SN01 STANDARD NOTES CITY OF SAMMAMISH 2018 INTERSECTION IMPROVEMENTS PROJECT NO. DATE BY APPR REVISION COSA0023 KING COUNTY WASHINGTON
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2 STANDARD NOTES SN01 2 OF 17
3 STANDARD NOTES SN02 3 OF 17
4 SITE PREP & T.E.S.C. NOTES GENERAL NOTES SITE PREP & T.E.S.C. PLAN SP01 4 OF 17
5 SITE PREP & T.E.S.C. NOTES GENERAL NOTES SITE PREP & T.E.S.C. PLAN SP02 5 OF 17
6 SITE PREP & T.E.S.C. NOTES GENERAL NOTES SITE PREP & T.E.S.C. PLAN SP03 6 OF 17
7 SITE PREP & T.E.S.C. NOTES GENERAL NOTES SITE PREP & T.E.S.C. PLAN SP04 7 OF 17
8 GENERAL NOTES SITE PREP & T.E.S.C. NOTES SITE PREP & T.E.S.C. PLAN SP05 8 OF 17
9 GENERAL NOTES CONSTRUCTION NOTES ROADWAY PLAN PL01 9 OF 17
10 CONSTRUCTION NOTES GENERAL NOTES ROADWAY PLAN PL02 10 OF 17
11 CONSTRUCTION NOTES GENERAL NOTES ROADWAY PLAN PL03 11 OF 17
12 CONSTRUCTION NOTES GENERAL NOTES ROADWAY PLAN PL04 12 OF 17
13 CONSTRUCTION NOTES GENERAL NOTES ROADWAY PLAN PL05 13 OF 17
14 NO. DATE BY APPR REVISION DT01 TYPICAL SECTIONS AND DETAILS 14 OF 17
15 BUFFER DATA LONGITUDINAL BUFFER SPACE = B SPEED (MPH) LENGTH (feet) TRANSPORTABLE ATTENUATOR ROLL DISTANCE = R 100' HOST VEHICLE WEIGHT 9,900 TO 22,000 lbs. 123' 172' HOST VEHICLE WEIGHT > 22,000 lbs. < 45 MPH 4555 MPH > 55 MPH < 45 MPH 4555 MPH > 55 MPH 100' PROTECTIVE VEHICLE (WORK VEHICLE) = R 74' NO SPECIFIED DISTANCE REQUIRED 150' RURAL ROADS 45 / 55 MPH 500' ± RURAL ROADS & URBAN ARTERIALS 35 / 40 MPH 350' ± RURAL ROADS & URBAN ARTERIALS RESIDENTAL & BUSINESS DISTRICTS SIGN SPACING = X (1) 25 / 30 MPH 200' ±(2) URBAN STREETS 25 MPH OR LESS 100' ± (2) (1) ALL SPACING MAY BE ADJUSTED TO ACCOMMODATE INTERCHANGE RAMPS, ATGRADE INTERSECTIONS AND DRIVEWAYS. (2) THIS SPACING MAY BE REDUCED IN URBAN AREAS TO FIT ROADWAY CONDITIONS. LANE WIDTH (feet) MINIMUM TAPER LENGTH = L (feet) Posted Speed (mph) W42R LEFT LANE CLOSED ROAD WORK W CHANNELIZATION DEVICE SPACING (feet) MPH 50 35/45 25/30 TAPER TANGENT L/2 TAPER R B L L/2 TAPER W205L X X X PCMS WORK AREA PCMS X X X L B R ROAD WORK W201 LEFT LANE CLOSED W42R LEFT LANE AND CENTER ISLAND CLOSURE FOR MULTILANE ROADWAYS CLOSURE 5 LANE ROADWAY 1 2 CENTER LANE CLOSED PCMS NO LEFT TURNING 2.0 SEC 2.0 SEC FIELD LOCATE IN ADVANCE OF TEMPORARY SIGNS. TEMPORARY SIGN LOCATION CHANNELIZING DEVICES W205L NOT TO SCALE SEQUENTIAL ARROW SIGN NOTES PROTECTIVE VEHICLE 1. SEE SPECIAL PROVISIONS FOR WORK HOUR RESTRICTIONS. PCMS PORTABLE CHANGEABLE MESSAGE SIGN 2. ALL SIGNS ARE BLACK ON ORANGE. TRAFFIC CONTROL TC01 15 OF 17
16 LANE WIDTH (feet) SHOULDER WIDTH (feet) MINIMUM LANE CLOSURE TAPER LENGTH = L (feet) Posted Speed (mph) MINIMUM SHOULDER TAPER LENGTH = L/3 (feet) Posted Speed (mph) FREEWAYS & EXPRESSWAYS RURAL HIGHWAYS RURAL ROADS 45 / 55 MPH 500' ± RURAL ROADS & URBAN ARTERIALS 35 / 40 MPH 350' ± RURAL ROADS & URBAN ARTERIALS RESIDENTIAL & BUSINESS DISTRICTS SIGN SPACING = X (1) 55 / 70 MPH / 65 MPH 1500' ± 800' ± 25 / 30 MPH 200' ± (2) URBAN STREETS 25 MPH OR LESS 100' ± (2) (1) ALL SPACING MAY BE ADJUSTED TO ACCOMMODATE INTERCHANGE RAMPS, ATGRADE INTERSECTIONS