The URL can be used to link to this page

Home My WebLink About19970674 Ver 1_Complete File_19970805 (2) STATE OF NORTH CAROLINA DEC 2 9W8 DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. P.O. BOX 25201, RALEIGH, N.C. 27611-5201 E. NORRIS TOLSON GOVERNOR SECRETARY December 22, 1998 US Army Corps of Engineers Raleigh Field Office 6508 halls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 ATTENTION: Mr. Eric Alsmeyer NCDOT Coordinator Dear Sir: C-4/ Subject: Alleghany County, Replacement of Bridge No. 52 over Little River on SR 1172 and Bridge No. 56 over Pine Swamp Creek on SR 1278, Federal Project No. BRZ-1172(4), State Project No. 8.2700201, T.I.P. No. B-2803, Action ID 199708087 and 199708182. On July 31, 1997 we submitted a request for verification of Nationwide Permits 23 and 6 for replacement of the structures and for geotechnical work. The NW 23 verification was received on August 20, 1997. As described in our original submittal bridge No. 52 will be replaced at its existing location with a bridge 34 meters (110 feet) long and 6.0 meters (20 feet) wide and during construction traffic will be detoured on existing secondary roads. We had originally designed bridge No. 56 to be replaced with a triple barrel 3.0 meter x 2.4 meters (10 ft x 8 ft) reinforced concrete box culvert on new alignment with traffic maintained on the existing bridge during construction. The proposed culvert was to be a bottomless culvert, which complied with Condition 2 in the Wildlife Resources Commission (WRC) letter of August 8, 1997. Bottomless culverts must be anchored in bedrock, which must be at a depth of no more than five feet. The geotechnical borings revealed that the bedrock was deeper than five feet so we are not able to use a bottomless culvert. We have changed the design and will use a double barrel culvert 12 feet by 12 feet. The cul0ft will be buried one foot below the existing streambed and will have a 6- foot wide, meandering low flow channel with baffles for fish passage. Stone from the stream bed or 2 inch gravel will be placed in the culvert. We believe that this design complies with the goal of Condition 2. A copy of the bridge design report is attached to this letter. If you have any questions or need additional information please call Ms. Alice N. Gordon at 733-7844 Ext. 307. Sincerely, ? William D. Gilmore, P.E., Manager Planning and Environmental Branch cc: w/attachment Mr. David Franklin, Corps of Engineers, Wilmington Field Office Mr. John Dorney, NCDENR, Division of Water Quality Mr. Whit Webb, P.E.. Program Development Branch Mr. R. L. Hill, P.E., Highway Design Branch Mr. A. L. Hankins, P.E., Hydraulics Unit Mr. William J. Rogers, P.E., Structure Design Unit Mr. Tom Shearin, P.E., Roadway Design Unit Mr. W. E. Hoke, P.E., Division 1 1 Engineer Ms. Gail Grimes, P.E., P & E Project Planning Engineer a p .... .._. . - - - - . - - -. - - - - 1 . ..._ ... _. I > - ?L f - Al - T - A o_ + x > ... ... ... ... . ... . - . .. _. _ .. - - -t ... . . - J l.. 1 .. .. ... ..... .. .... ... ... .. - - -- -- -- . - - •. - - 4-1- 1 - - i -r Q --t- - . .. .... .... .. .. ... .. . .... .. .. ... .. -- ?w - - : .. . .... ... ... . - _ ... .. .... ..... .... ... .... ... ... T --- --- -- - -- -- - I _ 0 f • :: t r }.... - - _ ... -- -- • -- - . . -. , .. . . ... ... - - r ----- - : : - -- -- A - --- - - -- - F --- - -- - - - - -- -- -- - - 0 .1 v I ..... ? . . - - - -- -- - -- --- - - -- ---- - -. .. . . _.... .... .. _ i - - A - _. -1 _ 1 - -- .. _ .._.. _ _ . __ .. .- F-- I _ w i _4- f i .. .. . .. .. .. ...... . . ..... C - A T, -- - -- -- - -- ---- j _ _ . . . _ _ . . . -- - --- - -- --- -- - --- - - - -? :} I. _ - . . . _ . . ._. _ .. ... ..... .... .. .. .. ... ... _ f - _ _.. ... ... .. I .1 - . j .._.._ _ - - - - 1 _ 1 . . irk l i i , k - 6 . 