123460-2026-SWB-40(2171)-4.pdf

PDF 3 MB Posted Aug 6, 2026

Attached to: TM 1789-Water Transmission Main Replacements - Addendum 3 continued
Solicitation number: 123460-2026-SWB-40(2171)
Issued by: Orleans Parish, New Orleans City, Louisiana

About this file

Written by GovTribe AI · Aug 24, 2026

This is a Utility Plan and Profile drawing sheet prepared by Neel Schaffer, Inc. for the City of New Orleans Department of Public Works, detailing Project TM008: Transmission Main & Water Main Replacement along the 7200-7300 blocks of Cohn Street. The project encompasses the installation of approximately 593 feet of 30-inch ductile iron water main, 610 feet of 8-inch water main, 162 feet of 15-inch reinforced concrete pipe (RCP) Class IV drainage, and 20 feet of 12-inch RCP drainage. The work includes tie-ins to existing water and sewer mains, installation of new water valves and manholes, removal of existing infrastructure, and coordination with utility providers including Entergy New Orleans and the Sewerage & Water Board. The drawing, dated January 4, 2024, indicates construction sequencing requirements, including removal of existing drainage and structures, installation of proposed utilities in new locations, and phased tie-ins to minimize service disruptions. The project requires contractor coordination regarding valve closures on the existing 30-inch transmission main and mandates that all joints within 40 feet of proposed bends, crosses, and tees be restrained per specifications.

Per Addendum 1 dated July 22, 2026, removal and backfill of the 30-inch water main will be performed at no direct pay. RCP with less than three feet of cover shall be Class IV, with 26 feet of 15-inch Class IV RCP to be paid under item C701(53)F(1) as included in the addendum. All existing drainage house connections shall be replaced from the new main to the back of curb at no direct pay. The work requires minimum 1.5 percent cross slope from the centerline of roadway in each direction to provide positive drainage to nearest catch basins, and new pavement elevations at intersections must be adjusted to be compatible with existing grades. The project is subject to Louisiana prevailing wage requirements and involves multiple utility coordination elements to ensure service continuity during construction.

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File	Type	Posted
123460-2026-SWB-40(2171)-3.pdf	PDF	Aug 6, 2026
123460-2026-SWB-40(2171)-2.pdf	PDF	Jul 31, 2026
123460-2026-SWB-40(2171)-1.pdf	PDF	Jul 31, 2026
123460-2026-SWB-40(2171).pdf	PDF	Jul 6, 2026

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CITY

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ELECTRIC PANEL

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APPARENT R/W

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8" CLAY SEWER LINE PER SWB UNIT SHEETS

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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27" SEWER LINE PER SWB UNIT SHEETS

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PER S&WB UNIT SHEETS

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PER S&WB UNIT SHEETS

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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6' WOOD

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8' WROUGHT IRON

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TBM "O"

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EL= 0.14'

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SEE DETAIL

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REQ'D. 593' OF 30" D.I. WATERMAIN

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TYPE "C" CB ADJ GUTTER = -0.05' NW INV. = -3.22' S INV. = -3.25'

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COMBO CB/MH GUTTER = -0.05' NE INV. = -3.45' SE INV. = -3.53'

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REQ'D. TIE NEW 8" WM INTO EX. 6" WM W/ 6" CROSS & (1) 8"X6" REDUCER

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REQ'D. NEW 8" WATER VALVE AND MANHOLE

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REQ'D. 162' OF NEW 15" RCP CLASS IV 0.33%

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REQ'D. 20' OF NEW 12" RCP 0.35%

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REQ'D. 610' OF NEW 8" WATER MAIN

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TIE NEW 30" WM INTO EX. 30" WM BEYOND THE SEWER PUMP STATION

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STA. 98+42 REQ'D. NO. 1 DMH NE INV. = -3.15' SE INV. = -3.15'

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REQ'D. 30"-45°HORIZ BEND

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REQ'D. 30"-45°HORIZ BEND

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SEE SHET N0. 4 FOR CULVERT CROSSING DETAIL

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LOWERLINE STREET

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COHN STREET

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(SOUTHEAST BOUND)(ASPHALT)

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REMOVE EXIST. DMH & DRAIN RCP

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STA: 98+41.73 OFF:=-16.48

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REQ'D. TIE NEW 30" WM INTO EXIST. 30" WM

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REQ'D. COMBO CB/MH

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INV. -3.53'

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REQ'D. 15" RCP @ 0.33%

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REQ'D. 15" RCP @ 0.35%

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REQ'D. NEW 8" VALVE & MH

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REQ'D. 30" D.I. WM

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REQ'D. NEW DMH

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CROSSING THRU BOX CULVERT ±20'

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REQ'D. 8" PVC WATERMAIN

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REQ'D TIE NEW 8" WM INTO EX. 6" WM W/ 6" CROSS & (1) 8"X6" REDUCER

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NO.

