APPROVED TRAFFIC CONTROL PLANBUFFER DATA
LONGITUDINAL BUFFER SPACE = B
SPEED (MPH)
25
30
35
40
45
50
55
60
65
70
LENGTH (feet)
155
200
250
305
360
425
495
570
645
730
TRANSPORTABLE ATTENUATOR ROLL AHEAD DISTANCE = R
HOST VEHICLE WEIGHT
9,900 TO 22,000 lbs.
HOST VEHICLE WEIGHT
> 22,000 lbs.
< 45 MPH
45-55 MPH
> 55 MPH
< 45 MPH
45-55 MPH
> 55 MPH
100,
123'
172'
74'
100'
150,
PROTECTIVE VEHICLE (WORK VEHICLE) = R
NO SPECIFIED DISTANCE REQUIRED
END OF
ROAD
WORK
SIGN
300'
�VONANI648"'
48"
48" W20-4 W20-7A
ROAD
WORK
AHEAD 48"
W20.1 W20-7B
W20.7B (OPTIONAL IF
40 MPH OR LESS)
OWNER/CONTRACTOR IS RESPONSIBLE FOR
EROSION CONTROL AND DRAINAGE
LEGEND
I� FLAGGING STATION
b TEMPORARY SIGN LOCATION Applicant shall repair/replace all
damage to utilities or frontage
D CHANNELIZING DEVICES improvements in City right-of-way
per city standards that is caused or
PROTECTIVE VEHICLE occurs during the permitted project.
OWNER/CONTRACTOR RESPONSIBLE FOR LOCATING
ALL ON SITE UTILITIES. RELOCATION/REVISION TO ANY
UTILITIES MAY REQUIRE A SEPERATE PERMIT.
SIGN SPACING = X (1)
RURAL HIGHWAYS 60 165 MPH
800't
RURAL ROADS 45/55 MPH
500'i
RURAL ROADS & URBAN ARTERIALS 35/40 MPH
350't
RURAL ROADS, URBAN ARTERIALS, 25 / 30 MPH
RESIDENTIAL & BUSINESS DISTRICTS
200't (2)
URBAN STREETS 25 MPH OR LESS
100'i (2)
(1) ALL SPACING MAY BE ADJUSTED TO ACCOMMODATE
INTERSECTIONS AND DRIVEWAYS.
(2) THIS SPACING MAY BE REDUCED IN URBAN AREAS TO FIT
ROADWAY CONDITIONS.
50' TO 100'
6 DEVICE
MI I R
O AREA
59TO 100'
6 DEVICE
n
I x
I •
I
3� x
rc � 4 W20-7A
zl
UI
yl x
�I
u ONE LANE
zl
I 4 ROAD
I AHEAD
I x
I
W20-4
I 4
I
I '
W20_713 (OPTIONAL IF
40 MPH OR LESS)
48" 48'
BE ROAD
PREPARED WORK
To STOP AHEAD
48" 48" 48" 48'
. W20.71111 ONE LANE W20.1
ROAD
AHEAD
48" 48"
W20-7A W20-4
Utility patches shall be combined and full width or half
width overlay will be required depending on the extent
of disturbance. Where utility patches fall entirely within
on travel lane, the overlay shall extend to the
centerline of roadway. Where utility patches extend into
both travel lanes then a full width overlay is required.
END OF
ROAD
WORK
SIGN
CHANNELIZATION DEVICE
SPACING (FEET)
MPH
TAPER
TANGENT
50/65
10 TO 20
80
35/45
10 TO 20
60
25/30
10 TO 20
40
BE
PREPARED
PRE
W2o-78 (OPTIONAL IF
40 MPH OR LESS)
48'
W20-7B
ENGINEERING DIVISION
APPROVED AS NOTED
48'*
ROAD
i 04I07/2023
WORK
NOTES
AHEAD
48•
1. ALL SIGNS ARE
BLACK ON ORANGE.
ONE -LANE, TWO-WAY TRAFFIC CONTROL
WITH FLAGGERS
NOT TO SCALE
2. EXTENDING THE CHANNELIZING DEVICE TAPER ACROSS
SHOULDER IS RECOMMENDED.
3. NIGHT WORK REQUIRES ADDITIONAL ROADWAY LIGHTING AT
FLAGGING STATIONS. SEE THE STANDARD SPECIFICATIONS
FOR ADDITIONAL DETAILS.
4. SEE SPECIAL PROVISIONS FOR WORK HOUR RESTRICTIONS.
Plot 1
TIME 3:05:14 PM
..Ts
"WAS
FED.AID PROJAO.
Amok—N
�
�I/
Washington State
Department of Transportation
xv
TC7�
DATE 1/212018
PLOTTED BY Ilddalf
DESIGNED BY
+oN xuNNeN
or
NNE
ENTERED BY
CHECKED BY
coxTNnm x"wnoN
No.
TRAFFIC CONTROL PLAN
PROJ. ENGR.
REGIONAL ADM.
REVISION
DATE
BY