20181249 Ver 11_990-087 SmithRowe C204197 Bridge 87 DEMOPLAN Rev 3_20230210

TELEPHONE: [phone] SMITH-ROWE, LLC FAX: [phone]
639 OLD HIGHWAY 52 SOUTH
Mount Airy,NC 27030
DEMOLITION PLAN FOR STRUCTURE 087
Project: C204197 (Wake County, NC)
Location: Bridge 87(Loop B Bridge on US-70 over 1-40 EB/WB)
This plan is based on available plan information and site visits at the existing structure. Modifications of the
plan may be needed during the demolition operation to ensure the safety of the demolition personnel, the
traveling public and to complete the demolition project in a timely manner.
*Attached Sheet shows locations of spans relative to 1-40 and jurisdictional stream/wetland.
Step 1/Shifts 1 (Night): Beginning at end bent 1 and working west the existing deck of span A over the
slope and westbound 1-40 will be demolished with excavators and hydraulic hammers (see notes 1 and 2).
Traffic Control Required: Detour of 1-40WB
Step 2/Shift 2 (Night): Beginning at the break line, demolition of span A deck will continue with excavators
and hydraulic hammers.
Traffic Control Required: Detour of 1-40WB
Step 3/Shift 3 (Night): Beginning at the break line, demolition of span A deck will continue with excavators
and hydraulic hammers.
Traffic Control Required: Detour of 1-40WB
Step 4/Shift 4(Night): Beginning at the break line, demolition of span B deck will begin.
Traffic Control Required: Detour of 1-40EB
Step 5/Shift 5(Night): Beginning at the break line, demolition of span B deck will continue.
Traffic Control Required: Detour of 1-40EB
Step 6/Shift 6(Night): Beginning at the break line, demolition of span C deck will be performed.
Traffic Control Required: Outside lane closure(s)of 1-40EB
Step 7/Shift 7 (Night or Day): Beginning at the break line, demolition of span C deck will continue.
Traffic Control Required: None—working away from traffic
Step 8/Shift 8 (Night or Day): Beginning at the break line, demolition of span C deck will be completed.
Traffic Control Required: None—working away from traffic.
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C204197(Wake County) Bridge 87 Demolition Plan
Step 9/Shift 9 (Night or Day): (protection of wetland under Span D and demolition of Span D)
The demolition process will consist of using a hydraulic hammer attached to an excavator to remove the
deck from the bridge while the machine is located on the bridge deck. Rubbalized concrete will fall from the
deck to the ground below. To protect the impacted areas,first any trees in the area under the bridge will be
cleared but not grubbed. Non-Traditional BMP measures will be installed to protect the highly sensitive
areas associated with the Swift Creek Watershed. Protection will be installed such that no demolition
material enters the stream/buffers. First a layer of geotextile fabric will in placed at the width of the bridge
plus 10'outside of drip edge and between the buffer limits;with the fabric spanning the stream bank to bank
and not impacting stream flow in any way. Then crane mats will be installed over the entire area of the
previously installed fabric. At stream crossing itself, mats will be installed perpendicular to flow spanning
from bank to bank. Finally straw bales will be placed on the mats to inhibit material from rolling off the mats
once debris has fallen onto the mats.
Beginning at the break line, demolition of span D will begin.
Traffic Control Required: None—working away from traffic.
Step 10/Shift 10 (Night or Day): Beginning at the break line, demolition of span D will be completed.
Traffic Control Required: None—working away from traffic.
Step 111Shift 11 (Night): Girders of span A will be removed with cranes.
Traffic Control Required: Detour of 1-40WB, inside lane closures of 1-40EB
Step 121Shift 12 (Night): Remaining girders of span A will be removed with crane(s).
Traffic Control Required: Detour of I-40WB, inside lane closures of 1-40EB
Step 131Shift 13 (Night): Girders of span B will be removed with cranes.
Traffic Control Required: Detour of 1-40EB, inside lane closure of 1-40WB.
Step 141Shift 14(Night): Remaining girders of span B will be removed with crane.
Traffic Control Required: Detour of 1-40EB, inside lane closure of 1-40WB
Step 151Shift 15(Night): Interior bent 1, end bent 1 and slope protection will be demolished with
excavators and hydraulic hammers.
Traffic Control Required: Detour of I-40WB, inside lane closure of 1-40EB
Step 161Shift 16(Night): Interior bent 1, end bent 1 and slope protection demolition will be completed.
