N.C. 12 Rodanthe Bridge

STIP Project No. B-2500BProject Update | March 5, 2020

2

– Introduction of NCDOT staff in attendance

– Review of past update meeting questions and responses

– Coastal Monitoring Program

– Project update

– Questions and comments for the panel

NCDOT Staff

4

Jerry JenningsDivision Engineer

NCDOT Highway Division 1

Pablo Hernandez, PEResident Engineer

NCDOT Highway Division 1

David Hering, PEDesign Build Project Engineer

NCDOT Design Build Unit

John Conforti, REMSenior Project Manager

NCDOT Project Management Unit

Diane WilsonSr. Public Involvement Officer

NCDOT Public Involvement, Community Studies and Visualization Unit

What we heard at the December 5, 2019

update meeting

5

Responses to Questions submitted at the October 9 meeting were presented.

Several questions were submitted at the December 5 meeting which were new.

Responses to those questions follow.

6

What is the status of claims for home damage as a result of construction?

A claims lead has been assignedClaims will be processed following the standard processing guidelines

____________________________________

What type of activity will be occurring adjacent to Pappy Lane?

Cranes and Crews are now beyond the Pappy Lane portion of the project

7

What was the final determination regarding the Pappy Lane Wreck site?

NCDOT developed a research proposal in March of 2017 in consultation with the State Historic Preservation Office (SHPO).

- All required field investigations for the Pappy Lane wreck were completed in October of 2017.

- The report of the investigations was completed in May of 2018 and approved by SHPO in June of 2018.

- The SHPO letter dated June 21, 2018 states: “We therefore recommend that NCDOT has fulfilled its commitment to mitigate for the loss of information in case the wreck is damaged during the B-2500B bridge construction and recommend no further archaeological work. We do encourage additional efforts be made toward public education and outreach concerning this interesting shipwreck.”

8

Pappy Lane Wreck site

Personnel of the Cultural Resources (Archaeology and Historic Architecture Groups) of NCDOT continue to work on the interpretive

displays associated with resources near the B-2500 project area including the Pappy Lane wreck.

A consultant’s initial draft of those displays is due early in 2020.

9

Coastal Monitoring Program to assess highway vulnerability between

Oregon Inlet and Rodanthe

Coastal Monitoring Program Goals

• Monitoring Pea Island to identify vulnerable areas now and in the future

• Planning for future phases of NC 12 Transportation Management Plan

• Meet requirements of 2012 US FWS Easement

Background

VA

NC

Source: M. Helminski photo March 1989

1989 Situation Critical for Bonner Bridge

Background

VA

NC

Source: Google Earth

1993 Photo

Terminal Groin Constructed, 1990-1991

Background

NCDOT Coastal Monitoring Program

• Initiated during construction of Oregon Inlet Terminal Groin, monitored approximately 6 miles south of inlet

• Expanded south to Rodanthein 2010

Data Sets

• Aerial Photography, color and near-infrared

• Digital Terrain Models

• Storm Information

• Maintenance Costs

• Sand Sampling

• Biological Monitoring

Photo: NCDOT

Program Elements: Data Collection

Methods

Program Elements: Data Analysis

• Ocean shoreline position

• Estuarine shoreline position

• Island width

• Beach width

• Dune elevation and position

• Habitat/Land Cover

• Volume of sand between N.C.12 edge of pavement and shoreline, above MHW

• Storm effects

• Erosion rate and road vulnerability

Methods

Morphological Vulnerability Indicators

Methods

How Vulnerability Indicators are Measured

Methods

Erosion Rates & Shoreline Forecasting

• Each year data is improved and refined, and erosion rates are recalculated

• These are used to make improved estimates of what the island shape will look like in the future (2030, 2060)

Methods

Habitat Mapping and Classification

Color infrared photos and digital topography are used to classify land cover and habitat in the Pea Island National Wildlife Refuge

Results

Habitat Change

Results

Composite Vulnerability

2018

Results

2030 Vulnerability

Total vulnerable27,310 ft

Results

2060 Vulnerability

Total vulnerable35,375 ft

Implications

Coastal Monitoring Program Implications

• Data and results used to inform transportation planning

• Identify vulnerable areas now and in the future

• Plan future phases of N.C. 12

March 5, 2020 Update

March 5, 2020

27

Construction on the bridge is approximately 28% complete

____________________________

Expenditures as of February 22, 2020$76,776,068

Overall Contract Value $145,336,271

March 5, 2020

28

33 of 108 Bents have been installed (121 of 348 piles)

____________________________

18 of 107 Deck Spans have been cast

March 5, 2020

29

On the north end of the project, erection of the work trestle and bridge construction is

well underway.

This work trestle will leapfrog to the south as bridge construction progresses from

north to south.

March 5, 2020

30

Earthwork & paving for the roundabout should resume in late March or early April.

Work Zone ‘One Lane Closures” will be needed for various operations during roundabout connection to

N.C. 12 and the adjacent side streets.

March 5, 2020

31

Bridge completion is currently projected for

Fall of 2021

2030 2060Thank you

Contact Information

33

Pablo Hernandez

NCDOT Resident Engineer’s Office – Manteo

252-473-3637

NC12-Rodanthe@publicinput.com

34

Next UpdateJune 4, 2020

6-8 p.m. Same Venue