133-GUIDE_SHEET_-_Pedestrian_Refuse_Island(s).pdf
PDF 697 KB Posted
- Solicitation number
- CWB014279
- Issued by
- Fairfield County, Bridgeport City, Connecticut
About this file
This is a Connecticut Department of Transportation design guide sheet for pedestrian refuge islands and concrete sidewalk ramps, applicable to various towns throughout Connecticut. The document provides standardized specifications and technical requirements for the construction of ADA-compliant pedestrian infrastructure, including six types of pedestrian refuge islands (Types 22-26) and detailed guidance on sidewalk ramps. The guide includes dimensional requirements such as minimum turning spaces of 60 inches, median width specifications, ramp slope maximums of 8.33 percent, and detectable warning surface installations. Key construction notes specify that sidewalk ramps must have a coarse broom finish, vertical surface discontinuities at joints shall not exceed one-quarter inch, and removal of existing sidewalk for new ramp installations shall be to the nearest expansion or contraction joint. Detectable warning surfaces must extend a minimum of two feet and span entire ramp openings at pedestrian street crossings, railroad crossings, and pedestrian refuge islands, with ramp lengths not to exceed 15 feet.
This guide sheet reflects Connecticut Department of Transportation design standards that comply with the Public Right-of-Way Accessibility Guidelines (PROWAG) Draft 2013 standards, with provisions for future updates to align with PROWAG Final Rule requirements as outlined in Engineering Directive ED-2019-7. The technical specifications address water drainage requirements to prevent accumulation within pedestrian access routes and establish detailed curb ramp construction standards. The document was last updated on October 30, 2024, and is part of the broader Connecticut DOT Highway Standards and Guide Sheets collection, supporting the state's infrastructure development initiatives including projects such as Bridgeport's Citywide Sidewalk, Curb, Apron & ADA Ramp Repair and Replacement program.
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Text version
ROADWAY
RAISED ISLAND
CURBING
60" MIN.
(GRADE TO DRAIN)
TURNING SPACE
60" MIN. x 60" MIN.
REFUGE
PEDESTRIAN
(TYPE 22)
MEDIAN WIDTH 6' OR MORE
CUT-THROUGH PEDESTRIAN REFUGE ISLAND
(TYPE 24)
PEDESTRIAN REFUGE ISLAND WITH LANDING AND RAMPS
R=2' MIN. (TYP.)
(TYPE 26)
OFFSET CONFIGURATION
CUT-THROUGH PEDESTRIAN REFUGE ISLAND
(TYPE 25)
CUT-THROUGH PEDESTRIAN REFUGE ISLAND
RAISED MEDIAN
RAISED MEDIAN
R=2' MIN. (TYP.)
(TYPE 23)
MEDIAN WIDTH LESS THAN 6'
CUT-THROUGH PEDESTRIAN REFUGE ISLAND
CURBING
CONCRETE SIDEWALK
RAISED MEDIAN
CURBING
CURBING
60" MIN.
SIDEWALK CURBING (TYP.)
MEDIAN WIDTH 6' OR MORE
24" MIN.
CURBING (TYP.)
SIDEWALK
R=2' MIN. (TYP.)
2.0% MAX.
1.5% TYP.
TURNING SPACE
CURBING
CONCRETE SIDEWALK
RAISED MEDIAN
CURBING
CURBING
SIDEWALK CURBING (TYP.)
CURBING (TYP.)
SIDEWALK
LESS THAN 6'
MEDIAN WIDTH
R=2' MIN. (TYP.)
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
RAISED MEDIAN
CURBING
CURBING
2.0% MAX.
1.5% TYP.
TURNING SPACE
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
MEDIAN ISLAND
R=2' MIN. (TYP.)
CURBING
CURBING
SIDEWALK CURBING (TYP.)
CURBING
SIDEWALK CURBING (TYP.)
ROADWAY
ROADWAY
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
60" MIN.
60" MIN.
60" MIN.
60" MIN.
60" MIN.
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
GENERAL NOTES:
¼
DIRECTION OF PEDESTRIAN TRAVEL AND SPAN THE ENTIRE RAMP OPENING.
6. DETECTABLE WARNING SURFACES SHALL EXTEND 2 FEET MIN. IN THE
RAILROAD CROSSINGS ALONG STREETS OR HIGHWAYS.
AT PEDESTRIAN STREET CROSSINGS, PEDESTRIAN REFUGE ISLANDS AND
5. DETECTABLE WARNING SURFACES SHALL BE INSTALLED ON SIDEWALK RAMPS
BUT SHALL NOT REQUIRE THE RAMP LENGTH TO EXCEED 15 FEET.
4. THE RUNNING SLOPE OF THE CURB RAMP SHALL BE 8.33 PERCENT MAXIMUM
BE TO THE NEAREST EXPANSION OR CONTRACTION JOINT.
3. REMOVAL OF EXISTING SIDEWALK FOR NEW RAMP INSTALLATIONS SHALL
INCH.2. VERTICAL SURFACE DISCONTINUITIES AT JOINTS SHALL NOT EXCEED
THE SLOPE OF THE RAMP.
1. SIDEWALK RAMPS SHALL HAVE A COARSE BROOM FINISH TRANSVERSE TO
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
2.0% MAX.
