NCDOT Projects
NCDOT Bridge/Culvert Replacement Projects
Since 1991, Sungate has successfully delivered more than 500 bridge/culvert replacement projects for NCDOT across every Division in North Carolina. Our experience spans rural stream crossings, major river structures, and bridges/culverts located in environmentally sensitive and highly developed corridors. We provide comprehensive engineering and roadway design services from project development through final construction plans, helping NCDOT navigate the technical, environmental, and regulatory challenges associated with bridge/culvert replacement projects.
Our bridge/culvert replacement services include Bridge/Culvert Survey Reports for proposed replacement and detour structures, roadway geometric design, hydraulic and scour analyses, drainage design, FEMA coordination, sediment and erosion control plans, environmental permitting, utility coordination, maintenance of traffic and detour planning, signing and pavement marking design, and complete construction plan development. By integrating these disciplines into a coordinated design approach, and partnering with key technical subconsultants, Sungate delivers safe, resilient, and cost-effective transportation solutions that improve mobility and connectivity throughout North Carolina.
The projects highlighted below represent only a small sample of the hundreds of successful bridge replacement projects Sungate has completed since 1991.
BP1.R014 – Replacement of Bridge No. 18 over Second Creek on SR 1105
The replacement structure consists of a single span cored slab bridge (1 @ 70’).
BP1.R024/R025 – Replacement of Bridges No. 18 and 65 over Eason Swamp on SR 1246
The replacement structures consists of single span cored slab bridges (both 1 @ 45’).
BP1.R026 – Replacement of Bridge No. 17 over Conaby Creek on SR 1114
The replacement structure consists of a single span cored slab bridge (1 @ 70’).
BR-0172 – Replacement of Bridge No. 43 over Trent Creek on NC 55
The replacement structure consists of a single span box beam bridge (1 @ 90’)
BP3-R007 – Replacement of Bridge No. 144 over Panther Creek on SR 1704
The replacement structure consists of a 2-span cored slab bridge (2 @ 45’)
B-5626 – Replacement of Bridge No. 31 over Sandy Run Swamp on NC 50
The replacement structure consists of a 3-span cored slab bridge (1 @ 45’, 1 @ 40’, 1 @ 50’).
B-5639 – Replacement of Bridge No. 36 over Maxwell Creek on NC 11
The replacement structure consists of a 3-span cored slab bridge (1 @ 55’, 1 @ 60’, 1 @ 55’).
B-5652 – Replacement of Bridge No. 33 over Wolf Swamp on US 17
The replacement structure consists of a 1-span prestressed concrete girder bridge (1 @ 100’).
NCDOT Conventional Roadway Design Projects
Sungate provides roadway design services for a variety of NCDOT transportation projects, including roadway widenings, new location roadways, modernization projects, intersection improvements, and corridor enhancements. Our team develops practical, cost-effective solutions that improve safety, mobility, and connectivity while addressing environmental, utility, and right-of-way constraints. Services include survey, roadway geometric design, drainage design, hydraulic analyses, traffic control plans, signing and pavement marking design, erosion and sediment control plans, permitting, utility design, and construction plan development.
The conventional roadway design projects highlighted below represent a selection of recent projects that Sungate has successfully completed or is currently delivering for our clients.
U-6206 – SR 1713 (Millers Chapel Road) Widening
The project involves widening approximately 1.2 miles of SR 1713 (Millers Chapel Road) from US 70 to SR 1712 (Thoroughfare Road) in Goldsboro, converting the existing two-lane roadway to a three-lane section.
HS-2401H – US 17 Business Reduced Conflict Intersections
The project improves corridor safety through the implementation of Reduced Conflict Intersections (RCIs) at strategic locations along US 17 Business in Martin County, extending from the westbound ramps at US 13/US 64 approximately 0.75 miles northward to just south of Courtney Lane.
R-5909 – SR 1605 (East Main Street) Widening and Modernization
The project involves widening and modernizing approximately 1.2 miles of SR 1605 (East Main Street) from US 601 to SR 1765 (Unifi Industrial Road) in Yadkinville, converting the existing two-lane roadway to a three-lane curb and gutter section and adding sidewalks along both sides of the corridor.
NCDOT Interchange Design Projects
Sungate has extensive experience delivering hydraulic and drainage solutions for interchange projects that enhance roadway resilience, improve stormwater management, and support safe, efficient transportation systems. Our team provides drainage design, hydraulic and hydrologic analyses, stormwater conveyance design, culvert and storm sewer design, erosion and sediment control plans, permitting support, and construction plan development for projects ranging from conventional interchanges to complex interchange reconstructions and modifications.
The interchange projects highlighted below represent a selection of recent projects in which Sungate has successfully provided hydraulic engineering, drainage design, and stormwater management solutions for our clients.
