A21 - UnLocked_WHIOB_RTA Set_UpdatedFEB25.pdf
PDF 23 MB Posted
- Attached to
- Maintenance Dredging, Wilmington Harbor Inner Ocean Bar Federal contract opportunity
- Solicitation number
- W912PM25BA003
About this file
This is a set of RTA (Ready to Advertise) drawings for a maintenance dredging project at Wilmington Harbor Inner Ocean Bar in Brunswick County, North Carolina, issued by the US Army Corps of Engineers Wilmington District with solicitation number W912PM25BA003 and contract number W912PM25XXXX, dated February 2025.
The drawings detail maintenance dredging work in multiple areas including Smith Island Channel, Baldhead Shoal Channel Reaches 1 and 2, and Caswell Beach placement areas. The project includes both base and optional dredging areas with typical sections showing a 6-foot NAVD88 berm elevation and 210-foot berm width. Key technical requirements include avoiding underwater electrical distribution cables and a water supply line between Oak Island and Bald Head Island. The drawings provide detailed cross-sections, beach fill profiles, and construction baseline information. Archaeological restricted areas are noted near Fort Caswell and must be avoided. Beach placement areas are designated along Caswell Beach, with transition zones and specific station locations provided. Survey data from February 2023 is referenced, with all elevations referenced to NAVD88 datum and horizontal coordinates based on the NC State Plane system.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| B1 - WH IOB Bid Abstract.pdf | ||
| A21 - W9129M25BA003-AMDT0003-PACKAGE.pdf | ||
| A21 - W912PM25BA0030002_FY25WHIOB -AMDT0002 - Final Conformed Copy.pdf | ||
| A21 - REV1-W912PM25BA003_AMDT0002_PACKAGE.pdf | ||
| A21 - WAGE DETERMINATION - NC20250019 - Dated 02-21-2025.pdf | ||
| A2 - Smith Island Channel_Historical_1998-2023.pdf | ||
| A2 - Baldhead_Shoal_Reach_1_Historical_1998-2012.pdf | ||
| A2 - Smith Island Channel_2023_Vibracores.pdf | ||
| A2 - Baldhead_Shoal_Reach_2_Historical_1998-2008.pdf | ||
| A21 - W912PM25BA003_FY25WHIOB-AMDT0001-Conformed Copy.pdf | ||
| A21 - W912PM25BA003_FY25WHIOB-AMDT0001-PACKAGE - Final.pdf | ||
| A21 - LOCKED_WHIOB_RTA Set_UpdatedFEB25.pdf | ||
| A21 - Solicitation - W912PM25BA003.pdf | ||
| A21 - RTA-SPECS1-W912PM24BA003-FY26WHIOB.pdf |
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Text version
HARRIS.PATRICK.KEVIN.1410079573
Digitally signed by HARRIS.PATRICK.KEVIN.1410079573
DN: CN=HARRIS.PATRICK.KEVIN.1410079573,
OU=USA, OU=PKI, OU=DoD, O=U.S. Government, C=US Date: 2025.02.28 08:14:35-05'00'
MURPHY.TAMARA.C.1386322240 Digitally signed by MURPHY.TAMARA.C.1386322240 Date: 2025.02.28 10:15:40 -05'00'
NCSR 1100
CASWELL BEACH RD.
POB STA. 0+00
N:52400.04 E:2295057.16
PI STA. 10+00
N:52663.93 E:2294092.61
PI STA. 36+00
N:53252.23 E:2291560.04
0+001+002+003+004+005+006+007+008+009+0010+0011+0012+0013+0014+0015+0016+0017+0018+0019+0020+0021+0022+0023+0024+0025+0026+0027+0028+0029+0030+0031+0032+0033+0034+0035+0036+0037+0038+0039+0040+0041+0042+0043+0044+0045+0046+0047+0048+0049+0050+00
MHW
MHW
MHW
MHW
MHW
0'
0'
0'
0'
6' BERM ELEVATION
6' BERM ELEVATION
TRANSITION AREA
STA. 28+00 TO 30+00
TRANSITION AREA STA. 4+00 TO 7+00
-10
-10
-10
-5
-5
-5
-5
NCSR 1100CASWELL BEACH RD.
CEAN G
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PI STA. 51+00
N:53581.79 E:2290096.69
PI STA. 70+00
N:54234.71 E:2288312.40
49+0050+0051+0052+0053+0054+0055+0056+0057+0058+0059+0060+0061+0062+0063+0064+0065+0066+0067+0068+0069+0070+0071+0072+0073+0074+0075+0076+0077+0078+0079+0080+0081+0082+0083+0084+0085+0086+0087+0088+0089+0090+0091+0092+0093+0094+0095+0096+0097+0098+0099+00100+00101+00102+00103+00104+00105+00106+00+00
MHW
MHW
MHW
MHW
MHW 21
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0'
0'
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6' BERM ELEVATION
6' BERM ELEVATION
TRANSITION AREASTA. 69+90 TO 72+00
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EXISTING ROADS (APPROX.)
