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South Carolina Shoulder Closure Traffic Control Plan
A shoulder closure keeps every through lane open. You taper channelizing devices onto the shoulder, post advance warning, and nobody changes lanes. The numbers below are computed for South Carolina from MUTCD 11th Edition Part 6 — taper length, advance sign spacing, buffer, and device count at four posted speeds.
Real MUTCD dimensions, a title block, and a printable sheet — no account, no cost.
Build this plan free — takes about 2 minutesComputed MUTCD dimensions
Governing typical application: TA-3 — Work on the Shoulders. Assumptions: urban collector, 2 through lanes, 12 ft lanes, 8 ft lateral offset, 100 ft work space, short-term duration. Rule set MUTCD 11th Ed. + 50-state/DC adoption layer + ID/ACHD profiles, rule set 2026-08 rev 4.
| Posted speed | Taper length (shoulder) | Advance signs A / B / C | Longitudinal buffer | Device spacing taper / tangent | Channelizing devices |
|---|---|---|---|---|---|
| 25 mph | 30 ft | 100 ft / 100 ft / 100 ft | 155 ft | 25 ft / 50 ft | 15 |
| 35 mph | 55 ft | 250 ft / 250 ft / 250 ft | 250 ft | 35 ft / 70 ft | 13 |
| 45 mph | 120 ft | 350 ft / 350 ft / 350 ft | 360 ft | 45 ft / 90 ft | 15 |
| 55 mph | 150 ft | 350 ft / 350 ft / 350 ft | 495 ft | 55 ft / 110 ft | 14 |
What applies in South Carolina
- Agency rule set
- State of South Carolina (MUTCD as adopted)
- MUTCD adoption
- National MUTCD adopted as-is (single secondary source — unconfirmed)
Printed on every South Carolina sheet:
- South Carolina is recorded in this rule set as having adopted the National MUTCD, unconfirmed; national Part 6 requirements are applied on this sheet unless the local road authority has modified them. Confirm South Carolina’s adoption before submittal.
This rule set holds no South Carolina-specific permit form, review time, or closure-hour restriction, so none is shown. Those are set by whoever owns the road — state DOT, county, city, or highway district — and have to come from them.
Governing citation: South Carolina — MUTCD adoption recorded as: National MUTCD adopted as-is. Bucket taken from secondary compilations of 11th-Edition state MUTCD adoption current to mid-2026; FHWA’s own state adoption listing was unreachable from the build environment and has not been checked directly. Rests on a single secondary source and is UNCONFIRMED in this rule set. This rule set asserts no South Carolina-specific numeric requirement; adoption status best-effort — verify against FHWA’s state adoption listing (“MUTCD information by State”) and the state DOT before submittal.
Questions people actually ask
How long does a shoulder taper have to be in South Carolina?
MUTCD sets the shoulder taper at one third of the merging taper length for the same offset and posted speed. The table above shows the computed length at 25, 35, 45, and 55 mph for an 8 ft shoulder. Change the offset or the speed in the builder and the number recomputes.
Do I need a permit to close a shoulder?
Usually yes, and it depends entirely on who owns the road — state DOT, county, city, or a highway district. This tool records the agency information it can stand behind and says so where it cannot; it does not guess at a permit desk. Call the road authority for the segment you are working on.
Is a generated sheet good enough to submit?
It is a planning sheet, not an approved plan. It gives a reviewer real MUTCD dimensions and a governing typical application to check against, which is far better than a hand sketch — but a qualified person has to review it and adapt it to field conditions, and the permitting agency has the last word.
Real MUTCD dimensions, a title block, and a printable sheet — no account, no cost.
Build this plan free — takes about 2 minutesDISCLAIMER — READ BEFORE USE
This traffic control plan was generated by an automated tool for planning and reference purposes only. It is based on the MUTCD 11th Edition Part 6 typical applications and the agency rule set selected above. It is not a certified, sealed, or professionally engineered document and has not been reviewed against actual field conditions at this site. It must be reviewed, adapted to field conditions, and approved by a qualified person — and, where required, by the permitting agency and/or a licensed Professional Engineer — before use. Field conditions govern. The user is solely responsible for work-zone safety, for conformance with all applicable federal, state, and local requirements, and for obtaining all required permits. PM Axsus disclaims all liability arising from use of this document.