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DATE

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REVISION DESCRIPTION

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DESIGNED

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NEEL SCHAFFER, INC.

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SHEET NUMBER

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DATE

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SHEET

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1340 POYDRAS ST. SUITE 1950, NEW ORLEANS, LA 70112

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CITY OF NEW ORLEANS, DEPARTMENT OF PUBLIC WORKS

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HORZ 1"=20'

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VERT 1"=2'

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PROJECT ID: TM008 TRANSMISSION MAIN & WATER MAIN REPLACEMENT

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DRAWING NO: 8967-W

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PROJECT NO. TM008

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TM008: TRANSMISSION MAIN & WATER MAIN REPLACEMENT

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7300 BLOCK OF COHN STREET

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(LOWERLINE STREET TO PINE STREET)

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AutoCAD SHX Text NOTE: 1. SEE COHN ST PAVING PLAN FOR LIMITS OF SEE COHN ST PAVING PLAN FOR LIMITS OF ROADWAY RECONSTRUCTION. 2. CONTRACTOR TO COORDINATE VALVE CONTRACTOR TO COORDINATE VALVE CLOSURES OF EXISTING 30" WATER MAIN WITH S&WB. IF FLOW CANNOT BE SUFFICIENTLY STOPPED BY VALVE CLOSURE. 30" LINE STOP(S) MAY BE UTILIZED UPON APPROVAL BY S&WB. 3. FOR 30" T.M. MAIN, RESTRAIN ALL JOINTS FOR 30" T.M. MAIN, RESTRAIN ALL JOINTS WITHIN 40' OF PROPOSED BENDS, CROSSES, TEES, FITTINGS ETC. 4. NEW PAVEMENT ELEVATIONS AT NEW PAVEMENT ELEVATIONS AT INTERSECTIONS SHALL BE ADJUSTED BY THE CONTRACTOR TO BE COMPATIBLE WITH EXISTING GRADES AND TO PROVIDE POSITIVE DRAINAGE TO NEAREST CATCH BASINS. MIN. 1.5% CROSS SLOPE FROM CENTER LINE OF ROADWAY IN EACH DIRECTION IS REQUIRED. 5. ALL EX. DRAIN HOUSE CONN. SHALL BE ALL EX. DRAIN HOUSE CONN. SHALL BE REPLACED FROM NEW MAIN TO BACK OF CURB. (NO DIRECT PAY)

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EHP BOX

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LEGEND:

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MATCHLINE: STA. 100+00

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7200-7300 COHN SUGGESTED UTILITY CONSTRUCTION SEQUENCING:

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1. REMOVE EX. DRAINAGE & STRUCTURES. REMOVE EX. DRAINAGE & STRUCTURES. 2A. INSTALL PROP. 8" DISTRIBUTION WATERLINE IN INSTALL PROP. 8" DISTRIBUTION WATERLINE IN EXIST. DRAINAGE LOCATION. 2B. INSTALL PROP. DRAINAGE & STRUCTURES IN INSTALL PROP. DRAINAGE & STRUCTURES IN NEW LOCATION. 2C. TIE PROP. 8" WATERLINE IN & SWITCH SERVICES TIE PROP. 8" WATERLINE IN & SWITCH SERVICES FROM EXIST. 30" TRANSMISSION MAIN. 3A. INSTALL PROP. 30" TRANSMISSION MAIN IN INSTALL PROP. 30" TRANSMISSION MAIN IN NEW LOCATION. 3B. SHUT DOWN EXIST. 30" TRANSMISSION MAIN SHUT DOWN EXIST. 30" TRANSMISSION MAIN VIA VALVE CLOSURE OR APPROVED LINE STOPS. 3C. TIE IN PROPOSED 30" TRANSMISSION MAIN. 4A. REMOVE + BACKFILL EXIST. 30" TRANSMISSION REMOVE + BACKFILL EXIST. 30" TRANSMISSION MAIN. .

