ACEC & IDOT REQUIRED DESIGN & DOCUMENTATION...

ACEC & IDOT

REQUIRED DESIGN &

DOCUMENTATION FOR

ADA COMPLIANT SIDEWALK

CURB RAMPS

DISTRICT 1 TRAINING

Instructors:

Steve Schuessler, P.E.

SE3, LLC

Pedestrian Access Routes / Curb Ramps / Detectable Warnings

Jim McNally, P.E.

Baxter & Woodman

Pedestrian Street Crossings / MOT / Parking / Design Considerations

INTRODUCTION

Americans with Disabilities Act (ADA)

Signed into law on July 26, 1990

ADA requires that buildings and facilities be accessible and usable by people with disabilities

Access Board established ADA guidelines in 1991 & again in 2004

Public Rights-of-Way Accessibility Guidelines (PROWAG)

Published in Federal Register July 26, 2011

Supplemented February 13, 2013 to address shared use paths

On January 23, 2016, the FHWA issued a memorandum recognizing that PROWAG standards “are the currently recommended best practices and can be considered the state of practice that could be followed for areas not fully addressed by the present ADAAG standards.”

BACKGROUND

MAINTENANCE

-Do not need to address PROWAG

Chip Seals

Fog Seals

Scrub Sealing

Crack Fill ing and Sealing

Joint Crack Seals

Slurry Seals

Diamond Grinding

Joint Repairs

Pavement Patching

Surface Sealing

Dowel Bar Retrofit

Spot High-Friction Treatments

PROJECT SCOPE

ALTERATIONS

-Triggers use to address PROWAG

Addition of new layer of Asphalt

Mill & Fill / Mill & Overlay

Cape Seals

New Construction

Hot In-Place Recycling

Open-Graded Surface Course

Microsurfacing / Thin-Lift Overlay

Rehabilitation & Reconstruction

R302 PEDESTRIAN ACCESS ROUTES (PAR)

R302.2 PEDESTRIAN ACCESS ROUTE (PAR)

Pedestrian Access Route (PAR)

PAR connects pedestrian elements and facilities required to be accessible.

PAR shall consist of one or more of the following components▪ Sidewalks

▪ Curb Ramps

▪ Sidewalk Ramps

▪ Street/Rail Crossings

▪ Pedestrian Overpass / Underpass

▪ Elevators / Lifts

▪ Doors / Doorways / Gates

All components shall comply with applicable PROWAG provisions

Stairways and escalators shall not be part of a PAR.

R302.3 CONTINUOUS WIDTH

R302.3 CONTINUOUS WIDTH

R302.3.2 CONTINUOUS WIDTH

R302.3 CONTINUOUS WIDTHR302.3.1 MEDIANS AND PEDESTRIAN REFUGE ISLANDS

R302.4 PASSING SPACES

200’ 5’5’4’

R302.5 GRADE

The grade of the Pedestrian Access Route (PAR) shall not exceed the

general grade established for the adjacent street or highway. Where

PAR is not contained with a street or highway, the grade of PAR shall

be 5% max.

R302.6 CROSS SLOPE

2%2%

PAR

R302.6 CROSS SLOPE - DRIVEWAYS

R302.7 - SURFACES

Firm, Stable, Slip Resistant

Vertical surface discontinuities shall be 0.25 in max

Beveled vertical surface discontinuities shall be 0.5 in max with a

slope not steeper than 50%

MAX

¼” ½”MAX

VERTICAL BEVELED

R302.7.3 HORIZONTAL OPENINGS

Horizontal opening shall not be more than 0.5 in

Elongated opening shall be placed perpendicular to direction of travel

R302.7.3 HORIZONTAL OPENINGSFLANGEWAY GAPS AT PEDESTRIAN RAIL CROSSINGS

R304 CURB RAMPS AND BLENDED TRANSITIONS

R304.5.3 CROSS SLOPE

R304.5.3 CROSS SLOPE

R304.5.4 COUNTER SLOPE

CROSSWALK TRANSITION

Transition from Lower Landing to Crosswalk

A curb ramp at a cross slope of 2% is allowed to transition to a crosswalk at a cross

slope of 5% at a signalized intersection at the lowering landing area because you are

going from one compliance to the next and the level landing requirements are not

required in this case.

2%

5%

R304.5.2 GRADE BREAKS

R304.5.5 CLEAR SPACE

R305 CURB RAMPS

Types of Curb Ramps

Perpendicular (424001)

Parallel Corner (424011)

Parallel Mid-Block (424016)

Combined Curb Ramps

Blended Transitions / Depressed

Corners (424021)

Diagonal (424006)

R304 CURB RAMPS & BLENDED TRANSITIONS

R304.2.3 FLARED SIDES & SIDE CURB

R304.3.1 TURNING SPACE

R304.3.1 TURNING SPACE

R304.2.2 RUNNING SLOPE / GRADE BREAK

Differences between IDOT

Highway Standards and PROWAG

Lower Landing

IDOT: 1:50 Max.

