DSGN_S_121_003757_7 (STAMPED)_GDOT Signal Per.pdf

PDF 256 KB Posted May 16, 2025

Attached to: 25-046 T-9500-23-2A - Roswell Road Signal Upgrades
Solicitation number: PE-66098-NONST-2025-000000088
Issued by: Fulton County, Georgia

About this file

Written by GovTribe AI · May 19, 2025

This document is a traffic signal installation plan prepared by Lowe Engineers for the Georgia Department of Transportation (GDOT) for Signal Installation No. 3 at the intersection of State Route 9/Roswell Road and Trowbridge Road. The project involves a comprehensive traffic signal upgrade, including installing new pedestrian signals with APS (Accessible Pedestrian Signal) speaker systems, LED pedestrian countdown signal heads, curb cut ramps, concrete sidewalks, detection loops, and various regulatory signage. The plan includes detailed phasing diagrams, signal legends, detection zones, and specific installation instructions for signal heads, conduits, and roadway markings.

The design incorporates multiple technical elements such as magnetometer and radar detection, video detection cameras, inductive loops, and 12' pedestal poles. The intersection modifications include traffic striping, stop bars, crosswalks, and the retention of existing signal equipment where appropriate. The plan specifies speed limits (45 MPH on Roswell Road, 25-30 MPH on Trowbridge Road) and includes precise measurements and placement instructions for all proposed infrastructure changes. The drawing is dated 8/26/2024 and carries the Georgia D.O.T. approval, indicating this is an official transportation infrastructure improvement project.

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Other files

File	Type	Posted
25_046 T_9500 23 2A Roswell Road Signal Upgra.pdf	PDF	May 16, 2025
Stamped DSGN_S_121_003759_7_Northridge.pdf	PDF	May 16, 2025
Special Provisions.pdf	PDF	May 16, 2025

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SIGNAL PLANS

27-0005

PROPOSED

SIGNAL HEAD

EXISTING

SIGNAL HEAD

RELOCATED

SIGNAL HEAD

PEDESTRIAN

SIGNAL HEAD

PROPOSED 5-SECTION

(CLUSTER) SIGNAL HEAD

PROPOSED 4-SECTION

SIGNAL HEAD

SIGNAL LEGEND DETECTION LEGEND

PROPOSED MAGNETOMETER PROPOSED RADAR

PROPOSED VIRTUAL DETECTION ZONE

PROPOSED INDUCTIVE LOOP

PROPOSED VIDEO DETECTION CAMERA

SR 9/ ROSWELL ROAD @ TROWBRIDGE ROAD

TRAFFIC SIGNAL INSTALLATION NO. 3

ONLY

01/ 02/ 03/ 04/

05/ 06/ 07/ 08/

PHASING DIAGRAM

W W

OMIT

12"

LEFT TURN

YIELD

YELLOW

ARROW

ON FLASHING

TO CROSS

PUSH BUTTON

START CROSSING

DON'T START

FINISH CROSSING

IF STARTEDFLASHING

STEADY

PEDESTRIAN SIGNS

VEHICLES

WATCH FOR

DON'T CROSS

TIME REMAINING

TO FINISH CROSSING

TIMER

START CROSSING

DON'T START

FINISH CROSSING

IF STARTEDFLASHING

STEADY

VEHICLES

WATCH FOR

DON'T CROSS

TIME REMAINING

TO FINISH CROSSING

TIMER

TO CROSS

PUSH BUTTON

D3-1 (#1)Trowbridge Rd

Roswell Rd D3-1 (#2)

MUST

RIGHT LANE

TURN RIGHT

ON RED

TURN

12"

INTERNALLY ILLUMINATED OVERHEAD SIGNS

Y R

G G

REVISION DATES

8/26/2024 rmeehan

LOWE ENGINEERS

gplotborder-V8i-PO.tbl

0240003_27-0005.dgn

Design File and Plot Substitution information

5:08:32 PM

GPLN10/23/2015

DRAWING No.CHECKED:

BACKCHECKED:

CORRECTED:

VERIFIED:

DATE:

ENG NEERSI

990 HAMMOND DRIVE, SUITE 900, ATLANTA, GA 30328

PHONE 770.857.8400 FAX 770.857.8401

30 120

SCALE IN FEET

0 60

STEVEN ROSA 111

N/F

TWOSOME REALTY INC

N/F

7475 ROSWELL ROAD LLC

N/F

VICTORIA ERIQAT

N/F

D (3

D (2

P2,P4,P6,P8

1,5

SR 9/ROSWELL RD (45 MPH)SR 9/ROSWELL RD (45 MPH)

INSTALL CURB CUT RAMP, TYPE B

INSTALL CONC SIDEWALK, 8"

INSTALL CURB CUT RAMP, TYPE B

INSTALL CONC SIDEWALK, 8"

TIE TO EXISTING

BEGIN CURB & GUTTER, 8"X30", TP 2

TIE TO EXISTING

BEGIN CONC SIDEWALK, 4"

BEGIN CONC SIDEWALK, 8"

END CONC SIDEWALK, 4"

