124-GUIDE_SHEET_-_Single_Direction_Perpendicular_Ramp(s).pdf
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- Solicitation number
- CWB014279
- Issued by
- Fairfield County, Bridgeport City, Connecticut
About this file
This is a design guideline document issued by the Connecticut Department of Transportation (CTDOT) for the construction of concrete sidewalk ramps, specifically addressing single direction perpendicular ramp configurations. The document provides technical specifications and standards for four ramp types (Types 14-17) that accommodate various grade break conditions, ranging from greater than 5 feet to no curb configurations. Key specifications include maximum ramp slopes of 8.33 percent (7.1 percent typical), minimum 48-inch turning spaces with maximum 2.0 percent slope (1.5 percent typical), detectable warning surfaces extending 2 feet minimum in the direction of pedestrian travel, and maximum vertical surface discontinuities of 1/4 inch at joints. All specifications comply with the Public Right-of-Way Accessibility Guidelines (PROWAG) Draft 2013, with provisions for updating to the final rule once officially adopted.
The document establishes construction standards requiring coarse broom finish transverse to ramp surface, water drainage prevention measures, removal of existing sidewalk aligned to expansion or contraction joints, and detectable warning surface installation at pedestrian street crossings, refuge islands, and railroad crossings. The guide sheet was plotted on October 30, 2024, and represents Sheet 6 of 11 from the CTDOT Highway Standards and Guide Sheets collection. These technical specifications are directly applicable to the City of Bridgeport's Citywide Sidewalk, Curb, Apron & ADA Ramp Repair and Replacement project, for which electronic bid submissions were due September 22, 2026, through the OpenGov Procurement Portal.
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Text version
(TYPE 14)
GREATER THAN 5'
GRADE BREAK TO THE BACK OF CURB
SINGLE DIRECTION PERPENDICULAR RAMP
8.33% MAX.
7.1% TYP.
RAMP SLOPE
CURBING
CURBING
NON-WALKING SURFACE
(TYPE 16)
RETURN CURB WITH NON-WALKING SURFACE
SINGLE DIRECTION PERPENDICULAR RAMP
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
48" MIN.
(TYPE 17)
NO CURB WITH NON-WALKING SURFACE
SINGLE DIRECTION PERPENDICULAR RAMP
INCLUDED WITH RAMP
SIDEWALK CURBING (TYP.)
(NO CURBING)
EDGE OF ROAD
(NO CURBING)
EDGE OF ROAD
8.33% MAX.
7.1% TYP.
RAMP SLOPE
2.0% MAX.
1.5% TYP.
TURNING SPACE
CURBING
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
48" MIN.
OF CURB THAT IS GREATER THAN 5'
GRADE BREAK TO THE BACK
GRADE BREAK
R=2' MIN. (TYP.)
NON-WALKING SURFACE
NON-WALKING SURFACE
R=2' MIN. (TYP.)
(TYPE 15)
OF CURB THAT IS 5' OR LESS
WITH GRADE BREAK TO THE BACK
SINGLE DIRECTION PERPENDICULAR RAMP
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-2019-07.
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 GUIDELNES.
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)
WARNING DETECTABLE
0" - 1/4" MAX.
LIP HEIGHT
2.0% MAX.
1.5% TYP.
TURNING SPACE
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
WARNING DETECTABLE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
48" MIN.
CURBING
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
NON-WALKING SURACE
IS 5' OR LESS
BACK OF CURB THAT
GRADE BREAK TO THE
GRADE BREAK
48" MIN.
SURFACE (SEE NOTE 6)
WARNING DETECTABLE
0" - 1/4" MAX.
LIP HEIGHT
48" MIN.
SURFACE (SEE NOTE 6)
WARNING DETECTABLE
0" - 1/4" MAX.
LIP HEIGHT
8.33% MAX.
7.1% 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 6 OF 11
CONCRETE SIDEWALK RAMPS
TRANSPORTATION
DEPARTMENT OF
CONNECTICUT
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