PROWAG: 5% or Roadway Grade

Upper Landing

IDOT: Required

PROWAG: Not Required

Try to Follow Highway Standard

First, then meet PROWAG

No deviation required if PROWAG

requirements are met

R304.2.2 RUNNING SLOPE / GRADE BREAK

R304 CURB RAMPS & BLENDED TRANSITIONS

R304 CURB RAMPS & BLENDED TRANSITIONS

R304.4.1 RUNNING SLOPE

R304 CURB RAMPS & BLENDED TRANSITIONS

R305 DETECTABLE WARNING SURFACES

Dome Size

surfaces shall consist of truncated

domes aligned in a square or radial

grid pattern.

Truncated domes shall have a base

diameter of 0.9” min and 1.4” max,

top diameter of 50% to 65% of the

base diameter.

R305.1.1 DETECTABLE WARNING SURFACES

Dome Spacing

Truncated domes shall have a

center-to-center spacing of 1.6” and

2.4” maximum

Base-to-base spacing of 0.65” min

measured between the most

adjacent domes

0.2”

0.9” – 1.4”

1.6”-2.4”

1.6”-2.4”

0.65”

R305.1.3 DETECTABLE WARNING SURFACESCONTRAST

R305.2.4 DETECTABLE WARNING SURFACESPLACEMENT

2’ wide

Full width

At the Back of Curb or

Properly oriented to grade break

Add pay item Detectable Warnings (Special) and

the special provision Detectable Warnings (Special)

in City of Chicago for curb ramp improvements to

ensure cast iron detectable warnings are used.

≤ 5’ Setback > 5’ Setback

R305.2 DETECTABLE WARNING SURFACESPLACEMENT

R305.2 DETECTABLE WARNING SURFACESPLACEMENT

Incorrect P lacement– Not Ful l Width Incorrect p lacement – Not Ful l Width Incorrect P lacement – Not at BOC

R305.2.4 DETECTABLE WARNING SURFACESPLACEMENT

R305.2.4 DETECTABLE WARNING SURFACESDRIVEWAYS & ALLEYS

DETECTABLE WARNINGS AT DRIVEWAYS & ALLEYS

BDE 58-1.09 (c) 2. Location. “… Detectable warnings are also

required where sidewalks cross al leys and commercial entrances

where traff ic control devices (e.g., yield signs, stop signs or

signals) are present.”

Guidance has been given to use discretion when:

▪ Some driveways with a large amount of traff ic should have

detectable warnings regardless of traff ic control devices.

R306 PEDESTRIAN STREET CROSSINGS

R306 PEDESTRIAN STREET CROSSINGS

Refer to the MUTCD Section 3 for guidance on when or how to mark

crosswalks

Curb ramps and blended transitions must be wholly contained within

the pedestrian street crossing

Crosswalk markings should be located so that the curb ramps are

within the extension of the crosswalk markings

306 PEDESTRIAN STREET CROSSINGS

R306 PEDESTRIAN STREET CROSSING

R209 PEDESTRIAN PUSHBUTTONS

R3R209 PEDESTRIAN PUSHBUTTONS

R209 PEDESTRIAN PUSHBUTTONS

Front of push button shall not be further than

10” from the paved surface

If post foundation is too large or too far from

clear space an extension might be needed.

▪ Extensions – 6”, 12” or 18”

No new poles will be added on a resurfacing or

stand alone ADA contract.

R209 PEDESTRIAN PUSHBUTTONS

Example of poor placement Example of push

button extension

MAINTENANCE OF PEDESTRIAN

TRAFFIC DURING CONSTRUCTION

Temporary Sidewalks

Width

▪ Same as existing but minimum 4 ft.

▪ Wider should be considered w/high

ped volume

▪ If < 5 ft – Provide 5’x5’ passing space

every 200 ft.

Surface

▪ Firm, stable & slip resistant

IDOT WORK ZONE TRAFFIC CONTROL

Same-side alternate routes

▪ Extra crossing increase risk

Covers temporary facilities

▪ Street fairs, block parties, farmers

markets

Follow Sidewalk, Corner Or

Crosswalk Closure Standard (701801)

Channelizing Devices

Section 6F.63 MUTCD

Devices shall be detectable

▪ Continuous dectable bottom/top surfaces

▪ Bottom shall be no higher than 2 in

▪ Top shall be no lower than 32 in

IDOT WORK ZONE TRAFFIC CONTROL

IDOT WORK ZONE TRAFFIC CONTROL

Acceptable examples Not Acceptable!

ACCESSIBLE ON-STREET PARKING

TYPES OF ACCESSIBLE PARKING

On Street or Off Street

Marked vs. Unmarked

Metered or Unmetered

Standards

▪ Illinois Accessibility Code

▪ ADAAG

▪ PROWAG

▪ MUTCD

▪ BLRS/BDE Policy Manuals

TYPES OF ACCESSIBLE PARKING

Number of accessible

spaces is based on total

marked or metered spaces

on block perimeter

DESIGN CONSIDERATIONS

FIELD REVIEW

CLEAR WIDTH

UTILITIES

ENTRANCES REVIEW SURVEY

- During field review pay close

attention to every ramp

- Look for items not picked up in

survey such as landscaping

sprinklers

- Take pictures of utilities to identify

ownerPUSH BUTTON LOCATION

EXISTING ROW

It is important to know where

the existing ROW is located

CARRIAGE WALKS

Do they need to meet PROWAG?

