Shoulder Work
Shoulder work keeps the through lanes open but still requires warning and separation, because traffic passes close to the work. This guide covers the compliance considerations specific to shoulder operations.
Last reviewed: June 24, 2026
What It Is
Shoulder work occupies the roadway shoulder for work or staging. Even though the travel lanes may stay open, advance warning and channelizing devices are still used to separate and warn traffic.
Key Compliance Considerations
- Open through lanes do not remove the need for warning and separation.
- Traffic passes close to the work, so the buffer and devices still matter.
- A shoulder closure can become a lane encroachment if work or devices extend into a lane.
Planning Focus
- Confirm the approved plan treats the shoulder work with appropriate warning and separation.
- Confirm whether the operation may encroach into a travel lane and plan for it.
- Confirm device and buffer requirements from the standard and approved plan.
Field Focus
- Place advance warning even though the through lanes remain open.
- Separate the work from traffic with the devices the plan requires.
- Keep work and devices within the shoulder unless a lane closure is approved.
Common Failures for This Operation
- Treating shoulder work as needing no warning because lanes stay open.
- Letting work or devices drift into a travel lane without an approved closure.
- Inadequate separation between traffic and the shoulder work.