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UTILITY PLAN AND PROFILE

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AutoCAD SHX Text ADDENDUM NOTES: 1. REMOVE + BACKFILL OF THE 30" WATER REMOVE + BACKFILL OF THE 30" WATER MAIN WILL BE AT NO DIRECT PAY. 2. RCP WITH LESS THAN 3' OF COVER SHALL RCP WITH LESS THAN 3' OF COVER SHALL BE CLASS IV. THE 26' OF 15" RCPA SHOWN ON SHEET 13 SHALL BE PAID BY ITEM C701(53)F(1) - RCP 15", CLASS IV, INCLUDED IN THIS ADDENDUM.

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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EL= 0.91'

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EL= 1.72'

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CONC DRIVE

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6' WROUGHT IRON

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TWO STORY WOOD FRAME BUILDING ON PIERS

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TWO STORY WOOD FRAME BUILDING ON SLAB

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GARAGE

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APPROXIMATE LOCATION OF UNDERGROUND FIBER OPTIC LINE PER UNITI FIBER MAP

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STEPS

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3' WOOD

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30" CI SEWER LINE PER SWB UNIT SHEETS

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30" SEWER LINE PER SWB UNIT SHEETS

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30" SEWER LINE PER SWB UNIT SHEETS

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8" CLAY SEWER LINE PER SWB UNIT SHEETS

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8" CLAY SEWER LINE PER SWB UNIT SHEETS

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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APPROXIMATE LOCATION OF 2" GAS LINE PER ENTERGY NEW ORLEANS MAP

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APPARENT R/W

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TBM "P"

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EL=-0.13'

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PINE STREET

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(ASPHALT)

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PLUG AND FILL 12" WM WITH SAND CEMENT MIXTURE

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REMOVE EXIST. 30" EXIST. 30" WATERMAIN

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REQ'D. TIE NEW 8" WM INTO EX. 8" WM W/8"X6" REDUCER

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(SOUTHEAST BOUND)(ASPHALT)

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COHN STREET

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REQ'D. 32' 32' OF 12" PVC WM

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(MIN.)

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REQ'D. 8"X8" CROSS WITH (1) 12"X8" REDUCER

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REQ'D. NEW NEW 12" VALVE IN MANHOLE

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REMOVE EX. FH

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REQ'D. NEW 8" VALVE IN MANHOLE

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REQ'D. NEW FH W/6" VALVE & VALVE BOX

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REQ'D. NEW 68' OF 8" PVC WM

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REQ'D. TIE 12" WM INTO EX. 12" WM

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REQ'D. TIE NEW 30" TIE NEW 30" WM INTO EXIST. 30" WM

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REQ'D. 38' OF NEW 15" RCP CLASS IV @ 0.35%

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STA. 101+25 REQ'D. VERT. CB NO. 1 GUTTER = -0.48' S INV. = -3.48'

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TYPE "C" CB ADJ GUTTER = -1.01' S INV. = -4.01'

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REQ'D. 100'± OF NEW15" RCP 0.35%

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TYPE "C" CB ADJ GUTTER = -1.15' S INV. = -4.40'

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REQ'D. 41' OF NEW 15" RCP @ 0.35%

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COMBO CB/MH GUTTER = -0.48' NW INV. = -4.00' NE INV. = -3.73'

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REQ'D. 24' OF NEW 15" RCP LATERAL @ 1.00%

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COMBO CB/MH GUTTER = -1.01' NE INV. = -4.26' SE INV. = -5.49'

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REQ'D. 24' OF NEW 15" RCP LATERAL @ 1.00%

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REMOVE EX. 10" DRAIN LINE ±265'

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REQ'D. 24' OF NEW 15" RCP LATERAL @ 1.00%

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COMBO CB/MH GUT. = -1.15' NW = -5.85' SE = -5.85' NE = -4.65'

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REMOVE EX. DMH. REMOVE AND REPLACE 12" WITH 15" RCPA

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REMOVE EX. DMH. PERFORM 15" POINT REPAIR.

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INSTALL NEW 8" PVC WATER MAIN ±350'

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REQ'D. TIE NEW 8" WM INTO EX. 6" WM W/ 6" TEE & (1) 8"X6" REDUCER

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TYPE "C" CB ADJ GUTTER = -0.34' S INV. = -3.50'

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REQ'D. 60' OF NEW 15" RCP CLASS IV 0.33%

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COMBO CB/MH GUTTER = -0.34' NE INV. = -3.75' NW INV. = -4.06 SE INV. = -4.06'

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REMOVE EX. 15" DL

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BROADWAY STREET

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(SOUTHBOUND)(ASPHALT) (73' R/W FOR NORTH & SOUTHBOUND)

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BROADWAY STREET

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(NORTHBOUND)(ASPHALT) (73' R/W FOR NORTH & SOUTHBOUND)

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REQ'D. 30"-45°HORIZ BEND

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REMOVE EX. VALVE

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REMOVE EX. DMH

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REMOVE EX. DRAIN LINES

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SURVEY BASELINE

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SEWER MANHOLE (179) TC=-0.10'

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4'-6" MIN.

