136-GUIDE_SHEET_-_Railroad_Crossing_Ramp(s).pdf
PDF 415 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 detailing specifications for railroad crossing ramps, prepared in conjunction with the City of Bridgeport's Citywide Sidewalk, Curb, Apron & ADA Ramp Repair and Replacement project. The guide sheet provides comprehensive technical specifications for two types of concrete sidewalk ramps at railroad crossings: Type 27 ramps without gates and Type 28 ramps with gates. The specifications establish maximum ramp slopes of 8.33 percent (7.1 percent typical), turning space requirements of 48 inches minimum, curb heights, flangeway gap specifications (3 inches maximum for freight rail tracks and 2.5 inches maximum for non-freight rail tracks), and detectable warning surface installation requirements extending 2 feet minimum in the direction of pedestrian travel and spanning the entire ramp opening. The guide sheet also addresses hot mix asphalt placement, vertical surface discontinuities not exceeding 1/8 inch, coarse broom finish requirements, water drainage, and compliance with PROWAG (Public Right-of-Way Accessibility Guidelines) 2013 draft standards. The City of Bridgeport is accepting electronic bids through its OpenGov Procurement Portal until 2:00 p.m. on Tuesday, September 22, 2026, with a question submission deadline of 5:00 p.m. on Tuesday, September 8, 2026.
The design guide sheet contains no pricing information, set-asides, incumbent data, or funding details, as it serves as a technical reference document rather than a bidding specification. All specifications comply with CTDOT design standards and PROWAG guidelines, with provisions for updates to reflect final rule changes once officially adopted. Bidders are required to submit responses electronically and must create free accounts on the OpenGov Procurement Portal at https://procurement.opengov.com/signup. Addenda will be issued in response to submitted questions and published on the procurement website, which bidders must monitor regularly for updates.
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Text version
8.33% MAX.
7.1% TYP.
RAMP SLOPE
END CURBING END CURBING
(TYPE 28)
WITH GATE
RAILROAD CROSSING RAMP
(TYPE 27)
WITHOUT GATE
RAILROAD CROSSING RAMP
2'
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
CURBING
CURBING
END
CURBING
END CURBING
48" MIN.
2.0% MAX.
1.5% TYP.
TURNING SPACE
2'
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
CURBING
END CURBING
CURBING
END CURBING
48" MIN.
2.0% MAX.
1.5% TYP.
TURNING SPACE
C R
O S S I N
GR
A
IL
R O
A D
FLANGEWAY GAP
3" MAX. FOR FREIGHT RAIL TRACKS
" MAX. FOR NON-FREIGHT RAIL TRACKS2
FLANGEWAY GAP
FLANGEWAY GAP
INCLUDED WITH RAMP
SLOPED CURBING (TYP.)
INCLUDED WITH RAMP
SLOPED CURBING (TYP.)
INCLUDED WITH RAMP
SLOPED CURBING (TYP.)
INCLUDED WITH RAMP
SLOPED CURBING (TYP.)
RAILROAD CROSSING SURFACE (TYP.)
ROADWAY
RAIL 3' MIN.
ROADWAY
RAILROAD CROSSING SURFACE (TYP.)
WITH VEHICULAR GATE
RAILROAD FLASHING LIGHTS,
FLANGEWAY GAP
RAIL
RAIL
DETECTABLE WARNING SURFACE.
TRANSITION TO ROADWAY PROFLE BEHIND
RAILROAD CROSSING SURFACE (TYP.) COMPLETE
SECTION
SLOPE
SLOPE
RAIL
RAIL
SLOPE
AS DIRECTED BY THE ENGINEER
HOT MIX ASPHALT (HMA)
AS DIRECTED BY THE ENGINEER
HOT MIX ASPHALT (HMA)
AS DIRECTED BY THE ENGINEER
HOT MIX ASPHALT (HMA) AS DIRECTED BY THE ENGINEER
HOT MIX ASPHALT (HMA)
AS DIRECTED BY THE ENGINEER
HOT MIX ASPHALT (HMA)
AS DIRECTED BY THE ENGINEER
HOT MIX ASPHALT (HMA)
SLOPE
RAILROAD PEDESTRIAN GATE
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
3' MIN.
2.0% MAX.
1.5% TYP.
2.0% MAX.
1.5% TYP.
2'
CENTERLINE OF TRACK
CENTERLINE OF TRACK
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
8.33% MAX.
7.1% TYP.
RAMP SLOPE
GENERAL NOTES:
¼
OF THESE ARE PRESENT.
FLASHING-LIGHT SGNALS, OR GRADE CROSSING ( CROSSBUCK) SIGN IF ANY
LOCATED AT LEAST 2 FEET UPSTREAM FROM THE AUTOMATIC GATE,
10. THE DOWNSTREAM EDGE OF THE DETECTABLE WARNNG STRIP SHALL BE
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
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
SURFACE (SEE NOTE 6)
DETECTABLE WARNING
12' MIN. TO 15' MAX.
C R
O S S I N
GR
A
IL
R O
A D
(CROSSBUCK) SIGN
AND/OR GRADE CROSSING
FLASHING-LIGHT SIGNALS
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 10 OF 11
CONCRETE SIDEWALK RAMPS
TRANSPORTATION
DEPARTMENT OF
CONNECTICUT
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