H_2022 Wallops Island Underwater Inspection Report_Final.pdf

Underwater Inspection of

Wallops Island Causeway Bridge Over Cat Creek

Goddard Space Flight Center Wallops Flight Facility

August 2022

Report Prepared For:

Federal Highway Administration Eastern Federal Lands Highway Division Bridge Inspection and Management Program 22001 Loudoun County Parkway Building E2, Suite 300 Ashburn, VA 20147

Report Prepared by:

Marine Solutions, Inc.

23 Fontana Lane, Suite 102 Rosedale, MD 21237

UNDERWATER INSPECTION REPORT

Structure: Wallops Island Causeway Bridge Date Inspected: August 30 & 31, 2022

TABLE OF CONTENTS

General Photos ......................................................................................................................... 3-14

Commentary ............................................................................................................................ 15-18

Overview

Structure Description

Structure Orientation

Structure Access and Inspection ........................................................................................................... 15-16

Summary of Findings ............................................................................................................................. 16-17

Recommendations

NBI Condition Bridge Rating Form

Appendix A – Inspection Sketches .................................................................................................... A1-20

Appendix B – Deficiency Photos .......................................................................................................... B1-5

General Photos

NORTH (DOWNSTREAM) BRIDGE ELEVATION

SOUTH (UPSTREAM) BRIDGE ELEVATION

CHANNEL LOOKING NORTH (DOWNSTREAM)

CHANNEL LOOKING SOUTH (UPSTREAM)

PIER #1 – EAST ELEVATION

PIER #2 – EAST ELEVATION

PIER #3 – WEST ELEVATION

PIER #4 – WEST ELEVATION

PIER #5 – EAST ELEVATION

PIER #6 – WEST ELEVATION

PIER #7 – WEST ELEVATION

PIER #8 – WEST ELEVATION

PIER #9 – WEST ELEVATION

PIER #10 & WEST FENDER – EAST ELEVATION

PIER #11 & EAST FENDER – WEST ELEVATION

PIER #12 – EAST ELEVATION

PIER #13 – EAST ELEVATION

PIER #14 – WEST ELEVATION

PIER #15 – EAST ELEVATION

PIER #16 – EAST ELEVATION

PIER #17 – EAST ELEVATION

PIER #18 – EAST ELEVATION

PIER #19 – WEST ELEVATION

PIER #20 – WEST ELEVATION

COMMENTARY

OVERVIEW:

Marine Solutions, Inc. (Marine Solutions), was contracted by Clark Nexsen, Inc. to perform an underwater inspection of the Wallops Island Causeway Bridge over Cat Creek at the Goddard Space Flight Center, Wallops Flight Facility at the request of the Federal Highway Administration, Eastern Federal Lands Highway Division, Bridge Inspection and Management Program.

The Wallops Flight Facility is located in Accomack County, Virginia on the Delmarva Peninsula. The Flight Facility is owned by the National Aeronautics and Space Administration (NASA).

The purpose of this inspection was to identify and document all areas of deterioration on the submerged substructure units at and below the high waterline. Then, after determining the range and magnitude of deterioration, provide recommendations and costs to extend the useful life of the structure at its current level of operations.

The underwater inspection was conducted Tuesday, August 30, 2022, and Wednesday, August 31, 2022. The inspection team included Kyle A. Morrow, P.E. (Team Leader/Inspection Diver), Jeffery L. Brown II, NICET I (Inspection Diver/Dive Supervisor) and Isaiah Douglas (Commercial Diver/Tender).

STRUCTURE DESCRIPTION:

Wallops Island Causeway Bridge is a twenty-one span bridge, consisting of twenty 60' long spans and one 83'-6" long span totaling 1283'-6" long. Each typical 60' long span is constructed of a cast-in-place concrete deck supported by four prestressed concrete beams on concrete piers. The 83'-6" span (Span 11) is of similar construction, but has five beams.

The bridge provides the only access to NASA's island facility. There is a weight limit sign near the security gate at the west approach that restricts the weight of unpermitted vehicles crossing the bridge onto the island.

The substructure consists of 20 piers and two concrete abutments. Each pier consists of two 54" diameter prestressed concrete piles and a reinforced concrete pile cap. There are 6'-0" long epoxy filled fiberglass jackets located at most piles approximately 1'-6" above the waterline. A fender system is present on both sides of the channel (Piers 10 and 11) consisting of galvanized H-piles and horizontal timber walers. A timber pile dolphin is located at all for corners of the main channel. All 20 bridge piers were in the water at the time of the inspection. Both abutments were dry, and were not included in the underwater inspection.

