m-608-1-curb-ramps.pdf

CURB RAMP GENERAL NOTES:

(D IN NEW CONSTRUCTION OR FULL-DEPTH RECONSTRUCTION, PROVIDE A SEPARATE CURB RAMP FOR EACH MARKED OR UNMARKED PEDESTRIAN STREET CROSSING.

CURB RAMPS SHALL BE CONTAINED WHOLLY WITHIN THE WIDTH OF THE PEDESTRIAN STREET CROSSING OR CROSSWALK THEY SERVE, OR AS SHOWN ON THE

CONTRACT PLANS.

(D ALTERATIONS ARE DEFINED AS CHANGES TO AN EXISTING HIGHWAY THAT AFFECT PEDESTRIAN ACCESS, CIRCULATION, OR USE. ALTERATIONS INCLUDE, BUT ARE NOT LIMITED TD, RESURFACING, REHABILITATION, RECONSTRUCTION, CURB RAMP RETROFITS, HISTORIC RESTORATION, OR CHANGES OR REARRANGEMENT

TO STRUCTURAL PARTS OR ELEMENTS OF A PEDESTRIAN FACILITY.

0) A WALKABLE SURFACE IS DEFINED AS A PAVED SURFACE ADJACENT TO A CURB RAMP OR TURNING SPACE, WITHOUT RAISED OBSTACLES, THAT COULD BE

MISTAKENLY TRAVERSED BY A USER WHO IS VISUALLY IMPAIRED.

(D IN ALTERATIONS, WHERE AN EXISTING PHYSICAL CONSTRAINT PREVENTS PROVIDING A SEPARATE CURB RAMP FOR EACH PEDESTRIAN STREET CROSSING, A SINGLE DIAGONAL RAMP (ON THE APEX) SHALL BE PERMITTED TO SERVE BOTH PEDESTRIAN STREET CROSSINGS. THE USE OF A SINGLE DIAGONAL RAMP SHALL BE APPROVED BY THE ENGINEER PRIOR TO CONSTRUCTION. DIAGONAL RAMPS ARE NOT ACCEPT ABLE IN NEW CONSTRUCTION OR FULL -DEPTH

RECONSTRUCTION.

@ DETECTABLE WARNINGS SURFACES (DWS) ARE INTENDED TO INDICATE THE BOUNDARY BETWEEN A PEDESTRIAN ROUTE AND VEHICULAR ROUTE WHERE THERE IS A FLUSH RATHER THAN CURBED CONNECTION. DWS ARE NOT INTENDED TO PROVIDE WAYFINDING. DWS SHALL BE PROVIDED AT THE FOLLOWING LOCATIONS;

I. CURB RAMPS, BLENDED TRANSITIONS, AND DEPRESSED CORNERS AT PEDESTRIAN STREET CROSSINGS;

2. PEDESTRIAN REFUGE ISLANDS (6 FEET IN WIDTH OR GREATER);

3.BOARDING PLATFORMS AT TRANSIT STOPS WHERE THE EDGE OF THE PLATFORM IS NOT PROTECTED TO PEDESTRIAN CROSS TRAFFIC; AND

4. BOARDING AREAS AT SIDEWALK OR STREET LEVEL TRANSIT STOPS WHERE THE AREA IS NOT PROTECTED TO PEDESTRIAN CROSS TRAFFIC.

@ DETECTABLE WARNING SURFACES SHALL CONTRAST VISUALLY WITH THE ADJACENT GUTTER, HIGHWAY, OR PEDESTRIAN ACCESS ROUTE SURFACE, EITHER LIGHT-ON-DARK OR DARK-ON-LIGHT. FEDERAL YELLOW COLOR IS PREFERRED, HOWEVER, OTHER COLORS MAY BE USED IF APPROVED BY THE ENGINEER.

(J) IN ALTERATIONS, TO AVOID CHASING GRADE INDEFINITELY ON STEEP ROADWAYS, A CURB RAMPS LENGTH IS NOT REQUIRED TO EXCEED 15 FEET REGARDLESS

OF THE RESULTING RAMP RUNNING SLOPE.