4 t:. . - ?.. - -- - - - - t - A .1 1 11 T H I `.. -- - - - _- I LL 1 - Q _. . - . - X ; ?Q t N I CV . . . . - - -- -- -- --- --- ? _,. r _ 1!j I- , ?pp 1 - - _ _ a , - :.. -. :. .. ; : .. • ; t - o d o ?. o Ul T O O r. t: L J' a „a SfNE s? Min STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. F.O. BOX 25201. RALEIGH, N.C. 27611-5201 E. NORRIS TOLSON GOVERNOR December 22, 1998 US Army Corps of Engineer, Raleigh Field Office 6508 Falls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 ATTENTION: Mr. Eric Alsmeyer NCDOT Coordinator Dear Sir: SECRETARY Subject: Alleghany County, Replacement of Bridge No. 52 over Little River on SR 1172 and Bridge No. 56 over Pine Swamp Creek on SR 1278, Federal Project No. BRZ-1172(4), State Project No. 8.2700201, T.I.P. No. B-2803, Action ID 199708087 and 199708182. On July 31, 1997 we submitted a request for verification of Nationwide Permits 23 and 6 for replacement of the structures and for geotechnical work. The NW 23 verification was received on August 20, 1997. As described in our original submittal bridge No. 52 will be replaced at its existing location with a bridge 34 meters (110 feet) long and 6.0 meters (20 feet) wide and during construction traffic will be detoured on existing secondary roads. We had originally designed bridge No. 56 to be replaced with a triple barrel 3.0 meter x 2.4 meters (10 ft x 8 ft) reinforced concrete box culvert on new alignment with traffic maintained on the existing bridge during construction. The proposed culvert was to be a bottomless culvert, which complied with Condition 2 in the Wildlife Resources Commission (WRC) letter of August 8, 1997. Bottomless culverts must be anchored in bedrock, which must be at a depth of no more than five feet. The geotechnical borings revealed that the bedrock was deeper than five feet so we are not able to use a bottomless culvert. We have changed the design and will use a double barrel culvert 12 feet by 12 feet. The culvert will be buried one foot below the existing streambed and will have a 6- foot wide, meandering low flow channel with baffles for fish passage. Stone from the stream bed or 2 inch gravel will be placed in the culvert. We believe that this design complies with the goal of Condition 2. A copy of the bridge design report is attached to this letter. If you have any questions or need additional information please call Ms. Alice N. Gordon at 733-7844 Ext. 307. Sincerely, v, U1, William D. Gilmore, P.E., Manager Planning and Environmental Branch cc: w/attachment Mr. David Franklin, Corps of Engineers, Wilmington Field Officc Mr. John Dorney, NCDENR, Division of Water Quality Mr. Whit Webb, P.E., Program Development Branch Mr. R. L. Hill, P.E., Highway Design Branch Mr. A. L. Hankins, P.E., Hydraulics Unit Mr. William J. Rogers, P.E.. Structure Design Unit Mr. Tom Shearin, P.E., Roadway Design Unit Mr. W. E. Hoke, P.E., Division 11 Engineer Ms. Gail Grimes, P.E., P & E Project Planning Engineer o _? - - lU V - - , { - - --- -... ^ - - - Doi - - - 4-47 ?? 1 -- -- .... . f \ UI vu .. C Q .. -l.. ?... I - A . -- .. - .. .... .... - - . - - r -- a? ,... _. .... .... - - - - N.?.1 -IA I --- --- -- --- -- -- --- T - , -- - - -- -- - - - i - -- -- - -- --- -- - -i--- 1 ... - ... - . .. - - .. ... -- -- .. - -- - - ------ -- -- -- - - --- -- ... . - .. _ 1-- . ._ . ...... .._ . - .. -- - . -- - -.. . -. - ._ ._ ... - -• - . ? -- .. - _ - - 1 . . ?.... . ._ _- - . _ .. - 44 -H .- .. .i .. . . .. . . .. ... .... . . .... .. . .. .. . . ... . .. .... .... .... .. .. . . ... _ .- :... .; ., . . ... .- - _ .. . - .,- .. - - .-- .. -_ . . . . .- - .. -. ... ? .. -. -..- _ .. . . _ . ,. ... ; .. .