Traffic Control Required: Detour of I-40WB, inside lane closure of 1-40EB
Step 171Shift 17 (Day): Beams of span C will be removed with cranes
Traffic Control Required: None—working away from traffic
Step 181Shift 18 (Day): Beams of span C will be removed with cranes
Traffic Control Required: None—working away from traffic
Step 191Shift 19 (Day): Beams of span D will be removed with cranes
Traffic Control Required: None—working away from traffic
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C204197(Wake County) Bridge 87 Demolition Plan
Step 201Shift 20 (Day): Interior bents 2 and 3 will be demolished with excavators and hydraulic hammers.
Traffic Control Required: None—working away from traffic
Step 211Shift 21 (Day): Interior bents 2 and 3 will be demolished with excavators and hydraulic hammers.
Traffic Control Required: None—working away from traffic
Steps 22-301Shifts 22-30(Day): End bent 2 and slope protection will be demolished with excavators and
hydraulic hammers. Debris will be processed (rebar removed)and transported off-site for recycling.
Beam removal summary (spans A and B): During the removal of the existing beams two cranes will be
utilized to remove the beams. Beam 4 will be rigged to two cranes and the diaphragms cut. The beam will
be cut over the cap leaving the bolts attached to the cap. The beam will be lifted and removed. Cranes will
be rigged to beam 3 and diaphragms will be cut, and the beam will be separated over the cap leaving the
bolts and the remaining beam. On night two, beam 2 will be rigged and two additional cranes will be rigged
to beam 1 to maintain stability. Diaphragms between beam 1 and 2 will be cut and the beams will be cut
above the cap leaving the bolts intact, both beams will be removed. During beam removal on spans C and D
two cranes will be utilized and the cutting pattern will be repeated.To expedite the project, excavators may
be utilized to remove the beams on spans C and D away from traffic.
Concrete debris will be removed to one or more of these locations for recycling:
1. Wise Recycling at 440 S. Tech Park Lane, Clayton, NC
2. ST Wooten Concrete Plant at Uzzle Industrial Drive, Clayton, NC
3. Godwin Recycling at 1409 S. Clinton Ave., Dunn, NC
Rebar and steel debris will be removed to:
1. Wise Recycling at 440 S.Tech Park Lane, Clayton NC
Note 1: Prior to demolition over an active roadway, roadway protection (screenings/sand)will be installed.
Note 2: Prior to demolition of the deck a saw cut line will be made to provide a clean break/stopping line for
each night of demolition.
Note 3: The plan/sequence is our guide, multiple steps may be performed concurrently provided the steps
can be performed safely for all workers and the traveling public.
Note 4: Bent stems/piles will be demolished two feet below finished grade or as needed for new
construction.
Note 5: In the event of inclement weather, NCDOT and/or the contractor shall make a determination of
installing traffic control.
Note 6: Starting location/direction of demolition may be reversed to accommodate the contractors needs to
continue work on the project.
Note 7: The traffic control requirements supplied are a guide. Smith-Rowe and the contractor will
coordinate the exact needs of traffic control to ensure the safety of the traveling public and all workers.
Note 8: The sequence of Steps/Shifts does not imply continuous work. Our schedule will consist of a 5-day
week with an option for a 6t"day if required to recover lost time due to weather or other issues.
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C204197(Wake County) Bridge 87 Demolition Plan
Note 9: Prior to demolition of the deck, girder locations will be identified and marked so operators are aware
of the top flange locations. Supervisor(s)will monitor the operation to ensure minimal or no damage occurs
to the beams.
Note 10:After each shift,girders will be inspected and cleaned by hand and with blowers to remove any
loose debris prior to opening the roadway to traffic.
Note 11:Concrete slurry from the sawing operations shall be collected and disposed of at one of the area
S.T. Wooten Concrete Plants for recycling.
Note 12: Prior to demolition over any jurisdictional feature, all applicable requirements of the permit will be
adhered to in order to protect these jurisdictional features.
Note 13:At anytime during the demolition process, if debris enters the jurisdictional stream/wetland a proper
recovery method will be discussed/reviewed prior to retrieval.
Submitted by Jonathan Randall, Smith-Rowe, LLC
Revised 11/9/22 to add Note 12
Revised 2/6/23 to add protective measures to step 9, add map of Deck Spans, and add Note 13
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