112-GUIDE_SHEET_-_Two_Directional_Perpendicular_&_Blended_Ramp(s).pdf
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- Solicitation number
- CWB014279
- Issued by
- Fairfield County, Bridgeport City, Connecticut
About this file
This is a design guide sheet document issued by the Connecticut Department of Transportation (CTDOT) establishing technical standards for concrete sidewalk ramps, specifically addressing two-directional perpendicular and blended ramp configurations. The guide sheet presents five distinct ramp types (Types 1-5) with varying specifications based on the distance from the non-walking surface to the back of curb, ranging from 5 feet or less to greater than 5 feet, and includes configurations with turning spaces at the top. The document establishes maximum ramp slopes of 8.33 percent (with typical slopes of 7.1 percent), requires minimum 48-inch widths, specifies 2.0 percent maximum transverse slopes in turning spaces, mandates detectable warning surfaces extending 2 feet minimum in the direction of pedestrian travel, and requires coarse broom finishes on sidewalk ramps. All specifications comply with the Public Right-of-Way Accessibility Guidelines (PROWAG) Draft 2013, with the document dated October 30, 2024, and identified as Sheet 2 of 11 from CTDOT's Highway Standards and Guide Sheets manual.
The design guide sheet includes several critical construction requirements and general notes applicable to all curb ramp installations. Vertical surface discontinuities at joints shall not exceed one-quarter inch, and removal of existing sidewalks for new ramp installations must align to the nearest expansion or contraction joint. Curb ramps must be constructed to prevent water accumulation within the pedestrian access route. The document references CTDOT Engineering Directive ED-2019-7 and indicates that updated values will be implemented to comply with PROWAG Final Rule once officially established as law. This guide sheet directly supports the City of Bridgeport's Citywide Sidewalk, Curb, Apron & ADA Ramp Repair and Replacement project, with electronic bid submissions required through the OpenGov Procurement Portal by 2:00 pm on Tuesday, September 22, 2026, and a question submission deadline of 5:00 pm on Tuesday, September 8, 2026.
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Text version
(TYPE 3)
WITH NON-WALKING SURFACE
TO BACK OF CURB OF 5' OR LESS
WITH A GRADE BREAK
TWO DIRECTIONAL PERPENDICULAR RAMP
(TYPE 4)
WITH NON-WALKING SURFACE
TO BACK OF CURB GREATER THAN 5'
WITH A GRADE BREAK
TWO DIRECTIONAL PERPENDICULAR RAMP
(TYPE 2)
WITH GRADE BREAK TO BACK OF CURB GREATER THAN 5'
TWO DIRECTIONAL PERPENDICULAR RAMP
(TYPE 5)
WITH TURNING SPACE AT TOP
BLENDED TRANSITION
(TYPE 1)
WITH A GRADE BREAK TO BACK OF CURB OF 5' OR LESS
TWO DIRECTIONAL PERPENDICULAR RAMP
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
8.33% MAX.
7.1% TYP.
RAMP SLOPE
48" MIN.
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
SURFACE (SEE NOTE 6)
DETECTABLE WARNING 2.0% MAX.
1.5% TYP.
TURNING SPACE
CURBING
SURFACE
NON-WALKING
48" MIN.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
CURBING
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
BACK OF CURB
LESS THAN 5' TO THE
BOTH GRADE BREAKS
CURBING
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
8.33% MAX.
7.1% TYP.
RAMP SLOPE
48" MIN.
48" MIN.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
2.0% MAX.
1.5% TYP.
TURNING SPACE
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
CURBING
NON-WALKING SURFACE
THE BACK OF CURB
GREATER THAN 5' TO
EITHER GRADE BREAK
SURFACE
NON-WALKING
CURBING
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
CURBING
SURFACE
NON-WALKING
SURFACE
NON-WALKING
48" MIN.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
48" MIN.
2.0% MAX.
1.5% TYP.
TURNING SPACE
BACK OF CURB
LESS THAN 5' TO THE
BOTH GRADE BREAKS
SURFACE
NON-WALKING
CURBING
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
48" MIN.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
48" MIN.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
2.0% MAX.
1.5% TYP.
TURNING SPACE
THE BACK OF CURB
GREATER THAN 5' TO
EITHER GRADE BREAK
SURFACE
NON-WALKING
CURBING
SURFACE
NON-WALKING
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
CURBING
48" MIN.
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
0" - 1/4" MAX.
LIP HEIGHT
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
MAX.
10%
MAX.
10%
SLOPE 5.0% MAX
TYP. RAMP RUNNING
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 2 OF 11
CONCRETE SIDEWALK RAMPS
TRANSPORTATION
DEPARTMENT OF
CONNECTICUT
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