1.5% TYP.
TURNING SPACE
60" MIN.
60" MIN.
60" MIN.
ROADWAY
RAISED ISLAND
CURBING
60" MIN.
(GRADE TO DRAIN)
TURNING SPACE
60" MIN. x 60" MIN.
REFUGE
PEDESTRIAN
(TYPE 22)
MEDIAN WIDTH 6' OR MORE
CUT-THROUGH PEDESTRIAN REFUGE ISLAND
(TYPE 24)
PEDESTRIAN REFUGE ISLAND WITH LANDING AND RAMPS
R=2' MIN. (TYP.)
(TYPE 26)
OFFSET CONFIGURATION
CUT-THROUGH PEDESTRIAN REFUGE ISLAND
(TYPE 25)
CUT-THROUGH PEDESTRIAN REFUGE ISLAND
RAISED MEDIAN
RAISED MEDIAN
R=2' MIN. (TYP.)
(TYPE 23)
MEDIAN WIDTH LESS THAN 6'
CUT-THROUGH PEDESTRIAN REFUGE ISLAND
CURBING
CONCRETE SIDEWALK
RAISED MEDIAN
CURBING
CURBING
60" MIN.
SIDEWALK CURBING (TYP.)
MEDIAN WIDTH 6' OR MORE
24" MIN.
CURBING (TYP.)
SIDEWALK
R=2' MIN. (TYP.)
2.0% MAX.
1.5% TYP.
TURNING SPACE
CURBING
CONCRETE SIDEWALK
RAISED MEDIAN
CURBING
CURBING
SIDEWALK CURBING (TYP.)
CURBING (TYP.)
SIDEWALK
LESS THAN 6'
MEDIAN WIDTH
R=2' MIN. (TYP.)
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
RAISED MEDIAN
CURBING
CURBING
CURBING
2.0% MAX.
1.5% TYP.
TURNING SPACE
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
MEDIAN ISLAND
R=2' MIN. (TYP.)
CURBING
CURBING
SIDEWALK CURBING (TYP.)
CURBING
SIDEWALK CURBING (TYP.)
ROADWAY
ROADWAY
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
60" MIN.
60" MIN.
60" MIN.
60" MIN.
60" MIN.
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
GENERAL NOTES:
¼
WITHIN THE PEDESTRIAN ACCESS ROUTE.
9. CURB RAMPS SHALL BE CONSTRUCTED SO THAT WATER WILL NOT ACCULATE
GUIDELINES (PROWAG) SEE ENGINEERING DIRECTIVE ED-2019-7.
8. CTDOT DESIGN STANDARD USE THE PUBLIC RIGHT-OF-WAY ACCESSIBILITY
ONCE OFFICIALLY THE LAW.
UPDATED VALUES WILL BE MADE TO COMPLY WITH PROWAG FINAL RULE
7. ALL GUIDESHEET VALUES COMPLY WITH PROWAG DRAFT 2013 GUIDELINES.
DIRECTION OF PEDESTRIAN TRAVEL AND SPAN THE ENTIRE RAMP OPENING.
6. DETECTABLE WARNING SURFACES SHALL EXTEND 2 FEET MIN. IN THE
RAILROAD CROSSINGS ALONG STREETS OR HIGHWAYS.
AT PEDESTRIAN STREET CROSSINGS, PEDESTRIAN REFUGE ISLANDS AND
5. DETECTABLE WARNING SURFACES SHALL BE INSTALLED ON SIDEWALK RAMPS
BUT SHALL NOT REQUIRE THE RAMP LENGTH TO EXCEED 15 FEET.
4. THE RUNNING SLOPE OF THE CURB RAMP SHALL BE 8.33 PERCENT MAXIMUM
BE TO THE NEAREST EXPANSION OR CONTRACTION JOINT.
3. REMOVAL OF EXISTING SIDEWALK FOR NEW RAMP INSTALLATIONS SHALL
INCH.2. VERTICAL SURFACE DISCONTINUITIES AT JOINTS SHALL NOT EXCEED
THE SLOPE OF THE RAMP.
1. SIDEWALK RAMPS SHALL HAVE A COARSE BROOM FINISH TRANSVERSE TO
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT0" - 1/4" MAX.
LIP HEIGHT
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
2.0% MAX.
1.5% TYP.
TURNING SPACE
60" MIN.
60" MIN.
60" MIN.
PROJECT TITLE: PROJECT NO.: DRAWING NO.:
SHEET NO.:
10/30/2024
SIGNATURE BLOCK: DRAWING TITLE:
TOWN(S):
VARIOUSTEST PROJECT
PLOTTED DATE:
C:\Users\KIlpatrickdj\State of Connecticut\DOT Engineering Services - Documents\HWY_STD_GUIDE_DWG\B - Going for signatures\Jan 2025 Stnd & Guide Shts\CTDOT_HIGHWAY_GD Jan 2025 [10-30-24].dgn FILE NAME: kilpatrickdj LASTED SAVED BY:
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DESIGNER/DRAFTER: CHECKED BY:
SHEET 9 OF 11
CONCRETE SIDEWALK RAMPS
TRANSPORTATION
DEPARTMENT OF
CONNECTICUT
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