- - !. - - - - T 1- - - L_ } - - - - .. r 4i -W 4 - -- -- - - - I T T- . ... I i -- -- -- --- -- - - - -- ---- -- -- - --- --- -- - -- - ...... t' .- .1.. _ - - - - - . - .. .. - i.. - - _. .. .. :: :: c -- - } I LL - ? ? _.. . - - - .-. a _ w .. . - _ . -1 . - - _ . ,. t o .1 t -t t tt t l - a - I , - - . _ L 1 ... -y _ t - - - i S! r7l O T 0 V7 4 c? 0 r U- C ?l ?Tyd..? STAJf o? ti VNM'?? STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. P.O. BOX 25201, RALEIGH, N.C. 27611-5201 E. NORRIS TOLSON GOVERNOR December 22, 1998 US Army Corps of Engineers Raleigh Field Office 6508 Falls of the Neuse Road, Suitc 120 Raleigh, North Carolina 27615 ATTENTION: Mr. Eric Alsmeyer NCDOT Coordinator Dear Sir: SECRETARY Subject: Alleghany County, Replacement of Bridge No. 52 over Little River on SR 1172 and Bridge No. 56 over Pine Swamp Creek on SR 1278, Federal Project No. BRZ-1172(4), State Project No. 8.2700201. T.I.P. No. B-2803, Action ID 199708087 and 199708182. On July 31, 1997 we submitted a request for verification of Nationwide Permits 23 and 6 for replacement of the structures and for geotechnical work. The NW 23 verification was received on August 20, 1997. As described in our original submittal bridge No. 52 will be replaced at its existing location with a bridge 34 meters (110 feet) long and 6.0 meters (20 feet) wide and during construction traffic will be detoured on existing secondary roads. We had originally designed bridge No. 56 to be replaced with a triple barrel 3.0 meter x 2.4 meters (10 ft x 8 ft) reinforced concrete box culvert on new alignment with traffic maintained on the existing bridge during construction. The proposed culvert was to be a bottomless culvert, which complied with Condition 2 in the Wildlife Resources Commission (WRC) letter of August 8. 1997. Bottomless culverts must be anchored in bedrock, which must be at a depth of no more than five feet. The geotechnical borings revealed that the bedrock was deeper than five feet so we are not able to use a bottomless culvert. We have changed the design and will use a double barrel culvert 12 feet by 12 feet. The culvert will be buried one foot below the existing streambed and will have a 6- foot wide, meandering low flow channel with baffles for fish passage. Stone from the stream bed or 2 inch gravel will be placed in the culvert. We believe that this design complies with the goal of Condition 2. A copy of the bridge design report is attached to this letter. If you have any questions or need additional information please call Ms. Alice N. Gordon at 733-7844 Ext. 307. Sincerely, I? u4z ? w William D. Gilmore, P.L., Manager Planning and Environmental Branch cc: w/attachment Mr. David Franklin, Corps of Engineers, Wilmington Field Office Mr. John Dorney. NCDENR, Division of Watcr Quality Mr. Whit Webb, P.E., Program Development Branch Mr. R. L. Hill, P.E., Highway Design Branch Mr. A. L. Hankins, P.E., Hydraulics Unit Mr. William J. Rogers, P.E., Structure Design Unit Mr. Tom Shearin, P.E., Roadway Design Unit Mr. W. E. Hoke. P.E.. Division 11 Engineer Ms. Gail Grimes, P.E., P & E Project Planning Engineer o 71 - 1 1' N 14 -h H 4 - 4 1 • 1 ? , 1 i - ? 1. i. C 'S ' i l t t- 1 - _ ..., ..... . --- - -- --- - - t - -- - - - - -- - - --- - - -- -- -- I I- , i ... .... ... . .. . .. . 12 , ` - : A 14 MA 1 t ' C? 9 ..._ _ I -- ?._ . - - --- - - --- - - --- --- - - ' .. I ... . ..... ... .. __ .. ... .. 1. C __ .. _ . _ __ ._ _ . . .. .. .. .. . .. . ... -- On . .. __ __ *. _ -- _ _ _ _ _ 1 _ .... . .... ... .. .. ... .. .. .... . ... . ..... . .. 1 ? ._:_- .. .. . .. - -- -- - -- - -- --- --- -- -- - -- - - -- -- - --- --? .. .. .. .... . .... ... . . ... ... ?. .. ... .. . . .... .. .... . .. . "-- - " --" --- . -4 1:: _ _ - - - - .