Project Map
Regional Map

Project Plans (4.3mb)

Project Fast Facts
  • County: Iredell
  • Type of Project: Interstate Interchange Improvement
  • STIP Number: I-3819A, I-3819B (unfunded)
  • Estimated Cost: $89.07 million
  • Project Team: Zachry Construction Corp.
  • Start Date: 2012 (I-3819A)
  • Completion Date: March 14, 2017 (I-3819A)
Photos & Videos

Diverging Diamond Interchange Visualization Video

I-40/77 Interchange Flickr Gallery

I-40 and I-77 Interchange - Statesville

Project Overview and Purpose

The N.C. Department of Transportation is making improvements to the I-40/77 interchange in Statesville by widening I-40 from four to six lanes in each direction – from Old Mocksville Road to east of N.C. 115 – and building a multi-level interchange of the two interstates.

The interchange is a critical intersection in North Carolina. Built in the late 1960s, the current configuration has outlived its original purpose.

Work will help improve congestion as well as safety. Original projections of the interchange indicated a maximum of 5,000 vehicles per day. Today, the interchange sees more than 70,000 vehicles per day, and traffic is projected to grow to 110,000 vehicles per day by 2035.

Project Highlights

The project is divided into two sections for construction.

Construction on the first section – Old Mocksville Road to east of N.C. 115 – began in 2012. It involves widening I-40 to three lanes in each direction from Old Mocksville Road to east of N.C. 115 building a diverging diamond interchange at I-40/U.S.21 and reconstructing U.S. 21 from south of I-40 at BB&T Bank to north of Glenway Drive.

Other improvements include:

  • Building an I-40 westbound collector/distributor road, which serves to move traffic from local streets to high capacity roads
  • Replacing the bridge on Radio Road over I-40
  • Building a bridge on I-40 over U.S. 21 and Fourth Creek
  • Building a bridge from Sunset Hill Road to Gaither Road to connect U.S. 21 and Gaither Road, eliminating the two-way ramp at U.S.21/I-40
  • Building a ramp from westbound I-40 to northbound I-77
  • Building a ramp from northbound I-77 to eastbound I-40
  • Building parallel lanes on I-40 West that will allow vehicles to access U.S. 21, as well as accessing I-40 from U.S. 21 without disrupting the flow of traffic.
  • Building a ramp fly-under, which is the collector/distributor road to U.S. 21 (I-77 north to U.S. 21 and I-40 westbound, I-77 South to U.S. 21 & I-40 westbound and I-40 westbound to U.S. 21)
  • Closing I-40 Exit 153 (U.S. 64)
  • Upgrading I-40 Exit 154 (Old Mocksville Road) into a diamond interchange
  • Building noise walls along I-40

Construction for the second section is currently unfunded in the N.C. Department of Transportation's Strategic Transportation Improvement Program.

Lane Closures

During construction, various lanes will be closed as needed. However, all lanes on the following portions of the interchange will be open during the following times:

I-40 and I-77, including ramps

Monday through Friday from 6 a.m. to 8 p.m.
Saturday and Sunday from 8 a.m. to 9 p.m.

U.S. 21

Monday through Friday from 7 a.m. to 9 p.m.
Saturday and Sunday from 9 a.m. to 8 p.m.

U.S. 64 (Davie Avenue)

Monday through Friday from 7 a.m. to 7 p.m.

Glenway Drive

Monday through Friday from 7 a.m. to 9 p.m.
Saturday and Sunday from 8 a.m. to 9 p.m.

Travel lanes on I-40, I-77 and U.S. 21 will remain open during the following holidays and special events:

New Year's Day holiday from 6 a.m. Dec. 31 through 8 p.m. Jan. 2
Note: If Jan. 1 falls on Friday, Saturday, Sunday or Monday, lanes will remain
open until 8 p.m. the following Tuesday.

Easter weekend

6 a.m. Thursday until 8 p.m. the following Monday

Memorial Day weekend

6 a.m. Friday at 6 a.m. until 8 p.m. the following Tuesday

Independence Day holiday

6 a.m. on July 3 until 8 p.m. on July 5

Labor Day weekend

6 a.m. Friday until 8 p.m. the following Tuesday

Thanksgiving weekend

6 a.m. Tuesday until 8 p.m. the following Monday

Christmas holiday

6 a.m. of the Friday before the week of Christmas Day until 8 p.m. the following Tuesday after the week of Christmas Day

NASCAR race events at Charlotte Motor Speedway

6 a.m. the day before the event until 8 p.m. on the day after the event ends

Noise and Retaining Walls

Noise and retaining walls will be built in the following locations:

I-40 Westbound

From just west of Radio Road across from Western Avenue Baptist Church to where Museum Road moves away from I-40.

I-40 Eastbound

From the east side of Radio Road, extending to the down ramp at U.S. 21 behind the highway patrol station.
From just west of the Horse Shoe Pits to Radio Road.

I-77 Southbound

From south of Davie Avenue (U.S. 64), extending south up the ramp to Broad Street.
From the creek just south of Broad Street, south to Camden Drive, behind St. Philip the Apostle Catholic Church.

Any time there is a change in surroundings, noise changes. A new or expanded road will change the noise level due to increased traffic. NCDOT seeks to reduce predicted noise increases for nearby residents. (Learn more about this process.)

Project News Releases

Project Timeline

Milestone Dates*
Old Mocksville Road to east of N.C. 115 construction begins 2012
Old Mocksville Road to east of N.C. 115 construction complete July 2017

* Future dates are preliminary and subject to change

Project Documents

Contact Information

Mark Taylor, P.E.
Division 12 Resident Engineer
(704) 534-3542
Send a message

Resources for Local Property Owners

Although the N.C. Department of Transportation works to minimize the number of homes and businesses displaced by a road project, it is inevitable, in many cases, that a certain amount of private property is needed. The following information explains right of way acquisition and answers questions about the process.