127-GUIDE_SHEET_-_Penpendicular_Ramp(s).pdf
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- Solicitation number
- CWB014279
- Issued by
- Fairfield County, Bridgeport City, Connecticut
About this file
This is a technical guide sheet document prepared by the Connecticut Department of Transportation establishing design standards for concrete sidewalk ramps and perpendicular ADA ramp installations. The guide specifies detailed specifications for the City of Bridgeport's citywide sidewalk, curb, apron, and ADA ramp repair and replacement project. Electronic bid submissions are due to the City of Bridgeport's Department of Public Purchases by 2:00 p.m. on Tuesday, September 22, 2026, through the City's e-Procurement Portal (OpenGov). Bidders must create a free account to submit responses. The cut-off date for written questions is 5:00 p.m. on Tuesday, September 8, 2026, with all answers published as addenda on the procurement website.
The guide sheet establishes minimum design standards including maximum ramp slopes of 8.33 percent (7.1 percent typical), minimum turning spaces of 2.0 percent slope (1.5 percent typical), 48-inch minimum clear width specifications, and detectable warning surfaces extending 2 feet minimum at street crossings. Sidewalk ramps must have coarse broom finish, vertical surface discontinuities not exceeding 1/4 inch at joints, and curb ramps constructed to prevent water accumulation. The specifications comply with the Public Right-of-Way Accessibility Guidelines (PROWAG) draft 2013 guidelines and cite Connecticut's Engineering Directive ED-2019-7 as the design standard reference. All specifications are applicable to the various ramp types illustrated, including perpendicular ramps with and without non-walking surfaces and CTDOT storm inlet installations.
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Text version
8.33% MAX.
7.1% TYP.
RAMP SLOPE
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
UTILITY POLE
WITH RAMP (TYP.)
INCLUDED
SLOPED CURBING
WITH RAMP (TYP.)
INCLUDED
SLOPED CURBING
48" MIN.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
TURNING SPACE
2.0% MAX.
1.5% TYP.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
CTDOT
STORM
(TYPE 19)
WITH NON-WALKING SURFACE
PERPENDICULAR RAMP
(TYPE 18 LEFT)
WITH NON-WALKING SURFACE
PERPENDICULAR RAMP
(TYPE 18 RIGHT)
WITH NON-WALKING SURFACE
PERPENDICULAR RAMP
R=2' MIN. (TYP.)
R=2' MIN. (TYP.)
R=2' MIN. (TYP.)
R=2' MIN. (TYP.)
CURBING
NON-WALKING SURFACE
WITH RAMP (TYP.)
SIDEWALK CURBING INCLUDED
MANHOLE
NON-WALKING SURFACE
CURBING
10% MAX.
10% MAX.
NON-WALKING SURFACE
CURBING
NON-WALKING SURFACE
SURFACE
NON-WALKING CURBING
SURFACE
NON-WALKING
SURFACE
NON-WALKING
CURBING
CURBING
48" MIN.
48" MIN.
48" MIN.
48" MIN.
60" MIN.60" MIN.
(REVEAL NOT TO EXCEED 12")
SIDEWALK CURBING (OPTIONAL)
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
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
2.0% MAX.
1.5% TYP.
RAMP SLOPE
RAMP SLOPE
2.0% MAX.
1.5% TYP.
UTILITY POLE
WITH RAMP (TYP.)
INCLUDED
SLOPED CURBING
WITH RAMP (TYP.)
INCLUDED
SLOPED CURBING
48" MIN.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
TURNING SPACE
2.0% MAX.
1.5% TYP.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
CTDOT
STORM
(TYPE 19)
WITH NON-WALKING SURFACE
PERPENDICULAR RAMP
(TYPE 18 LEFT)
WITH NON-WALKING SURFACE
PERPENDICULAR RAMP
(TYPE 18 RIGHT)
WITH NON-WALKING SURFACE
PERPENDICULAR RAMP
R=2' MIN. (TYP.)
R=2' MIN. (TYP.)
R=2' MIN. (TYP.)
R=2' MIN. (TYP.)
CURBING
NON-WALKING SURFACE
WITH RAMP (TYP.)
SIDEWALK CURBING INCLUDED
MANHOLE
NON-WALKING SURFACE
CURBING
10% MAX.
10% MAX.
NON-WALKING SURFACE
CURBING
NON-WALKING SURFACE
SURFACE
NON-WALKING CURBING
SURFACE
NON-WALKING
SURFACE
NON-WALKING
CURBING
CURBING
48" MIN.
48" MIN.
48" MIN.
48" MIN.
60" MIN.60" MIN.
(REVEAL NOT TO EXCEED 12")
SIDEWALK CURBING (OPTIONAL)
GENERAL NOTES:
¼
ACCUMLATE WITHIN THE PEDESTRIAN ACCESS ROUTE.
9. CURB RAMPS SHALL BE CONSTRUCTED SO THAT WATER WILL NOT
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 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
2.0% MAX.
1.5% TYP.
RAMP SLOPE
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 7 OF 11
CONCRETE SIDEWALK RAMPS
TRANSPORTATION
DEPARTMENT OF
CONNECTICUT
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