Yes, if they lead to a crosswalk

No, if they do not lead to a crosswalk.

However, follow section R308 of

PROWAG if Transit Stop

RAISED SHOULDERS/PATHS

Do the shoulders need to meet PROWAG?

If the shoulders are intended as the pedestrian

accommodation, YES.

▪ A good indicator in the absence of local agency coordination is if

they have ramps at the corner street crossings.

▪ We strongly encourage coordination with the local agency to make a

determination if time allows.

If no ramp exist, they are not required to meet

PROWAG.

Cycle tracks would require meeting bike requirements

UTILITY CONFLICTS

Identify potential util ity conflicts early and

notify IDOT PM

Utilit ies within curb ramp should be relocated

whenever possible

Detectable warning portion should be free of

any util it ies

6” valve boxes are to be listed in the status of

util it ies special provision in order to be

adjusted by the municipality. Provide pay

i tem for 24” frame and lids to be adjusted.

This should not be listed in the SP.

If handholes are impacted use pay item

“REBUILD EXISTING HANDHOLE” since

handholes cannot be adjusted

Is Construction Tolerance allowed?

▪ No

IDOT is currently designing for:

▪ 1.5% Cross Slope

▪ 1:14 (7.14%) Ramp Slopes

CONSTRUCTION TOLERANCES

CONSTRUCTION LAYOUT SPECIAL FOR RESURFACING WITH

ADA AND STAND ALONE ADA (D-1)

Include this special provision for resurfacing projects with ADA ramps or

stand-alone ADA ramp projects.

▪ Use pay item X0320050 CONSTRUCTION LAYOUT (SPECIAL)

▪ Listed in D1 Special Provisions Checklist

For Reconstruction/Widening contracts include pay item Z0013798

CONSTRUCTION LAYOUT LSUM 1 instead.

EARTH EXCAVATION QUANTITY DETERMINATION

Estimated at 0.01 cubic yard per 1 square foot of sidewalk when the

ground is flat

Typically 150-200 SF of sidewalk removal and replacement will occur per

corner

HANDRAILS

AVOID! AVOID! AVOID!

▪ Roadway Hazard

▪ Maintenance Liability

Required on sidewalk ramps with rise > 6”

Both sides of Ramps (R409.2)

Continuity (R409.3)

▪ Continuous within full ramp run

34” ≤ Top of gripping surface ≤ 38” above

walking/ramp surface

Handrails shall extend 12” min beyond ramp runs

PHASE I ADA DETAILS

PHASE II ADA DETAILS

RECONSTRUCTION AND WIDENING

PHASE II ADA DETAILS

RECONSTRUCTION AND WIDENING

PHASE II ADA DETAILS

RESURFACING AND ADA STAND ALONE CONTRACTS

PHASE II ADA DETAILS

RESURFACING AND ADA STAND ALONE CONTRACTS

PHASE II ADA DETAILS

RESURFACING AND ADA STAND ALONE CONTRACTS

MEP FORM (BDE 3101) & APPROVAL PROCESS

MEP = Maximum Extent Practicable. Document waiver requests to FHWA/BDE in the planning/design phase.

MEP’s will not be approved for Phase I or Temporary Construction situations.

MEP’s typically submitted for running slope, cross slope, width (PAR), turning space and lowering landing

MEP not required for curb ramp transit ion area between a 2% cross sloped ramp to a 5% cross sloped crosswalk at a traffic signal.

MEP forms are reviewed by BDE at the same time as the Monthly FWHA meeting. To have your forms reviewed in a timely manner email the MEP forms to the District ADA coordinator 2 weeks in advance of the FHWA meeting. District 1 – DOT.D1.ADA@Illinois.gov. In addition email should be sent to Bureau of Programming’s Geometrics Unit Head requesting BDE to review the MEPS. Submit up to 50 MEP’s at a time.

MEP FORM (BDE 3101) & APPROVAL PROCESS

On an ADA resurfacing contract, an

MEP form was submitted since the

PAR clearance width was less than

4’ wide at the traffic signal pole (2’)

and the street l ight (3.3’). Traffic

signal and lighting adjustments

were outside the scope of the

resurfacing contract.

MEP FORM (BDE 3101) & APPROVAL PROCESS

MEP FORM (BDE 3101) & APPROVAL PROCESS

MEP FORM (BDE 3101) & APPROVAL PROCESS

MEP FORM (BDE 3101) & APPROVAL PROCESS

QUESTIONS??

D1 - ADA Coordinator DOT.D1.ADA@Illinois.gov