-t........t .... , .... . . ..... .. .. ... .. .... ... ...... .... ?... I - - - - - . . - - C i -_ _ ------ . . _ r { - ..;..... -..1 .... ... . .. .. . . . ... -- .. • _ .. .. ......... . .. .....i_ . -- .. - ... -- - - .. . . - --- - --- - -- -- - - - e -f 4 - - - - --- -- - ---- # - --- - -- - - .. . . - t -T t- -- -- - --- - - --- - -- --- -- -- - - - - - -- -- - - - - --- -- - -- --- -- -- -- - -- - - -- - -- . - - -- - --- - ----- - - . - - --- -- - -- -- -- -- -- -- - -- - - --- - -- -- -- t} i T-1 - I - - - - I"- IL I . . --- . f 1 ,. . r. .. .. . .. .. .. .. .. . .. ... .?. . . _. . .. .. . . .. , .. _._ -_ _ _ __ 171 0 T V M r . 1. U C J fi SUS 74 STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. P.O. BOX 25201, RALEIGH, N.C. 27611-5201 E. NORRIS TOLSON GovERNOR December 22, 1998 US Army Corps ol'Engineers Raleigh Field Office 6508 Falls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 ATTENTION: Mr. Eric Alsmeyer NCDOT Coordinator Dear Sir: SECRETARY Subiect: Alleghany County. Replacement of Bridge No. 52 over Little River on SR 1 172 and Bridge No. 56 over Pine Swamp Creek on SR 1278, Federal Project No. BRZ-1172(4), State Project No. 8.2700201. T.I.P. No. B-2803, Action ID 199708087 and 199708182. On July 31, 1997 we submitted a request for verification of Nationwide Permits 23 and 6 for replacement of the structures and for geotechnical work. The NW 23 verification was received on August 20, 1997. As described in our original submittal bridge No. 52 will be replaced at its existing location with a bridge 34 meters (1 10 feet) long and 6.0 meters (20 feet) wide and during construction traffic will be detoured on existing secondary roads. We had originally designed bridge No. 56 to be replaced with a triple barrel 3.0 meter x 2.4 meters (10 ft x 8 ft) reinforced concrete box culvert on new alignment with traffic maintained on the existing bridge durino construction. The proposed culvert was to be a bottomless culvert, which complied with Condition 2 in the Wildlife Resources Commission (WRC) letter of August 8, 1997. Bottomless culverts must be anchored in bedrock, which must be at a depth of no more than five feet. The geotechnical borings revealed that the bedrock was deeper than five feet so we are not able to use a bottomless culvert. We have changed the design and will use a double barrel culvert 12 feet by 12 feet. The culvert will be buried one foot below the existing streambed and will have a 6- foot wide, meandering low flow channel with baffles for fish passage. Stone from the stream bed or 2 inch gravel will be placed in the culvert. We believe that this design complies with the goal of Condition 2. A copy of the bridge design report is attached to this letter. If you have any questions or need additional information please call Ms. Alice N. Gordon at 733-7844 Ext. 307. Sincerely, v CALL ?J' William D. Gilmore. P.E., Manager Planning and Environmental Branch cc: w/attachment Mr. David Franklin, Corps of Engineers, Wilmington Field Office Mr. John Dorney, NCDENR, Division of Water Quality Mr. Whit Webb, P.E., Program Development Branch Mr. R. L. Hill, P.E., Highway Design Branch Mr. A. L. Hankins, P.E., Hydraulics Unit Mr. William J. Rogers, P.E., Structure Design Unit Mr. Tom Shearin, Y.E., Roadway Design Unit Mr. W. E. Hoke, P.E., Division 1 1 Engineer Ms. Gail Grimes, P.E., P & E Project Planning Engineer I TT lip org + x- NIL i v o o \I.J All, (? ! a . ... . I NC - __ - -• - - -- - -- --- . _ I - -- -- - --- - - --- - -- -- : .. . . r _ ;.. . _ _ _ V _y .. ?.. ... .... . .. ... .. . .... .. .. .. ... . . .. .. .. .. ... ... .. . .. - - - - - 1 7 l .. . . . .. . ... ..... . .... .. .. .. ... . ..... .. - ; - 1 _. . . .. .. ... ..... ... .. ... . . . .... ...... :-.. .