APS PUSHBUTTON STATIONS AND SIGNS

NSTALL PUSHBUTTON POST W/

INSTALL PULLBOX, TP 2

APS PUSHBUTTON STATIONS AND SIGNS

HEADS (P4 & P6) WITH APS SPEAKER,

W/LED PEDESTRIAN COUNTDOWN SIGNAL

INSTALL 12' PEDESTAL POLE

INSTALL PULLBOX, TP 2

APS PUSHBUTTON STATIONS AND SIGNS

HEADS (P2 & P8) WITH APS SPEAKER,

W/LED PEDESTRIAN COUNTDOWN SIGNAL

INSTALL 12' PEDESTAL POLE

RETAIN EXISTING STRAIN POLE

INSTAL 2 - 2" CONDUIT, NM (10 LF EA)

RETAIN EXISTING STRAIN POLE

BEGIN CONC SIDEWALK, 4"

END CONC SIDEWALK, 8"

TIE TO EXISTING

END CONC SIDEWALK, 4"

TIE TO EXISTING

END CURB & GUTTER, 8"X30", TP 2

INSTALL CURB CUT RAMP, TYPE C

TIE TO EXISTING

BEGIN CURB & GUTTER, 8"X30", TP 2

R35' R35'

INSTALL 2 - 2" CONDUIT, NM (15 LF EA)

RETAIN EXISTING STRAIN POLE

IN 5" DIRECTIONAL BORE (85 LF)

INSTALL 2 - 2" CONDUIT, NM (85 LF EA)

RETAIN EXISTING CABINET

INSTALL PULLBOX, TP 2

APS PUSHBUTTON STATIONS AND SIGNS

HEADS (P6 & P8) WITH APS SPEAKER,

W/LED PEDESTRIAN COUNTDOWN SIGNAL

INSTALL 12' PEDESTAL POLE

INSTALL CURB CUT RAMP, TYPE C

INSTALL CONC SIDEWALK, 8"

BEGIN CONC SIDEWALK, 4"

END CONC SIDEWALK, 8" TIE TO EXISTING

END CONC SIDEWALK, 4"

END CURB & GUTTER, 8"X30", TP 2

TRAFFIC STRIPING, WHITE, DETAIL 'B'

INSTALL 50 SY, THERMOPLASTIC

STOP BAR (TYP)

24" SOLID WHITE

8" SOLID WHITE CROSSWALK (TYP)

330 FEET FROM STOP BAR

6'X6' SETBACK LOOP

L6A

L6B

330 FEET FROM STOP BAR

6'X6' SETBACK LOOP

L2A

L2B

L8A L8B

INSTALL 6'X40' DETECTION LOOP (TYP)

D3-1(#1)

D3-1(#2)

REMOVE EXISTING ISLAND

EXCEPT AS SHOWN

5. RETAIN ALL EXISTING OVERHEAD AND ROADWAY SIGNS

INSTALL NEW STOP BARS AND CROSSWALKS AS SHOWN

4. ERADICATE ALL EXISTING STOP BARS AND CROSSWALKS AND

3. RETAIN EXISTING DETECTION EXCEPT AS NOTED

2. REPLACE ALL PEDESTRIAN SIGNALS AS SHOWN

STRAIN POLES AND SIGNAL HEADS.

1. RETAIN EXISTING CABINET, SIGNAL EQUIPMENT AND

NOTES

REMOVE EXIST R1-2

REMOVE EX R560-5

R10-3e(R) 9" X 15"9" X 15"

R10-3e(L)

24"X30" R10-11

24"x30" R10-5A

24"x30" R8-3a

R8-3A R3-7R

30"x30" R3-7R

R10-5A

INSTALL R10-11

REMOVE EX R560-5

REMOVE EXIST R1-2

RETRO REFLECTIVE TAPE

LED SIGNAL HEADS WITH BACKPLATES W/

REGULATORY SIGNS

EXIST R/W EXIST R/W

EXIST R/W

T R/

8AINSTALL R10-5A

AND D3-1(#2) SIGN

ADJUST EXISTING 3-SECTION SIGNAL HEADS

INSTALL 3-SECTION FYA SIGNAL HEAD

TYPE 3R (TYP)

INSTALL PAVEMENT MARKING ARROW,

TYPE 2 (TYP)

INSTALL PAVEMENT MARKING ARROW,

INSTALL 5" SKIP WHITE (2' SEG,4' GAP)

YELLOW,DETAIL 'B'

INSTALL 66 SY THERMOPLASTIC TRAFFIC STRIPING

2,4,4S,6,8,8S

HEADS (P2 & P4) WITH APS SPEAKER

INSTALL LED PEDESTRIAN COUNTDOWN SIGNAL

INSTALL SUPPLEMENTAL SIGNAL HEAD, 4S

RETAIN EXISTING STRAIN POLE

REMOVE EX R10-15L

8 8

P6P6

4 4

APPROVED

TMC

Georgia D.O.T.

	2024-08-27T12:31:09-0400
SM
I have reviewed this document

File details come from the government source that posted it. Updated May 19, 2025.