STRUCTURE ORIENTATION:

Wallops Island Causeway Bridge is oriented on an east-west alignment with Abutment A at the west end and Abutment B at the east end. Spans 1-21 and Piers 1-20 are numbered from Abutment A. Cat Creek is tidal with ebb flow to the North. There is a navigable channel below Span 11.

STRUCTURE ACCESS AND INSPECTION:

A dive team consisting of commercially trained divers, led by a Virginia-registered Professional Engineer, conducted the underwater inspection. Diving operations were conducted from a 28' aluminum dive vessel utilizing commercial surface-supplied air diving techniques with constant communication between the inspection diver and note taker. Access to the bridge was obtained via the dive vessel launched at a boat ramp located on Chincoteague Island.

The underwater inspection consisted of a Level I visual inspection of 100 percent of the accessible substructure surfaces from the high water mark to the channel bottom. A Level II visual/tactile inspection, which included removing marine growth at the waterline, mid-depth and channel bottom, was performed on 10% of the surface area, at various locations, to facilitate an evaluation of the underlying surfaces and provide an overall condition of the structure. Particular attention was given to observed areas of excessive deterioration or apparent distress, and the condition of previous repairs was noted.

A cursory assessment of the waterway and channel bottom conditions in the vicinity of the bridge was also performed. The type of channel bottom material was noted, as well as the location and extent of observed scour.

The waterline was located approximately 1.2' below the top of the fiberglass jackets at Pier 10. This corresponds to a reading of 3.5' on the staff gage located on the East Fender System. In addition, a datum of 36.2' was measured from the bottom of the pile cap at Pier 10 to the waterline for future comparison.

SUMMARY OF FINDINGS:

Below is a summary of the findings of the underwater inspection. Detailed findings are contained in the underwater inspection sketches located in Appendix A. Photos for specific deficiencies are located in Appendix B.

SUBSTRUCTURE

Overall, the submerged portions of the substructure are in fair condition (NBI Condition Rating = 5). All surfaces below the waterline exhibit marine growth consisting of oyster shells up to 3" thick. See below for additional comments relating to the substructure.

Cylinder Piles:

The piles are in fair condition overall. Below the waterline, the piles exhibited random areas of honeycombing up to 1" diameter x 1/2" deep (see Photo 1).

The piles at Piers 3 through 19 have 6'-0" long epoxy filled fiberglass jackets at the waterline. The jackets are in good condition with random, isolated delaminated areas (see Photo 2). The top epoxy bevel of the jackets typically exhibits hairline cracking. The lower 6" to 1'-0" of the jackets at Piers 9 through 11 are delaminated.

Pier 10 – The South Pile exhibits three vertical hairline cracks on the southwest face: 8'-0" long approximately 1'-7" above the jacket, 6'-0" long at the top of the jacket, and 2'-0" long at the top of the jacket. Adjacent to the cracks on the south face, there is a 3'-0" high x 3'-0" wide epoxy patch above the jacket with delamination and edge spalling up to 1/2" deep (see Photo 3).

CHANNEL

The channel is in good condition (NBI Condition Rating = 8). When compared to the previous 2018 Underwater Inspection, the current streambed exhibits no significant change. This comparison is limited to the soundings obtained around the substructure units and are shown on the underwater inspection sketches located in Appendix A. No noteworthy deficiencies pertaining to the channel or channel protection were observed during the inspection. See below for additional comments relating to the fender system.

Fender System:

The submerged elements of the fender system are in satisfactory condition. The H-piles, access ladders, and hardware exhibit 75% to 100% loss of the galvanized coating at and below the high waterline. From the high waterline to 5'-0" below the high waterline, the underlying exposed steel typically exhibits moderate to heavy corrosion with 10% to 15% section loss (see Photos 4 and 5). Isolated piles exhibit 25% to 30% section loss in the tidal zone. Below this area, the underlying exposed steel exhibits 100% coating loss and moderate corrosion with up to 5% section loss (see Photo 6). The horizontal timber walers exhibit external rot with typical 3/4" pick penetrations (see Photo 7). The lower two walers are typically submerged, and exhibit isolated areas of heavy rot up to 6" diameter x 2" to 4" deep at the end grains and around the hardware connection to the piles. The lower three walers are located at and below the splash zone, and the associated hardware exhibits heavy corrosion with up to 25% section loss (see Photo 8).