1" = 200' 200 100 0 200 400
SCALE IN FEET
EXISTING MHW (1.8' - APPROX.)
LEGEND
NOTES:
1. THE WIDTH OF THE BERM IS DEPENDENT UPON THE PROPORTIONAL QUANTITY OF SAND TO BE
PLACED AT THE TIME OF CONSTRUCTION. THE GOVERNMENT DETERMINATION OF THE CHANNEL
DREDGING PRISM AND BEACH PROFILE SURVEYS, ALONG WITH THE SLOPE OF THE MATERIAL
DURING PLACEMENT WILL BE THE BASIS FOR DETERMINING THE WIDTH OF THE BERM.
2. THE BERM SLOPE IS DEPENDENT UPON MATERIAL PROPERTIES AND WAVE ENVIRONMENT
DURING PLACEMENT.
3. THE EXISTING MHW LINE WAS INTERPOLATED FROM SURVEYS TAKEN APRIL 2024.
4. HORIZONTAL COORDINATES BASED ON NC STATE PLANE (NAD83).
VERTICAL CONTROL BASED ON NAVD88 DATUM.
5. PHOTO FROM ESRI/MAXAR, DATED SEPTEMBER 2023
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105+00106+00107+00108+00109+00110+00111+00112+00113+00114+00115+00116+00117+00118+00119+00120+00121+00122+00123+00124+00125+00126+00127+00128+00129+00130+00131+00132+00133+00134+00135+00136+00137+00138+00139+00140+00141+00142+00143+00144+00145+00146+00147+00148+00149+00150+00151+00152+00153+00154+00155+00156+00157+00158+00159+00160+00161+00162+00+00
MHW
MHW
MHWMHW
0'
0'
0'
0'
0'
0'6' BERM ELEVATION
6' BERM ELEVATION
6' BERM ELEVATION
-5
-5
-5
-5
-10
-10
-10
BASE CONTRACT PLACEMENT LIMITSCONTRACT OPTION PLACEMENT LIMITS
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N:57225.67 E:2278620.75
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N:57848.50 E:2276044.97
1162+00163+00164+00165+00166+00167+00168+00169+00170+00171+00172+00173+00174+00175+00176+00177+00178+00179+00180+00181+00182+00183+00184+00185+00186+00187+00188+00189+00190+00191+00192+00193+00194+00195+00196+00197+00198+00199+00200+00201+00202+00203+00204+00205+00206+00207+00208+00209+00210+00211+00212+00213+00214+00215+00216+00217+00218+00219+000
MHW
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0'
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6' BERM ELEVATION
6' BERM ELEVATION
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EXISTING ROADS (APPROX.)
1" = 200' 200 100 0 200 400
SCALE IN FEET
EXISTING MHW (1.8' - APPROX.)
LEGENDNOTES:
1. THE WIDTH OF THE BERM IS DEPENDENT UPON THE PROPORTIONAL QUANTITY OF SAND TO BE
PLACED AT THE TIME OF CONSTRUCTION. THE GOVERNMENT DETERMINATION OF THE CHANNEL
DREDGING PRISM AND BEACH PROFILE SURVEYS, ALONG WITH THE SLOPE OF THE MATERIAL
DURING PLACEMENT WILL BE THE BASIS FOR DETERMINING THE WIDTH OF THE BERM.
2. THE BERM SLOPE IS DEPENDENT UPON MATERIAL PROPERTIES AND WAVE ENVIRONMENT
DURING PLACEMENT.
3. THE EXISTING MHW LINE WAS INTERPOLATED FROM SURVEYS TAKEN APRIL 2024.
4. HORIZONTAL COORDINATES BASED ON NC STATE PLANE (NAD83).
VERTICAL CONTROL BASED ON NAVD88 DATUM.
