Shoulder Work with Minor Encroachment
Work encroaches slightly into the travel lane; traffic shifts, remaining lane 10 ft minimum.
MUTCD Figure 6P-6
Posted speed limit, off-peak 85th-percentile speed prior to work starting, or anticipated operating speed.
How far traffic is moved sideways — usually the width of the closed lane.
Plan view
775 ft, to scaleRedrawn from MUTCD 11th Edition Chapter 6P, which is public domain. Devices are shown at the MUTCD spacing for 35 mph; signs are drawn oversize for legibility.
Computed for your conditions
MUTCD 11th Edshifting taper
at least 0.5 L
125 ft
Base L
Table 6B-4
245 ft
Device spacing in taper
1 × speed, Section 6K.01
35 ft
Device spacing on tangent
2 × speed, Section 6K.01
70 ft
Advance warning area
Table 6B-1
300 ft
Longitudinal buffer
Table 6B-2
250 ft
Total zone length
975 ft
Sign schedule
Tables 6G-1, 6H-1G20-2 — END ROAD WORK
36" × 18" minimum
1
W20-1 — ROAD WORK AHEAD
36" × 36" minimum
1
Device takeoff
Chapter 6KTraffic cone
shifting taper: 126 ft at 35 ft max spacing; Encroachment channelization: 450 ft at 70 ft max spacing
11
Shadow vehicle with TMA
Placed individually
1
Notes from the MUTCD figure
- Guidance: all lanes should be a minimum of 10 feet in width as measured to the near face of the channelizing devices.
- Guidance: this treatment should be used on a minor road having low speeds. For higher-speed conditions, use a lane closure.
- Option: for short-term use on low-volume, low-speed roadways without longer and wider heavy commercial vehicles, a minimum lane width of 9 feet may be used.
- Option: the shadow vehicle may be omitted if a taper and channelizing devices are used.
Notes paraphrase the MUTCD figure's own Notes block, preserving the manual's Standard / Guidance / Option force. Read the figure itself before you submit.