Project Maps
N.C. 150 Widening Improvements
Project Fast Facts
  • Status: Projects Under Development
  • Counties: Catawba and Iredell
  • Project Type: Roadway Improvement (15 mile widening)
  • STIP Number: R-2307 and I-5717
  • Estimated Cost: $170,985,000 (subject to change)
N.C. 150 Widening Improvements


The North Carolina Department of Transportation proposes improving approximately 15 miles of N.C. 150 from the N.C. 16 Bypass in Catawba County to just west of the U.S. 21/N.C. 150 interchange in Mooresville in Iredell County.

NCDOT is also studying improvements to the nearby I-77 Interchange in conjunction with the N.C. 150 improvements.

These projects (R-2307 & I-5717) involve adding lanes, reconfiguring the I-77 interchange, rehabilitating/replacing several bridges and other roadway design improvements.

News and Updates

Recently completed activities on the N.C. 150 project include:

  • Public Meeting (November 2013)
  • Business Owners Meeting (February 2014)
  • Natural Resources Surveys (May-June 2014)
  • Bicycle and Pedestrian Meeting (July 2014)
  • Traffic Forecast Update (August 2014)
  • Draft Natural Resources Technical Report (August 2014)
  • Capacity Analysis
  • Functional Design
  • Finalize Natural Resource Technical Report (NRTR)
  • Finalize Traffic Forecast for I-77/ N.C. 150

Current activities on the N.C. 150 project include:

  • Agency coordination (ongoing)

STIP Project Addition and Proposed Project Revision

Improvements to the I-77 interchange are now identified in the State Transportation Improvement Program as Project I-5717.

NCDOT is studying the I-77 Interchange improvements in conjunction with the N.C. 150 improvements. A single environmental document will be prepared for both projects since the projects are adjacent and because it would be practical to develop the interchange modifications in coordination with the proposed N.C. 150 improvements.

Preparing a single document will also ensure a coordinated design along the N.C. 150 corridor from the N.C. 16 Bypass to just west of the U.S. 21/N.C. 150 interchange in Mooresville.

Project Overview and Purpose

The purpose and need for these projects is to improve capacity and reduce congestion along N.C. 150 from the N.C. 16 Bypass to just west of the U.S. 21/N.C. 150 interchange.

Between 2000 and 2010, the population in Iredell County grew at a rate much higher than the average rate for North Carolina, which was 18.5 percent. The average population growth rate in Iredell County grew at a rate of 30 percent while the more rural Catawba County grew at a rate of 8.9 percent.

Local planners identified the portions of Catawba and Iredell counties within the study area as areas of slower growth (NCDOT Community Characteristics Report 2012). However, as the City of Charlotte continues to grow in population and as employment opportunities expand, the study area will continue to see the growth in population.

A planning, environmental and engineering study is being conducted for the proposed project in accordance with the National Environmental Policy Act and the Federal Highway Administration’s Guidance for Preparing and Processing Environmental and Section 4(f) documents.

A Traffic Safety Analysis by the NCDOT Safety Planning Group in June 2011 concluded that the current crash rates exceed the statewide crash rates in the total non-fatal injury and wet categories and exceed critical crash rates in the total and non-fatal injury categories. The report concluded: "A divided facility with a raised median should potentially reduce frontal impact crashes along the corridor" and recommended that a driveway access review be conducted to determine if driveways can be closed or combined to reduce conflict points.

A Traffic Forecast was completed in September 2013 indicating that:

  • Present-day N.C. 150 traffic volumes exceeded two-lane capacity between Sherrill’s Ford Road and the I-77 Interchange commercial district
  • N.C. 150 traffic volumes west of Sherrill’s Ford Road are projected to exceed capacity between 2015 and 2020.
  • It is projected that the entire length of N.C. 150 will exceed two-lane capacity in 2035.

Project Highlights

Alternatives considered for the proposed improvements:

  • No-Build alternative (under review, as required by the National Environmental Policy Act).
  • Transportation Demand Management (TDM) alternative*
  • Transportation System Management (TSM) alternative *
  • Mass Transit Alternative*
  • Build alternatives: Improve Existing N.C. 150

* These alternatives do not meet the purpose and need, and were therefore were eliminated from further consideration for this project.

Proposed Build Alternatives for Detailed Study

The Improve Existing N.C. 150 alternative includes widening options and other improvements to existing N.C. 150 from the N.C. 16 Bypass to just west of the N.C. 150/ U.S. 21 interchange in Mooresville. This alternative addresses the capacity, geometric and structure deficiencies along this corridor and fulfills the Purpose and Need Statement which is to improve capacity and reduce congestion.

The Best Fit Alternative implements a combination of symmetrical and asymmetrical widening (i.e., widening more to one side or the other) and avoids and/or minimizes impacts to existing land uses to the greatest extent possible.

Because existing N.C. 150 passes through the Terrell Historic District, two new location bypass options were developed to avoid and/or minimize impacts to the district. The proposed bypass options are being studied in accordance with Section 4(f) regulations.

Current Schedule*

The current schedule is below. Because a number of factors can affect a project schedule, it is subject to change.

Environmental Assessment January 2016
Public Hearing April 2016
Finding of No Significant ImpactMarch 2017
Right of Way AcquisitionAugust/September 2017
LetAugust 2019

* Based on State Transportation Improvement Program September 2014 Schedule

Contact Information

Zahid Baloch, P.E.
Project Planning Engineer
1548 Mail Service Center,
Raleigh NC 27699-1548
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Gregory E. Brew, P.E.
Roadway Design Engineer
1582 Mail Service Center,
Raleigh NC 27699-1582
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Larry Carpenter Jr., P.E.
Division Construction Engineer
Highway Division 12
P O Box 47
Shelby, NC 28151-0047
1710 E. Marion St. (US 74 Business)
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Resources for Local Property Owners

In many cases, it is inevitable that a certain amount of private property must be acquired. The displacement of homes and businesses is minimized to the extent practicable. The following brochures will answer questions about this process.