AND DRIVEWAYS. (2) THIS SPACING MAY BE REDUCED IN URBAN AREAS TO FIT ROADWAY CONDITIONS. CHANNELIZATION DEVICE SPACING (feet) MPH 50/70 35/45 25/30 TAPER TANGENT BUFFER DATA LONGITUDINAL BUFFER SPACE = B SPEED (MPH) LENGTH (feet) TRANSPORTABLE ATTENUATOR ROLL DISTANCE = R 100' HOST VEHICLE WEIGHT 9,900 TO 22,000 lbs. 123' 172' HOST VEHICLE WEIGHT > 22,000 lbs. < 45 MPH 4555 MPH > 55 MPH < 45 MPH 4555 MPH > 55 MPH 74' 100' 150' 8' ' USE A MINIMUM 3 DEVICES TAPER FOR SHOULDER LESS THEN 8'. 2' MIN. PCMS 1 2 WORK AREA RIGHT LANE CLOSURE 1 MILE L/3 SEE NOTE 4 X X X L B R 100' 2.0 SEC 2.0 SEC FIELD LOCATE 1 MILE ± IN ADVANCE OF LANE CLOSURE SIGNING. ROAD WORK TEMPORARY SIGN LOCATION TRAFFIC SAFETY DRUM W201 RIGHT LANE CLOSED W205R W42(L) NOTES: SEE SPECIAL PROVISIONS FOR WORK HOUR RESTRICTIONS. EXTEND DEVICE TAPER AT L/3 ACROSS SHOULDER. DEVICES SHALL NOT ENCROACH INTO THE ADJACENT LANE. USE TRANSVERSE DEVICES IN CLOSED LANE EVERY 1000' (FT) (RECOMMENDED). SEQUENTIAL ARROW SIGN TRANSPORTABLE ATTENUATOR SINGLELANE CLOSURE FOR MULTILANE ROADWAYS 5. DEVICE SPACING FOR THE DOWNSTREAM TAPER SHALL BE 20' (FT). PCMS PORTABLE CHANGEABLE MESSAGE SIGN NOT TO SCALE 6. ALL SIGNS ARE BLACK ON ORANGE. TRAFFIC CONTROL TC02 16 OF 17
17 CHANNELIZATION DEVICE SPACING (feet) MPH 50/70 35/45 25/30 TAPER LANE WIDTH (feet) TANGENT WORK AREA MINIMUM TAPER LENGTH = L (feet) Posted Speed (mph) W42(L) RIGHT LANE CLOSED W205R R B L X X X ROAD WORK W201 RURAL HIGHWAYS BUFFER DATA LONGITUDINAL BUFFER SPACE = B SPEED (MPH) LENGTH (feet) TRANSPORTABLE ATTENUATOR ROLL DISTANCE = R 100' HOST VEHICLE WEIGHT 9,900 TO 22,000 lbs. 123' 172' SIGN SPACING = X (1) / 65 MPH 800' ± RURAL ROADS 45 / 55 MPH 500' ± RURAL ROADS & URBAN ARTERIALS 35 / 40 MPH 350' ± RURAL ROADS & URBAN ARTERIALS RESIDENTAL & BUSINESS DISTRICTS HOST VEHICLE WEIGHT > 22,000 lbs. < 45 MPH 4555 MPH > 55 MPH < 45 MPH 4555 MPH > 55 MPH 74' 100' PROTECTIVE VEHICLE (WORK VEHICLE) = R NO SPECIFIED DISTANCE REQUIRED 150' 25 / 30 MPH 200' ± (2) URBAN STREETS 25 MPH OR LESS 100' ± (2) (1) ALL SPACING MAY BE ADJUSTED TO ACCOMMODATE INTERCHANGE RAMPS, ATGRADE INTERSECTIONS AND DRIVEWAYS. (2) THIS SPACING MAY BE REDUCED IN URBAN AREAS TO FIT ROADWAY CONDITIONS. TEMPORARY SIGN LOCATION CHANNELIZING DEVICES SEQUENTIAL ARROW SIGN PROTECTIVE VEHICLE RECOMMENDED INTERSECTION LANE CLOSURE ~ FIVE LANE ROADWAY NOT TO SCALE NOTES RECOMMEND EXTENDING DEVICE TAPER (L/3) ACROSS SHOULDER. IF A SIGNAL IS PRESENT, IT SHALL BE SET TO "RED FLASH MODE" OR TURNED OFF DURING FLAGGING OPERATIONS. MAINTAIN A MINIMUM OF ONE ACCESS POINT FOR EACH BUSINESS WITHIN WORK AREA LIMITS. ALL SIGNS ARE BLACK ON ORANGE. TRAFFIC CONTROL TC03 17 OF 17
SN01 STANDARD NOTES CITY OF SAMMAMISH 2018 FLASHING YELLOW ARROW SIGNALS PROJECT NO. DATE BY APPR REVISION COSA0023 KING COUNTY WASHINGTON
STANDARD NOTES SN01 2 OF 8 ROADWAY PLAN PL01 3 OF 8 ROADWAY PLAN PL02 4 OF 8 LANE 10 105 150 205 270 450 500 550 11 12 SHOULDER 115 125 MINIMUM LANE CLOSURE TAPER LENGTH = L 165 225 295 180 245 320 5 25
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