-.. . - - - - --- ... .. . . . . .. .... - -- -- - - - - I -- - -- -- -- --- _ .. _ . _ . ..'.. _. .. .. _ . _. . , _r l.. 1 _ _ - -- --- -- - --- - -- t , . ? i Il rTl _ . _ _ ..; .... .. - _. .. - - - I - - - 4 -14 H t T [- XT 11 Q - .. -. _.. . . -.. * - c . - - 7 1 f 1 I I 1 I -:. (, + H - ff t 1 Q 0? ? r? O ?. d _ V ? O r O of) T Q 0 r U" s.f STA7[°? ww ?? STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. P.O. I30X 25201, RALEIGH, N.C. 27611-5201 E. NORRIS TOLSON GOVERNOR December 22, 1998 US Army Corps of Engineers Raleigh Field Office 6508 Falls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 ATTENTION: Mr. Eric Alsmeycr NCDOT Coordinator Dear Sir: SECRETARY Subject: Alleghany County, Replacement of Bridge No. 52 over Little River on SR 1 172 and Bridge No. 56 over Pine Swamp Creek on SR 1278, Federal Project No. BRZ-1172(4), State Project No. 8.2700201, T.I.P. No. B-2803, Action ID 199708087 and 199708182. On July 31, 1997 we submitted a request for verification of Nationwide Permits 23 and 6 for replacement of the structures and for geotechnical work. The NW 23 verification was received on August 20, 1997. As described in our original submittal bridge No. 52 will be replaced at its existing location with a bridge 34 meters (110 feet) long and 6.0 meters (20 feet) wide and during construction traffic will be detoured on existing secondary roads. We had originally designed bridge No. 56 to be replaced with a triple barrel 3.0 meter x 2.4 meters (10 ft x 8 ft) reinforced concrete box culvert on new alignment with traffic maintained on the existing bridge during construction. The proposed culvert was to be a bottomless culvert, which complied with Condition 2 in the Wildlife Resources Commission (WRC) letter of August 8, 1997. Bottomless culverts must be anchored in bedrock, which must be at a depth of no more than five feet. The geotechnical borings revealed that the bedrock was deeper than five feet so we are not able to use a bottomless culvert. We have changed the design and will use a double barrel culvert 12 feet by 12 feet. The culvert will be buried one foot below the existing streambed and will have a 6- foot wide, meandering low flow channel with baffles for fish passage. Stone from the stream bed or 2 inch gravel will be placed in the culvert. We believe that this design complies with the goal of Condition 2. A copy of the bridge design report is attached to this letter. If you have any questions or need additional information please call Ms. Alice N. Gordon at 733-7844 Ext. 307. Sincerely, William D. Gilmore, P.E., Manager Planning and Environmental Branch cc: w/attachment Mr. David Franklin, Corps of Engineers, Wilmington Field Office Mr. John Dorney, NCDENR, Division of Water Quality Mr. Whit Webb, P.E., Program Development Branch Mr. R. L. Hill, P.E., Highway Design Branch Mr. A. L. Hankins, P.E., Hydraulics Unit Mr. William J. Rogers, P.E., Structure Design Unit Mr. Tom Shearin, P.E., Roadway Design Unit Mr. W. E. Hoke, P.E., Division I 1 Engineer Ms. Gail Grimes, P.E., P & I Project Planning Engineer 41 11&1 -4 -1 t?H 1-1 1-T I T11 41, t ?. 1 } 1 1. 1 L • ' ._ . 1 x _.. pr- _. .. _ . - _ iC e 7- - I - - _...._ .. .. t :... _ _. ... _. ... - , r t -- --- --- --- -- V • - .. i.... - •_• _. - - _.._ - __ - - - "_ . .?.. ..i .. 1 ...... .. . .. .. ... .. .. ... .. .. . .. . .. .. .... .. .. .... - I -_.: .. .. . II . ......... ..... - .. .. . .. .... . .:.. . .. . ..... ... . . ?JJ [a 4 { .:. f A MU ?' L - CfJ 1 - Nd i { 1 - - - - 1 :} .. - AAl k _ { -- --- -- - -- -- --- - --- - - - - - 1 ,? - i - - - V ,.. r . _ ._ . ... . :. oe . - . ... .. . . .... . . ?! - 1 La i i -- t. - - t .. .... - -- - - - : - - - - - - - - - - - -- - 4-1- - 1 ..?.... . 