergency Repair Activity 2013 August 24 th 16 Sediment Removal 2013 August 25 th 16 Sediment Removal 2013 August 29 th 160 Sediment Removal 2013 September 10 th 79 Sediment Removal 2014 July 7 th 26 Sediment Removal 2014 July 8 th 40 Sediment Removal 2014 August 4 th 55 Sediment Removal 2014 August 12 th 47 Sediment removal and placement of cold mix level course overlay through low-water crossing by Mohave County forces 2014 August 19 th 82 Sediment Removal 2014 September 8 th (TS Norbert) 57 Sediment Removal 2014 September 16 th 18 Sediment Removal 2014 September 27 th 52 Sediment Removal 648 hours 10

11 County Design Concept Report (DCR) Construct all-weather crossing based on 2-year storm 2-yr Storm addresses between 85%-95% of events Remove man-made berm Relocate crossing to the south Allow flows through trees to clean out sediment and back to historic path 11

12 Drainage Area: 1,331 Sq. Miles 12

13 Project Funding Accelerated Innovation Deployment (AID) Grant NACE/AACE Presentation on GRS-IBS Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) Project Scope Change GRS-IBS to Prefabricated Bridge Elements PBE Reapplication for Federal Grant Reduced road user cost (vehicle operation and personal time) attributed to 24-mile detour from $2.6 million to $135K (95% reduction) through application of PBE and ABC 13

14 PROJECT DESIGN 14

15 Combination of ABC and ARC Significant roadway profile change required 10-ft Profile Increase New Bridge Roadway construction was critical path 8700 CY Embankment 1000 Tons Asphalt Pavement Before - North Before - South 15

16 Combination of ABC and ARC Before After 16

17 Bridge Construction Single Span 110 Clear 6-ft Clearance Overtops in 100-year storm 17

18 Traditional Construction Drilled Shafts Retaining Walls Prefabricated Bridge Elements (PBE) Abutments Cap Backwall Deck Units Approach Slabs 18

19 Abutments Clear Span Roadways Center blockout to reduce weight 12,000 lbs savings 19

20 Abutments Drilled shaft to cap connection Superstructure to cap connection 20

21 Abutment Backfill Reinforced Backfill minimize lateral earth pressure on walls 21

22 Deck Units Precast vs. Steel Girders 22

23 Closure Pours 3.0 ksi 6 hours 4.5 ksi 7 days Impact on schedule Durability requirements 23

24 Approach Slabs Precast vs. Cast-inplace 24

25 Bridge Construction Pre-closure work 25

26 Bridge Construction 96 hr closure 26

27 Mandatory Pre-Bid Meeting Participation: Nine Contractors Explain Purpose of the Accelerated Innovative Deployment(AID) Project Share information of the PBE Technology Share Important Provisions of the Contract Understand Interest for the Project Response to Contractor Questions 27

28 Project Cost Estimate First ABC Project in Arizona using PBE No Historical Unit Costs Utilized FHWA resources compared estimates with other similar projects 28

29 Incentives/Disincentives SCHEDULE OF INCENTIVES / DISINCENTIVES From More Than Completion Timeframe Up to Incentive Payment Disincentive (Deduction of Monies Due) 0 hours 94 hours $ 95,000 None 94 hours, 1 min 96 hours $ 90,000 None 96 hours, 1 min 100 hours None None 100 hours, 1 min 104 hours None $ 3, hours, 1 min 108 hours None $ 3,300 Every 4-hour period up to 192 hours None $ 3,300 x No. of 4-hr periods 192 hours, 1 min None None 29

30 CONSTRUCTION 30

31 Contractors Perspective Targeting Projectsà Opportunities to stretch and grow Estimating Historical Production Procurement Subcontractors Planning Location Location - Location 31

32 96-Hour Construction Schedule Bridge Construction Day 1 Day 2 Day 3 Day 4 32

33 Construction Pre-closure Prefabricated elements in Phoenix March

34 Bridge Haul Pick em up and set em down 34

35 Construction 96 Hour Closure Pre-closure staging 12 Hours 12 Hours 24 Hours 35

36 Construction 96 Hour Closure 24 Hours 28 Hours 38 Hours 36

37 Construction 96 Hour Closure (Roadway) 8 Hours 7 Hours 54 Hours 37

38 Challenges Remote project location Material procurement Access Planning for contingencies 38

39 Lessons Learned Don t assume, clarify all potential issues Reaffirmation of the importance Collaboration and Cooperation by all Stakeholders 39

40 Tim Walsh Mohave County Engineering Manager Steve Boschen ADOT Division Director - Infrastructure Delivery & Operations (IDO) Division 40

41 Mohave County Perspectives Ideal application for this remote location 100 ROW surrounded by USFWS Refuge land Improved quality cost of project More controlled environment with more resources Minimized Traffic Impacts 4 days vs. 11 weeks 24 mile detour Improved Safety Built in controlled environment Decreased roadway construction time 41

42 ADOT Oak Creek Bridge Constructed in ft Single Span Concrete Bridge ABC Lateral Slide Weekend Closure Future of ADOT ABC Program 42

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44 QUESTIONS AND ANSWERS 44