R-3300B – US 17 Hamstead Bypass
Sungate provided hydraulic design for the 5.6-mile US 17 Hampstead Bypass project extending from south of NC 210 to north of SR 1563 (Sloop Point Loop Road) in Pender County. Services included drainage design for approximately 7 miles of roadway, preparation of eight Culvert Survey Reports (CSRs), NCFMP/FEMA coordination, Stormwater Management Plan development, environmental permit drawings and impact summaries, and stormwater control measure (SCM) design and analysis.
R-2707C, D, & E – US 74 Shelby Bypass
Sungate provided hydraulic design, sediment and erosion control design, and environmental permit drawings for three segments of the US 74 Shelby Bypass project in NCDOT Division 12. The project encompassed approximately 11.5 miles of new location interstate extending from east of NC 226 to west of SR 1001.
I-5986A & B (I-5877, I-5878, and I-5883) – I-95 Widening
Sungate provided hydraulic design, sediment and erosion control plans, FEMA coordination, and environmental permitting for the I-5877, I-5878, I-5883, and I-5986B projects. These projects included the reconstruction of six interchanges and the widening of approximately 10 miles of I-95. Sungate also prepared the Hydraulic Planning Report for the adjacent I-5986A project.
NCDOT Design-Build Projects
Sungate has been a valued partner on numerous Design-Build teams across North Carolina, providing responsive hydraulic engineering and drainage design services that support aggressive schedules and project delivery goals. Our experience includes hydrologic and hydraulic analyses, stormwater management and drainage design, culvert and storm sewer systems, bridge hydraulic evaluations, erosion and sediment control, permitting, and construction support. We understand the collaborative nature of Design-Build delivery and work closely with contractors and project stakeholders to develop practical, cost-effective, and resilient hydraulic solutions that meet project requirements while minimizing risk and construction impacts.
The Design-Build projects highlighted below represent a selection of recent projects in which Sungate has successfully delivered hydraulic engineering, drainage design, and stormwater management services for our clients.
U-2925 – Research Parkway
This $68.9 Million Design/Build Project consisted of a 1.1-mile new location four-lane median-divided roadway from MLK, Jr. Drive, south of Winston-Salem State University, to Rams Drive at the Piedmont Triad Research Park. The project also included adding a diverging diamond interchange with US 52. As a part of the Blythe Design Build team, Sungate provided hydraulic design, sediment and erosion control design, and environmental permits.
U-5713/R-5777A&B/R-5777C – US 70 Widening
Sungate provided hydraulic design, sediment and erosion control plans, FEMA coordination, and environmental permit drawings for two projects along approximately 11.6 miles of US 70 in Craven County, extending from west of Williams Road to east of Carolina Pines Boulevard. The projects converted an existing four-lane divided highway into a controlled-access freeway through the replacement of multiple at-grade intersections with grade-separated interchanges. Services included extensive hydrologic and hydraulic modeling to support railroad permitting requirements, which mandated no increase in 100-year storm event discharges at railroad right-of-way. Multiple detention basins were incorporated into the design to mitigate runoff associated with increased impervious surfaces.
HB-0011 – Replacement of Bridge No. 26 over Gum Swamp Run on SR 1928
The replacement structure consists of 2-span cored slab bridge (2 @ 55’).
HB-0012 – Replacement of Bridge No. 32 over Overflow for Waccamaw River on SR 1928
The replacement structure consists of a single span cored slab bridge (1 @ 55’).
HB-0013 – Replacement of Pipes #24-2270 over Overflow for Waccamaw River on SR 1928
The replacement structure consists of a 4-span cored slab bridge (4 @ 50’).
Division 13 (Group 2) Hurricane Helene Emergency Design-Build –
Replace Bridge 119 on US 221 over North Fork Catawba River
Replace Bridge 285 on SR 1571 over North Fork Catawba River
Division 13 (Group 11) Hurricane Helene Emergency Design-Build –
Replace Bridge 139 on SR 2171 over North Fork Ivy Creek
Replace Bridge 147 on SR 2173 over Dillingham Creek
Replace Bridges 175 and 200 on NC 197 over North Fork Ivy Creek
NCDOT GESC Review Services
Sungate provides review services for NCDOT’s Central Hydraulics Unit and Divisions across North Carolina, serving as an extension of Department staff to support project development and delivery. Our team reviews roadway design plans, drainage designs, hydraulic and hydrologic analyses, Culvert Survey Reports (CSRs), Bridge Survey Reports (BSRs), floodplain compliance documentation, and erosion and sediment control plans to ensure compliance with NCDOT standards and regulatory requirements.
In addition to design reviews, Sungate performs Plans, Specifications, and Estimates (PS&E) reviews for NCDOT Division 5 and currently maintains active General Engineering Services Contracts (GESCs) in Central Hydraulics and Divisions 5, 6, 7, and 12. Through these assignments, Sungate helps maintain project quality, consistency, and constructability while supporting efficient project delivery throughout the state.