1 : z { - --- --- - - -- - - -- - -- - - - I - _ .. ; _ . r.. . _. 3 7 1 1 ..? . . - I -- --- - -- -- - -- --- - ?.. 1.... I to A - ?... - - - - _ " . . _ . .. .. .. .. . 7 16 , i Y - - - - - ly LL ' I J h al A \ c 1 fLy 1 I i I 1 --- - --- .. --- --- -- _ ' { . - T r d L k 010 0 - --- -- --- --- p? p0 d cA O If) M_ 0 -4 c'? C: U C a..•SWf auw STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. P.O. BOX 25201. RALEIGH. N.C. 27611-5201 E. NORRIS TOLSON GOVERNOR December 22, 1998 US Army Corps of Engineers Raleigh Field 011icL 6508 Falls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 ATTENTION: Mr. Eric Alsmeyer NCDOT Coordinator Dear Sir: SECRETARY Subject: Alleghany County, Replacement of Bridge No. 52 over Little River on SR 1172 and Bridge No. 56 over Pine Swamp Creek on SR 1278. Federal Project No. BRZ-1172(4), State Project No. 8.2700201. T.I.P. No. B-2803, Action ID 199708087 and 199708182. On July 31, 1997 we submitted a request for verification of Nationwide Permits 23 and 6 for replacement of the structures and for geotechnical work. The NW 23 verification was received on August 20, 1997. As described in our original submittal bridge No. 52 will be replaced at its existing location with a bridge 34 meters (110 feet) long and 6.0 meters (20 feet) wide and during construction traffic will be detoured on existing secondary roads. We had originally designed bridge No. 56 to be replaced with a triple barrel 3.0 meter x 2.4 meters (10 ft x 8 ft) reinforced concrete box culvert on new alignment with traffic maintained on the existing bridge during construction. The proposed culvert was to be a bottomless culvert, which complied with Condition 2 in the Wildlife Resources Commission (WRC) letter of August 8, 1997. Bottomless culverts must be anchored in bedrock, which must be at a depth of no more than five feet. The geotechnical borings It 4h revealed that the bedrock was deeper than five feet so we are not able to use a bottomless culvert. We have changed the design and will use a double barrel culvert 12 feet by 12 feet. The culvert will be buried one foot below the existing streambed and will have a 6- foot wide, meandering low flow channel with baffles for fish passage. Stone from the stream bed or 2 inch gravel will be placed in the culvert. We believe that this design complies with the goal of Condition 2. A copy of the bridge design report is attached to this letter. If you have any questions or need additional information please call Ms. Alice N. Gordon at 733-7844 Ext. 307. Sincerely, IJ coz-' ?J" ?? William D. Gilmore, P.E., Manager Planning and Environmental Branch cc: w/attachment Mr. David Franklin, Corps of Engineers, Wilmington Field Office Mr. John Dorney, NCDENR, Division of Water (duality Mr. Whit Webb, P.E., Program Development Branch Mr. R. L. Hill, P.E., Highway Design Branch Mr. A. L. Hankins, P.E., Hydraulics Unit Mr. William J. Rogers, P.E., Structure Design Unit Mr. Tom Shearin, P.E., Roadway Design Unit Mr. W. E. Hoke, P.E., Division 1 1 Engineer Ms. Gail Grimes, P.E., P & E Project Planning Engineer ... .. .. .• - - + x - - _ 4- r ? 1 - 1 - - - .... ......... ... .... .. - - - - - J _ ._ .. -.. _ I ....._ . ... .. .... . I lia; ff: . til Q ..1 ..1 .. .. 1 . ----- - _ . .... .. ?} + - S - - L r -- V - ... . ... .. :.. _:. : . - - . -4 - i - ...... .. ... ... ...... ... . :.:.. . . V 1._ ? .. .. .... .. .. . .. .. .. .. . .. .... ... .. .. - - - - -- --- -- --- --- - - --- -- - 01 - / / I - F - t r. I t.. 1 _ .. ?- ` - 1 --- - - - --- - -- - - .. --- -- - -- -- - - -- ---- -- --- -- --- - -- --- -- - -- - t - -- --- -- --- - -- -- - -- --- < ._ .... ?.. - - ._ -- - - 11 - f-i --- - - - _ I _ -41 r , - - - t - FItL W .. .. ._ _. .. .. _.. .. _. ... L_. .. _. .. . 