N.C. 12 Rodanthe Bridge - NCDOT
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N.C. 12 Rodanthe Bridge STIP Project No. B-2500B Project Update | March 5, 2020
Transcript of N.C. 12 Rodanthe Bridge - NCDOT
N.C. 12 Rodanthe Bridge
STIP Project No. B-2500BProject Update | March 5, 2020
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– 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
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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
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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.
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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
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What type of activity will be occurring adjacent to Pappy Lane?
Cranes and Crews are now beyond the Pappy Lane portion of the project
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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.”
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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.
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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
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Construction on the bridge is approximately 28% complete
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Expenditures as of February 22, 2020$76,776,068
Overall Contract Value $145,336,271
March 5, 2020
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33 of 108 Bents have been installed (121 of 348 piles)
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18 of 107 Deck Spans have been cast
March 5, 2020
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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
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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
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Bridge completion is currently projected for
Fall of 2021
2030 2060Thank you
Contact Information
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Pablo Hernandez
NCDOT Resident Engineer’s Office – Manteo
252-473-3637
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Next UpdateJune 4, 2020
6-8 p.m. Same Venue
