WVDOH Accelerated Construction Concepts Benjamin Beerman, PE

I-64 over 16 th Street

Construction Sequence - Existing Median

Non-Accelerated

AcceleratedNon-

Accelerated

Non-

Non-Accelerated

Accelerated Concepts Drilled Shaft Construction w/ no impacts to traffic PreCast/PT Saddle Caps PreCast Abutment Option PreCast PT Deck Panels Option Incentive/Disincentive Clause (I/D) – no Option

Drilled Shafts Drilled shafts –7-ft diameter up to 70-ft deep –Polymer Slurry in lieu of casing method –Started in mid 12/2007, Ended in April/May (All 20 Pier Shafts) Before During

PreCast PT Straddle Caps

PreCast PT Saddle Caps

PreCast PT Straddle Caps Column to Cap Connection –4 of the 5 Contractor’s bid Disc –Avg Disc Bid $3k/each (20 total) –Pot Bearing Bid $4k/each

PreCast PT Pier Caps

Abutments PreCast or a CIP Abutment Alternatives

I-64 over 16 th Street

PreCast PT Deck Panel

Incentive/Disincentive Clause FHWA technical advisory T –USER COSTS and PREMIUM WAGE RATES –14 weeks allowed for Accelerated Phase –The FHWA Technical advisory, 5 percent of the total contract amount is recommended as the maximum incentive amount. –$21.8M Total Project costs CIP Option (16 to 24 weeks) –$23M Total Project costs for PreCast Option (12 to 16 weeks) –$10.5M Accelerated Phase, $550k maximum incentive –$500 to 800k for premium wage labor costs –$8,500 minimum disincentive daily amount to prevent bids from including disincentive payouts in order to obtain Low Bid –Choose one time incentive payment of $300k with $10k/day penalty.

Incentive/Disincentive Clause Weekly Multiplier Accelerated Construction Cost5 d/wk6 /wk7 d/wk 8 hr/d hr/d hr/d No. Weeks to complete Work w/ weather Cost5 d/wk6 /wk7 d/wk 8 hr/d hr/d hr/d Premium Labor Costs Cost5 d/wk6 /wk7 d/wk 8 hr/d$3,540,012$3,835,013$4,045, hr/d$3,894,013$3,953,013$4,197, hr/d$4,130,014$4,228,347$4,298,586 I/D credits/payments Cost5 d/wk6 /wk7 d/wk 8 hr/d-$542,276-$239,680-$23, hr/d-$179,161-$62,916$235, hr/d$62,916$264,647$408,740 Premium Labor Costs adjusted w/ I/D credits/payments Cost5 d/wk6 /wk7 d/wk 8 hr/d$4,082,288$4,074,693$4,069, hr/d$4,073,174$4,015,929$3,961, hr/d$4,067,098$3,963,701$3,889,846 Contractor's Bid Options Cost5 d/wk6 /wk7 d/wk 8 hr/d$21,782,347$21,774,752$21,769, hr/d$21,773,233$21,715,988$21,661, hr/d$21,767,157$21,663,760$21,589,905

Construction Pics Show Framing Plan over the piers

Construction Pics Show Framing Plan over the piers

Construction Pics

Final Pics

Opportunities for more? + 1 super (not “bridge”) in 2 to 3 week timeframe, or 2 supers in 8 to 12 weeks ++ S/D ratio: MDB (Composite DL, Continuous LL) ++ Specified additional pic points in cap (PT) ++ Looked at FLDOT’s prefab pier caps + Perhaps reduce the I in the I/D + No contingency detour (contractor opt. ramps) + Pro/Con inside alignment (bridge funds prevent)

Robin Hood Road Bridge

Preserve the Existing Alignment Relatively Low ADT, 200 VPD (2008) Detour Route Accommodating –Traveling Public –Emergency Vehicles –School Bus Traffic –Farming Activities Benefits –Temporary Bridge Not Required –Minimize the TCE/ROW take –Contactor Gains Full Access to Site –Increased safety for Public & Contractor w/ no Traffic

Robin Hood Road Bridge Existing Bridge: –2 Single lane 102ft each = 204ft –Timber Deck New Bridge: –3 Span (82/96/82) 260 ft 2 Lane Bridge (U.S.C.G Navigation Opening Improvements)

Accelerated Concepts Drilled Shaft Construction Straddle Caps PreCast/PS Box Beam PreCast Integral Abutments on Piling Option Span to Span Erection –Simple for DL, Continuous for LL Deck Pour Single Placement Option –Initial Set Requirement Incentive/Disincentive Clause (I/D)

P/S Saddle Cap

PreCast Integral Abutments

Span to Span Erection

Single Pour Deck 230 cy cubic yards of concrete required Appr. slab, Pier and Abt. Diaph. poured w/ deck Initial set language per AASHTO T197 –Initial Set F’c < 500 psi –Penetrometer Placement Time –Delivery + Placement + Finishing Time –Multiply by 1.3 to 1.5

I/D Clause 126 Days (w/ weather) conventional Needed 70 Days per public meeting One Time Lump Sum Incentive $50,000 $2,000 per day Disincentive $1.76M total ($800k phased) FHWA Maximum I = $40k Premium Wage Rate = $52k D = $1,200/day to prevent low bid

Complete

Opportunities for More? Long weekend closure Corrugated pile pocket detail, or Split the abutment walls in half, or Drilled Shafts/Straddle Abutment MDB (Composite for DL, Cont. for LL) with ¼” over poured deck, shot blast/grind final profile

Honey Creek -Outside Substructure Construction -Span to Span Erection -PreCast Panel/CIP Deck -PreCast/CIP Pier Cap -Disincentive Clause -85 days -$4k per day -No Incentive

Honey Creek

Summary Increase Safety – Traveling Public & Contractor Reduce Duration of Traffic Disruptions Long Term Eliminate the use of Temporary Bridge Engineering, Permitting, Review/Approval, Install/Remove Minimize TCE/ROW Takes Minimize Utility and Environmental Impacts No Sacrifice to Quality Public Support & Partner Agency Collaboration EMS (Fire, Police, Ambulance), Schools, Mail, Businesses Committed Team Effort btw. Construction, Materials, and Engineering

Questions Thank You! Benjamin Beerman, P.E