5. PHOTO FROM ERSI/MAXAR, DATED MAY & SEPTEMBER 2023 CN105
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STR
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PI STA. 235+00
N:58596.59 E: 2272421.40
POE STA. 262+00
N:59064.49 E:2269762.25
SE 55TH
STR
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SE 52N
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STR
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218219+00220+00221+00222+00223+00224+00225+00226+00227+00228+00229+00230+00231+00232+00233+00234+00 235+00
236+00 237+00
238+00 239+00
240+00 241+00
242+00 243+00
244+00 245+00
246+00 247+00
248+00 249+00
250+00 251+00
252+00 253+00
254+00 255+00
256+00 257+00
258+00 259+00
260+00 261+00
262+00 263+00
264+00 265+00
266+00 267+00
268+00 269+00
270+00 271+00
272+00 273+00
274+00 275+00
276+00 +00
MHW
MHW
MHW
MHW
0'
0'
0'
0'
6' BERM ELEVATION
6' BERM ELEVATION
TRANSITION AREA
STA. 250+00 TO 254+00
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-5
-15
-10
MHW
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CASWELL BEACH RD.
MHW
CONSTRUCTION LIMITS
SURVEY ELEVATION
BEACH FILL (NEW WORK)
EXISTING ROADS (APPROX.)
1" = 200' 200 100 0 200 400
SCALE IN FEET
EXISTING MHW (1.8' - APPROX.)
LEGEND
NOTES:
1. THE WIDTH OF THE BERM IS DEPENDENT UPON THE PROPORTIONAL QUANTITY OF SAND TO BE
PLACED AT THE TIME OF CONSTRUCTION. THE GOVERNMENT DETERMINATION OF THE CHANNEL
DREDGING PRISM AND BEACH PROFILE SURVEYS, ALONG WITH THE SLOPE OF THE MATERIAL
DURING PLACEMENT WILL BE THE BASIS FOR DETERMINING THE WIDTH OF THE BERM.
2. THE BERM SLOPE IS DEPENDENT UPON MATERIAL PROPERTIES AND WAVE ENVIRONMENT
DURING PLACEMENT.
3. THE EXISTING MHW LINE WAS INTERPOLATED FROM SURVEYS TAKEN APRIL 2024.
4. HORIZONTAL COORDINATES BASED ON NC STATE PLANE (NAD83).
VERTICAL CONTROL BASED ON NAVD88 DATUM.
5. PHOTO FROM ESRI/MAXAR: DATED MAY 2023 CN106
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.../Reference_Drawings/R-16.dgn 08/19/2004 04:05:48 PM
R-1
R-2
R-3
R-4
R-5
R-6
| GENERAL |
| G-001 - COVER SHEET |
| GI01 - INDEX OF DRAWINGS, PROJECT VICINITY MAP AND PROJECT SITE PLAN |
| CIVIL NAVIGATION |
| CN101 - SMITH ISLAND CHANNEL |
| CN102 - BALDHEAD SHOAL CHANNEL REACH 1 |
| CN103 - BALDHEAD SHOAL CHANNEL REACH 2 |
| CN104 - CASWELL BEACH PLACEMENT AREA STA. 0+00 TO STA. 30+00 AND STA. 69+90 TO STA. 106+00 |
| CN105 - CASWELL BEACH AND OAK ISLAND PLACEMENT AREA STA.106+00 TO STA. 219+00 |
| CN106 - OAK ISLAND PLACEMENT AREA STA. 219+00 TO STA. 254+00 |
| LOENO - BEACH PLACEMENT AREA TYPICAL SECTIONS |
| CN302 - BEACH FILL CROSS-SECTIONS STA. 5+00 TO STA. 30+00 AND STA. 70+00 TO STA.80+00 |
| CN303 - BEACH FILL CROSS-SECTIONS STA. 85+00 TO STA. 125+00 |
| CN304 - BEACH FILL CROSS-SECTIONS STA. 130+00 TO STA. 170+00 |
| CN305 - BEACH FILL CROSS-SECTIONS STA. 175+00 TO STA. 215+00 |
| CN306 - BEACH FILL CROSS-SECTIONS STA. 220+00 TO STA. 250+00 |
| REFERENCE DWGS |
| R-1 | C-1 CP&L BALD HEAD ISLAND FEEDER LOCATION - CABLE ROUTE - INDEX, NOTES & LEGEND |
| R-2 | C-4 CP&L BALD HEAD ISLAND FEEDER LOCATION - CABLE LOCATION - STA 57+00 TO STA 85+58 |
| R-3 | I-2 CFRC WATERLINE EXTENSION - CAPE FEAR RIVER - INDEX & NOTES |
| R-4 | C-3 CFRC WATERLINE EXTENSION - CAPE FEAR RIVER - STA 0+00 TO STA 28+00 |
| R-5 | C-4 CFRC WATERLINE EXTENSION - CAPE FEAR RIVER - STA 28+00 TO STA 57+00 |
| R-6 | C-5 CFRC WATERLINE EXTENSION - CAPE FEAR RIVER - STA 57+00 TO STA 85+58 |
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