The timber pile dolphins are in satisfactory condition. The piles typically exhibit minor to moderate delamination and external rot in the tidal zone with pick penetrations up to 3/4" deep. All piles have 1/16" to 1/4" wide checking throughout. The lower steel cables confining the timber dolphin piles exhibit heavy corrosion with 25% to 30% section loss. The North Pile at the Northwest Dolphin exhibits a 5'-0" high x 8" wide x 2" deep shake at the waterline with associated rot up to 1" deep (see Photo 9). The South Pile at the Southeast Dolphin exhibits up to 40% section loss from 1'-6" to 3'-6" below the high waterline (see Photo 10).

A few adjacent piles exhibit up to 25% section loss.

RECOMENDATIONS:

This structure is scheduled to be replaced by June 2026. Based on the condition of the structure, and the future structure replacement date, no underwater repairs are required at this time.

MPUTALLAZ

Text Box

RECOMMENDATIONS:

UNDERWATER INSPECTION

NBI CONDITION BRIDGE RATING FORM

BRIDGE NO: Wallops Island Causeway Bridge

PRINCIPAL ROUTE: VA-803

WATERWAY: Cat Creek

BRIDGE OWNER: NASA

INSPECTORS: Kyle Morrow, PE; Jeffery Brown II, NICET IV; Isaiah Douglas

INSPECTION DATES: August 30-31, 2022

NBI ITEM CONDITION RATING

60 – SUBSTRUCTURE 5

61 – CHANNEL AND CHANNEL PROTECTION 8

92B – CRITICAL FEATURES INSPECTION Y60

Underwater Inspection Frequency

113 – SCOUR CRITICAL RATING 6

Scour calculation/evaluation not included in this report

Ratings are based on the information provided in the “Recording and Coding Guide for the Structure Inventory and Appraisal of the Nation’s Bridges”, December, 1995.

Appendix A

N S NS

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

CONCRETE PILE CAP (TYP.)

EBB

FLOOD

FLOOD

EBB

WEST ELEVATION EAST ELEVATION

WATERLINE

1.

9' 1.

6'

1.

5' 2.

3'

MUDLINE MUDLINE

PIER 1

ELEVATIONS

JLB, KAM

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 1

K. MORROW, P.E.

NOT TO SCALE

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-1

CONCRETE PILE CAP (TYP.)

WEST ELEVATION EAST ELEVATION

WATERLINE

1.

8' 2.

4'

2.

3'

2.

6'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

PIER 2

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 2

NOT TO SCALE

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

A-2

JLB, KAM K. MORROW, P.E.

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

WEST ELEVATION EAST ELEVATION

WATERLINE EPOXY-FILLED

FIBERGLASS

JACKET

2.

2'

2.

2'

2.

0'

2.

1'

MUDLINE MUDLINE

1.

2'

(T

YP

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

PIER 3

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 3

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-3

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

5' 2.

3'

2.

1' 2.

3'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

2'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 4

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 4

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-4

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

3'

2.

4' 2.

2'

2.

3'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

2'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 5

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 5

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-5

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

6'

2.

1' 1.

9'

2.

1'MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

2'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 6

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 6

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-6

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

3'

1.

8'

1.

8'

1.

8'MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

2'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 7

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 7

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-7

WATERLINE

1.

7' 1.

6'

1.

6'

1.

2'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

3'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 8

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 8

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-8

WEST ELEVATION EAST ELEVATION

2 (TYP.)

WATERLINE

.3

.2

.7

.5

MUDLINE MUDLINE

1.

2'

(T

YP

6.

0'

(T

YP

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

EPOXY-FILLED

FIBERGLASS

JACKET

1 (TYP.)

PIER 9

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 9

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

1 LOWER 1'-0" OF JACKET IS DELAMINATED.

2 RANDOM HONEYCOMBING ON PILE UP TO 1" DIAMETER x 1/2" DEEP ON CONCRETE SURFACES BELOW JACKET.

A-9

WEST ELEVATION EAST ELEVATION

2 (TYP.)

WATERLINE

.5

.0

.8

.6

MUDLINE MUDLINE

EPOXY-FILLED

FIBERGLASS

JACKET (TYP.)

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

2'

(T

YP

.2

' D

AT

U M

PIER 10

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 10

NOT TO SCALE

NOTE: FENDER SYSTEM NOT SHOWN.

