118-GUIDE_SHEET_-_Parallel_&_Perpendicular_Ramp(s).pdf
PDF 314 KB Posted
- Solicitation number
- CWB014279
- Issued by
- Fairfield County, Bridgeport City, Connecticut
About this file
This is a Connecticut Department of Transportation (CTDOT) design standard guide sheet for concrete sidewalk ramps, specifically addressing parallel and perpendicular ADA-compliant ramp configurations. The document establishes technical specifications for curb ramp construction across Connecticut municipalities, including the City of Bridgeport. Key specifications include maximum ramp slopes of 8.33 percent with a typical slope of 7.1 percent, minimum turning spaces of 48 to 60 inches depending on ramp type, detectable warning surfaces extending a minimum of 2 feet in the direction of pedestrian travel, and vertical surface discontinuities at joints not exceeding 1/4 inch. The guide sheet presents ten distinct ramp types (Types 8, 9, 10a, and 10b detailed) for various constrained and unconstrained site conditions. All specifications comply with the 2013 Public Right-of-Way Accessibility Guidelines (PROWAG) draft standards and are designed to ensure water drainage and pedestrian safety.
The document references CTDOT Engineering Directive ED-2019-7 and establishes that sidewalk ramps must have a coarse broom finish transverse to the slope, with removal of existing sidewalk for new installations required to the nearest inch. The guide sheet was last updated on October 30, 2024, and was prepared for implementation across Connecticut towns. While this design standard document itself does not contain pricing, set-asides, or funding information, it serves as the technical specification baseline for the related City of Bridgeport Citywide Sidewalk, Curb, Apron & ADA Ramp Repair and Replacement project, with bids due by September 22, 2026, through the City's OpenGov e-Procurement portal.
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Text version
8.33% MAX.
7.1% TYP.
RAMP SLOPE
2.0% MAX.
1.5% TYP.
SPACE
TURNING
60" MIN.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
48" MIN.
CURBING
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
RAMP (TYP.)
INCLUDED WITH
SLOPED CURBING
NON-WALKING SURFACE
48" MIN.
(TYPE 9)
ON TWO (2) OR MORE SIDES
TURNING SPACE CONSTRAINED
PARALLEL RAMP WITH
48" MIN. (REVEAL SHALL NOT EXCEED 12")
SIDEWALK CURBING (OPTIONAL)
8.33% MAX.
7.1% TYP.
RAMP SLOPE
2.0% MAX.
1.5% TYP.
SPACE
TURNING
48" MIN.
48" MIN.
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
CURBING
NON-WALKING SURFACE
MIN.
48"
(TYPE 10a)
CONSTRAINED ON ONE SIDE
WITH TURNING SPACE
PARALLEL RAMP
R=2' MIN.
GENERAL NOTES:
PEDESTRIAN ACCESS ROUTE.
9. CURB RAMPS SHALL BE CONSTRUCTED SO THAT WATER WILL NOT ACCUMLATE WITHIN THE
SEE ENGINEERING DIRECTIVE ED-2019-7.
8. CTDOT DESIGN STANDARD USE THE PUBLIC RIGHT-OF-WAY ACCESSIBILITY GUIDELINES (PROWAG)
WILL BE MADE TO COMPLY WITH PROWAG FINAL RULE ONCE OFFICIALLY THE LAW.
7. ALL GUIDESHEET VALUES COMPLY WITH PROWAG DRAFT 2013 GUIDELINES. UPDATED VALUES
TRAVEL AND SPAN THE ENTIRE RAMP OPENING.
6. DETECTABLE WARNING SURFACES SHALL EXTEND 2 FEET MIN. IN THE DIRECTION OF PEDESTRIAN
OR HIGHWAYS.
STREET CROSSINGS, PEDESTRIAN REFUGE ISLANDS AND RAILROAD CROSSINGS ALONG STREETS
5. DETECTABLE WARNING SURFACES SHALL BE INSTALLED ON SIDEWALK RAMPS AT PEDESTRIAN
REQUIRE THE RAMP LENGTH TO EXCEED 15 FEET.
4. THE RUNNING SLOPE OF THE CURB RAMP SHALL BE 8.33 PERCENT MAXIMUM BUT SHALL NOT
EXPANSION OR CONTRACTION JOINT.
3. REMOVAL OF EXISTING SIDEWALK FOR NEW RAMP INSTALLATIONS SHALL BE TO THE NEAREST
INCH.4
2. VERTICAL SURFACE DISCONTINUITIES AT JOINTS SHALL NOT EXCEED
1. SIDEWALK RAMPS SHALL HAVE A COARSE BROOM FINISH TRANSVERSE TO THE SLOPE OF THE RAMP.
SURFACE (SEE NOTE 6)
WARNING DETECTABLE
0" - 1/4" MAX.
LIP HEIGHT
SURFACE (SEE NOTE 6)
WARNING DETECTABLE
0" - 1/4" MAX.
LIP HEIGHT
8.33% MAX.
7.1% TYP.
RAMP SLOPE
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
(TYPE 8)
WITH 48" BY-PASS
PERPENDICULAR RAMP
MAX.
10%
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
MAX.
10%
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
0" - 1/4" MAX.
LIP HEIGHT
NON-WALKING SURFACE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
2.0% MAX.
1.5% TYP.
SPACE
TURNING
48" MIN.
48" MIN.
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
CURBING
CURBING
NON-WALKING SURFACE
MIN.
60"
SLOPED CURBING INCLUDED WITH RAMP
R=2' MIN.
(REVEAL SHALL NOT EXCEED 12")
SIDEWALK CURBING
(TYPE 10b)
CONSTRAINED ON TWO (2) OR MORE SIDES
WITH TURNING SPACE
PARALLEL RAMP
SURFACE (SEE NOTE 6)
WARNING DETECTABLE
0" - 1/4" MAX.
LIP HEIGHT
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 4 OF 11
CONCRETE SIDEWALK RAMPS
TRANSPORTATION
DEPARTMENT OF
CONNECTICUT
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