1 . - - - - _ ILL LL -- -- --- -- - - l .? --- - -- --- --- - :.. . 1 . :. .... ... ... ...... ..... .: -- ... .. •- - .. .. _ . 1 - - Y _ i U7 V y - 0 In fi 0 -F r: U' 1014 ?Swlr ?d ye. STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JAMES B. HUNT JR. P.O. BOX 25201, RALEIGH, N.C. 27611-5201 E. NORRIS TOLSON GOVERNOR December 22, 1998 US Army Corps of Engineers Raleigh Field Office 6508 Falls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 ATTENTION: Mr. Eric Alsmeycr NCDOT Coordinator Dear Sir: SECRETARY Subject: Alleghany County, Replacement of Bridge No. 52 over Little River on SR 1172 and Bridge No. 56 over Pine Swamp Creek on SR 1278, Federal Project No. BRZ-1172(4), State Project No. 8.2700201, T.I.P. No. B-2803, Action ID 199708087 and 199708182. On July 31, 1997 we submitted a request for verification of Nationwide Permits 23 and 6 for replacement of the structures and for geotechnical work. The NW 23 verification was received on August 20, 1997. As described in our original submittal bridge No. 52 will be replaced at its existing location with a bridge 34 meters (110 feet) long and 6.0 meters (20 feet) wide and during construction traffic will be detoured on existing secondary roads. We had originally designed bridge No. 56 to be replaced with a triple barrel 3.0 meter x 2.4 meters (10 ft x 8 ft) reinforced concrete box culvert on new alignment with traffic maintained on the existing bridge during construction. The proposed culvert was to be a bottomless culvert, which complied with Condition 2 in the Wildlife Resources Commission (WRC) letter of August 8, 1997. Bottomless culverts must be anchored in bedrock, which must be at a depth of no more than five feet. The geotechnical borings revealed that the bedrock was. deeper than five feet so we are not able to use a bottomless culvert. We have changed the design and will use a double barrel culvert 12 feet by 12 feet. The culvert will be buried one foot below the existing streambed and will have a 6- foot wide, meandering low flow channel with baffles for fish passage. Stone from the stream bed or 2 inch gravel will be placed in the culvert. We believe that this design complies with the goal of Condition 2. A copy of the bridge design report is attached to this letter. If you have any questions or need additional information please call Ms. Alice N. Gordon at 733-7844 Ext. 307. Sincerely, v- c?jz' ? William I). Gilmore, P.E., Manager Planning and Environmental Branch cc: w/attachment Mr. David Franklin, Corps of Engineers, Wilmington Field Office Mr. John Dorney, NCDENR, Division of Water Quality Mr. Whit Webb, P.E., Program Development Branch Mr. R. L. Hill, Y.E., Highway Design Branch Mr. A. L. Hankins, P.E., Hydraulics Unit Mr. William J. Rogers, P.E., Structure Design Unit Mr. Tom Shearin, P.E., Roadway Design Unit Mr. W. E. Hoke, P.E., Division 11 Engineer Ms. Gail Grimes, P.E., P & E Project Planning Engineer 1 . .... ... I , - ... ... .... T T I - 1 - C --, - - - - ! °• - µ 71 ...._ • - --- - -- -•- - f i 71 - J I-. _, I .. - - - _ - - - - - - ! - - - Q r ._.{ .. .. .. ... ..... - .... .... = - - - - - I : i. : % - - I ? ._ - T .. ... ........ ?. - - V :.. 1 .. _ ?.. _. _. _. .. _ .. - .. - -------- - I . - - - - - 1 + 4 - + W fl L . i - - -{ - - _ _ pi T. T i.. ..... 1 ... ...... . ... . .. . .... .. ... . ! - . ...l..- i l- 1 - I J 0 z { - - 4 -- - -- --- - - --- - -- 1 j i. .. - - ' - - --- - - -- --- --- - -- 14 . -f I t 7 9 a ll [ - .. .... ... .... ..... i .... .. I _ T _ - - T. ... _ t ? .. .. : = . .._ - . - - - 1 - - - - --- - -- - ' - - -- --- --- - --- - - -- - -- - --- - - -- t ft t f -' d - - - _ - : I LL " K A i ' . y - `- r ' ? i - 0.00 i 1 . M H H 00, O U? _F f? i C