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HomeMy WebLinkAbout20071773 Ver 1_Email_20080822Re B-3705 on SR 2045 (Burlington Mills Road) south of Wake Forest ` 7 7 7_5 Subject: Re B-3705 on SR 2045 (Burlington Mills Road) south of- ake Forest From: Rob Ridings <rob ndmgs@ncmail net> Date: Fri, 22 Aug 2008 09 41 24 -0400 To: "Montague, Heather W" <hwmontague@ncdot gov> CC: "enc c alsmeyer@saw02 usace army mil" <enc c alsmeyer@saw02 usace army mil>, "Murray, Christopher A" <cmurray@ncdot gov> Heather, As long as the additional riprap is completely within the permitted footprint for both 401 and Buffer approval then I certainly have no issues with it Sounds good to me -Rob Montague, Heather W wrote AID 200120076 (02/22/08) DWQ Project No 20071773 (10/24/07) Eric and Rob- Clearing activities are currently underway for B-3705 The project proposes 36" drilled piers with 42" permanent caissons In preparation for construction of the new bridge, the locations of the drilled piers were staked for observation purposes It is apparent that these piers with caissons will be very near both edges of the East and West stream banks We are therefore concerned about long term stability of the stream banks and anticipate rip rap armoring may be necessary at these locations (see attached drawing) In preparation for the potential need for additional rip rap we are requesting your approval We do not anticipate additional stream impacts at these locations The rip rap would be only on the stream banks (not in the stream channel) and completely within the previously permitted footprint Therefore we are not requesting a permit modification, but would like your responses on this before we move forward -Heather Montague (919)492-0111 office (919)691-1596 cell 1 of 1 8/22/2008 9 42 AM 26 PAN "A" %SS II , RAP P.) EL. 192.0# N EL. 191.0 ?EL 19101 f TOP, OF DRILLED PIER EL 188 88EL.1B7.Ot BENT 1 SECTION ALONG -L- (SECTIONS AT END BENTS & BENTS ARE AT RIGHT ANGLES) 170'-O' (FILL FACE TO FILL FACET 50'-0' <<F?sTS9 BENT I CONTROL LINE l co), W.P. •2 STA. 26+15 00 -L- i, 0 00; t BRIDGE STA. 26+50 00 -L- SPAN " " m n ne• n 27+25 27-1 FILL FACE 0 SPAN "C" STA. 27+35.OC G.P. EL. 206.1( BEG ST G.PA P 1%2r 1 SLOPE NORMAL TO CAP FL,xLL FIX (TYP.)-\ W.S. EL. 188 45 F I I-zf 6/15/04) EL. 192.0 EL.188.Ot-^ - - ~! EL. 291.0± TOP OF DRILLED PIER EL. 190.030 4 h h? h WP.•3 STA. 26+ Y-00" /• TO SR 20\ o , EXISTING ' SUBSTRUCTURE r, r, TEMPORAR SHORING (SEE NOTE f PLAN a? (PILES AND DRILLED PIERS NOT SHOWN FOR CLARITY) e BENT 2 `HP 12 x 53 STEEL PILES (TYP.) END BENT 2 BENT 2 ?-\Am! .S&CD-0IA.