Interstate 581 and Valley View Interchange Improvements
Project at a Glance
construction start early summer 2014
Est Completion Date
Lengths and Limits
From 0.24 mile south of Hershberger Rd to 1.561 miles south of Hershberger Rd.
What has been done?
The new diverging diamond interchange opened to traffic on November 21, 2016!
This project will complete the partial Interstate 581 interchange with Valley View Boulevard at exit 3C in the City of Roanoke. The partial interchange was constructed in 1999.
Work included building an off-ramp from southbound I-581 onto Valley View Boulevard and an on-ramp from Valley View Boulevard onto northbound I-581.
Other features of the project included:
- Building a continuous lane on southbound I-581 to connect the on-ramp at Hershberger Road to the new off-ramp at Valley View Boulevard
- Building a continuous through lane on northbound I-581 to connect the new on-ramp from Valley View Boulevard to the off-ramp at Hershberger Road
- Widening the bridge over I-581 to four lanes with turn lanes onto the I-581 on-ramps
- Realigning a portion of the Lick Run Greenway to the north of its current location
- Installing sound walls along portions of I-581
- Installing roadway lighting at the interchange and along the ramps
- Installing new signals for the intersection and ramp movements
- Replacing the signal at Valley View Crossing
- Repaving portions of Valley View Boulevard
Diverging Diamond Interchange Information
The project also includes a diverging diamond interchange which will improve the existing off-ramp from northbound I-581 onto Valley View Boulevard and the existing on-ramp from Valley View Boulevard onto southbound I-581. It is the second interchange of its kind in the state of Virginia.
The diverging diamond interchange concept at this location will reduce the right of way impacts, simplify traffic signal operations and reduce impacts to streams and utilities.
What's it like to drive through a diverging diamond interchange?
A DDI is unusual in that it requires motorists to briefly drive on the opposite side of the road from where they normally do. Drivers might think the new interchange difficult to navigate, but it has pavement markings and traffic signals just like a regular intersection.
When driving a DDI, motorists proceed through a traffic signal and simply follow their lane to the opposite side of the roadway. Then, drivers turning left can turn without having to cross a lane of oncoming traffic.
Watch our videos below to learn more about what it is like to drive through this new traffic pattern.
- Increasing safety and moving a higher volume of vehicles without increasing the number of lanes, this innovative interchange design crosses traffic to the left side of the road.
- The diverging diamond interchange originated in France and was listed by Popular Science magazine in 2009 as one of the best innovations in engineering.
In March 2013, VDOT awarded a design-build contract to The LANE Construction Corporation of Chantilly to complete final design, acquire right of way and construct the project.
Preliminary surveying and testing started in June 2013. Construction started in summer 2014. The project's anticipated completion date is fall 2016.
A public hearing was held in June 2011 at William Fleming High School to give citizens an opportunity to review and comment on the project information.
A citizen information meeting was held on December 10, 2013 at William Fleming High School.
Citizen information meeting materials:
Noise Barrier Walls
Noise barrier walls are being installed along the Valley View Boulevard corridor. Installation began in fall 2015.
What is a noise wall? It is a specially designed structure built to reduce noise levels created by nearby highway traffic. It is built only after noise impact studies are conducted and certain conditions are met.
For more information on noise barrier walls, visit our web page online.