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PROPOSED GUTTERLINE (BOTH SIDES)

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INV. -5.49'

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INV. -5.85'

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INV. -5.98'

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INV. -4.26'

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INV. -4.06'

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REQ'D. COMBO CB/MH

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REQ'D. 15" RCP @ 0.33%

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REQ'D. TIE NEW 30" WM INTO EXIST. 30" WM

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INV. -4.14'

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3'-6" MIN.

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REQ'D. NEW DMH

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NO.

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REVISION DESCRIPTION

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DESIGNED

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NEEL SCHAFFER, INC.

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SHEET NUMBER

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SHEET

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1340 POYDRAS ST. SUITE 1950, NEW ORLEANS, LA 70112

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CITY OF NEW ORLEANS, DEPARTMENT OF PUBLIC WORKS

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HORZ 1"=20'

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VERT 1"=2'

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PROJECT ID: TM008 TRANSMISSION MAIN & WATER MAIN REPLACEMENT

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DRAWING NO: 8967-W

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PROJECT NO. TM008

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TM008: TRANSMISSION MAIN & WATER MAIN REPLACEMENT

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7200 BLOCK OF COHN STREET

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(PINE STREET TO BROADWAY STREET)

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EHP BOX

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LEGEND:

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MATCHLINE: STA. 100+00

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UTILITY PLAN AND PROFILE

AutoCAD SHX Text NOTE: 1. EX. VALVES TO BE REMOVED & EX. VALVES TO BE REMOVED & RETURNED SWBNO. 2. SEE SHEETS 4&5 FOR THE TIE SEE SHEETS 4&5 FOR THE TIE IN DETAILS.

AutoCAD SHX Text NOTE: 1. SEE COHN ST PAVING PLAN FOR SEE COHN ST PAVING PLAN FOR LIMITS OF ROADWAY RECONSTRUCTION. 2. CONTRACTOR TO COORDINATE VALVE CONTRACTOR TO COORDINATE VALVE CLOSURES OF EXISTING 30" WATER MAIN WITH S&WB. IF FLOW CANNOT BE SUFFICIENTLY STOPPED BY VALVE CLOSURE. 30" LINE STOP(S) MAY BE UTILIZED UPON APPROVAL BY S&WB. 3. FOR 30" T.M. MAIN, RESTRAIN ALL FOR 30" T.M. MAIN, RESTRAIN ALL JOINTS WITHIN 40' OF PROPOSED BENDS, CROSSES, TEES, FITTINGS ETC. 4. NEW PAVEMENT ELEVATIONS AT NEW PAVEMENT ELEVATIONS AT INTERSECTIONS SHALL BE ADJUSTED BY THE CONTRACTOR TO BE COMPATIBLE WITH EXISTING GRADES AND TO PROVIDE POSITIVE DRAINAGE TO NEAREST CATCH BASINS. MIN. 1.5% CROSS SLOPE FROM CENTER LINE OF ROADWAY IN EACH DIRECTION IS REQUIRED. 5. ALL EX. DRAIN HOUSE CONN. SHALL ALL EX. DRAIN HOUSE CONN. SHALL BE REPLACED FROM NEW MAIN TO BACK OF CURB. (NO DIRECT PAY)

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DELETING OF 30" SFM SCOPE

AutoCAD SHX Text

WDH

AutoCAD SHX Text ADDENDUM NOTES: 1. REMOVE + BACKFILL OF THE 30" WATER REMOVE + BACKFILL OF THE 30" WATER MAIN WILL BE AT NO DIRECT PAY. 2. RCP WITH LESS THAN 3' OF COVER RCP WITH LESS THAN 3' OF COVER SHALL BE CLASS IV. THE 26' OF 15" RCPA SHOWN SHALL BE PAID BY ITEM C701(53)F(1) - RCP 15", CLASS IV, INCLUDED IN THIS ADDENDUM.

Sheets and Views

002a - HOUSE CONNECTIONS-2

TM008_Sheet 12_Cohn Utility Plan_Addendum 1_7.22.2026.pdf

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12-COHN STREET

TM008_Sheet 13_Cohn Utility Plan_Addendum 1_7.22.2026.pdf

Sheets and Views

13-COHN STREET

File details come from the government source that posted it. Updated Aug 24, 2026.