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

1 LOWER 1'-0" OF JACKET IS DELAMINATED.

2 RANDOM HONEYCOMBING ON PILE UP TO 1" DIAMETER x 1/2" DEEP ON CONCRETE SURFACES BELOW JACKET.

3 SOUTH PILE, SOUTHWEST FACE - 8'-0" LONG HAIRLINE VERTICAL CRACK APPROXIMATELY 1'-7" ABOVE TOP OF JACKET.

4 SOUTH PILE, SOUTHWEST FACE - 6'-0" LONG HAIRLINE VERTICAL CRACK AT TOP OF JACKET.

5 SOUTH PILE, SOUTHWEST FACE - 2'-0" LONG HAIRLINE VERTICAL CRACK AT TOP OF JACKET.

6 SOUTH PILE, SOUTH FACE - 3'-0" HIGH x 3'-0" WIDE EPOXY PATCH AT TOP OF JACKET WITH DELAMINATION AND

EDGE SPALLING UP TO 1/2" DEEP.

A-10

WEST ELEVATION EAST ELEVATION

2 (TYP.)

WATERLINE

.9

.5

.2

.9

MUDLINE MUDLINE

2 (TYP.)

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

7'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 11

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 11

NOT TO SCALE

NOTE: FENDER SYSTEM NOT SHOWN.

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

1 LOWER 4" TO 6" OF JACKET IS DELAMINATED.

2 RANDOM HONEYCOMBING UP TO 1" DIAMETER x 1/2" DEEP ON CONCRETE SURFACES BELOW JACKET.

A-11

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

0'

3.

5'

3.

1'

1.

6'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

7'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 12

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 12

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-12

WEST ELEVATION EAST ELEVATION

WATERLINE

1.

3'

2.

0'

1.

9' 1.

4'MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

9'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 13

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 13

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-13

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

3'

2.

2' 2.

2'

2.

3'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

7'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 14

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 14

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-14

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

3'

2.

5' 2.

6' 2.

3'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

7'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 15

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 15

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-15

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

6'

2.

6'

2.

7' 2.

4'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

5'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 16

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 16

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-16

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

8'

2.

1' 2.

3'

2.

5'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

5'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 17

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 17

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-17

WEST ELEVATION EAST ELEVATION

WATERLINE

2.

8'

2.

8' 2.

5'

2.

7'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

5'

(T

YP

EPOXY-FILLED

FIBERGLASS

JACKET

PIER 18

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 18

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-18

WEST ELEVATION EAST ELEVATION

WATERLINE

EPOXY-FILLED

FIBERGLASS

JACKET (TYP.)

2.

6'

2.

5'

2.

5'

2.

5'

MUDLINE

MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

1.

5'

(T

YP

PIER 19

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 19

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-19

WEST ELEVATION EAST ELEVATION

WATERLINE

1.

5'

1.

4'

1.

8' 1.

1'

MUDLINE MUDLINE

54"Ø PRE-STRESSED

CONCRETE CYLINDER

PILE (TYP.)

EBB

FLOOD

FLOOD

EBB

PIER 20

ELEVATIONS

8/30/22 & 8/31/22

STRUCTURE NO. BRP-1154

WALLOPS ISLAND CAUSEWAY BRIDGE

PIER 20

NOT TO SCALE

ARINEM

SOLUTIONS

REMARKS:

INSPECTION DIVER(S):

INSPECTION DATE(S):

ENGINEER:

SCALE:

NO NOTABLE DEFECTS FOUND DURING INSPECTION.

TYPICAL PILES - HEAVY MARINE GROWTH CONSISTING OF OYSTER SHELLS UP TO 3" THICK BELOW WATERLINE.

A-20

Appendix B

Appendix B – Deficiency Photos

B-1

Photo 1

Pier 10, South Pile – Typical Honeycombing Below Jacket (underwater)

Photo 2

Pier 7, South Pile – Typical Jacket at Waterline.

B-2

Photo 3

Pier 10, South Pile, South Face – Epoxy Patch with Delamination and Edge Spalling.

Photo 4

West Fender, H-Pile – Typical Corrosion in the Splash Zone

B-3

Photo 5

West Fender, H-Pile – Typical Corrosion in the Tidal Zone (Underwater).

Photo 6

West Fender, H-Pile – Typical Corrosion Near Mudline (Underwater).

B-4

Photo 7

West Fender – Typical Condition of Horizontal Walers

Photo 8

West Fender – Typical Condition of Hardware in Splash Zone

B-5

Photo 9

Northwest Dolphin, North Pile – Shake at the Waterline.

Photo 10

Southeast Dolphin, South Pile – Section Loss Near the Waterline.