@ ALL SLOPES ARE MEASURED WITH RESPECT TO A LEVEL PLANE.

@ DRAINAGE STRUCTURES, TRAFFIC SIGNAL EQUIPMENT, OR OTHER OBSTRUCTIONS SHALL NOT BE INSTALLED ON THE CURB RAMP, OR TURNING SPACE AREAS.

@) IN NEW CONSTRUCTION, PULL BOXES, METER BOXES, MAINTENANCE HOLE COVERS, VAULT LIDS, OR SIMILAR, SHALL NOT BE CONSTRUCTED WITHIN ANY PART OF CURB RAMP OR TURNING SPACE. IN ALTERATIONS, WHERE THESE ITEMS CANNOT BE RELOCATED OUTSIDE OF THE CURB RAMP OR TURNING SPACE, THEY MUST NOT CREATE A VERTICAL DISCONTINUITY GRATER THAN 1/2 INCH. ANY VERTICAL DISCONTINUITY BETWEEN 1/4 INCH AND 1/2 INCH SHALL BE BEVELED WITH A SLOPE NOT STEEPER THAN 1V:2H. THE BEVEL SHALL BE APPLIED ACROSS THE ENTIRE SURFACE DISCONTINUITY.

@ CONSTRUCTION OF ANY REQUIRED PEDESTRIAN CURB SHALL BE INCLUDED IN THE BID PRICE OF THE CONCRETE CURB RAMP AND WILL NOT BE PAID FOR

SEPARATELY.

@ ALL CURB RAMP JOINTS AND GRADE BREAKS SHALL BE FLUSH (0'-1/8"). THE JOINT BETWEEN THE ROADWAY SURFACE AND THE GUTTER PAN SHALL BE FLUSH.

@ THE CONTRACTOR SHALL VERIFY REMOVAL LIMITS ARE SUFFICIENT TO PROVIDE POSITIVE DRAINAGE, MAINTAIN EXISTING DRAINAGE PATTERNS, AND AVOID

PONDING IN THE FINAL CONFIGURATION.

@ FLARED SIDE SLOPES MAY EXCEED 10.0% ONLY WHERE THEY ABUT A NON-WALKABLE SURFACE, OR WHERE THE ADJACENT RAMP SURFACE IS BLOCKED TO

PEDESTRIAN TRAFFIC.

@) THE CHANGE IN GRADE AT THE BOTTOM OF THE CURB RAMP SHALL NOT EXCEED AN ALGEBRAIC DIFFERENCE OF 13.33%. THE COUNTER SLOPE OF THE GUTTER AT THE FOOT OF A RAMP, TURNING SPACE, OR BLENDED TRANSITION SHALL NOT EXCEED 5.0%.

(!§) GRADE BREAKS AT THE TOP AND BOTTOM OF RAMP RUNS SHALL BE PERPENDICULAR TO THE DIRECTION OF THE RAMP RUN.GRADE BREAKS SHALL NOT BE PERMITTED ON THE SURFACE OF THE RAMP RUN OR TURNING SPACE.SURFACE SLOPES THAT MEET AT GRADE BREAKS SHALL BE FLUSH.

@ A BROOM FINISH, WITH SWEEPS PERPENDICULAR TO THE DIRECTION OF PEDESTRIAN TRAFFIC, SHALL BE APPLIED TO ALL RAMP AND TURNING SPACE SURFACES.

@ IN ALTERATIONS, WHERE A RAMP OR TURNING SPACE MUST TIE INTO AN EXISTING GRADE THAT CANNOT BE ALTERED, THE RAMP OR TURNING SPACE MAY BE WARPED TO TRANSITION TO THE REQUIRED CROSS SLOPE. THE TRANSITION TO THE REQUIRED CROSS SLOPE SHALL BE SPREAD EVENLY OVER THE LENGTH OF THE RAMP OR TURNING SPACE TO MINIMIZE THE DEGREE OF WARPING. THE RATE OF CHANGE ON A RAMP OR TURNING SPACE SHALL NOT

EXCEED 3% PER LINEAR FOOT.

@) DESIGN AND CONSTRUCT CURB RAMPS, TURNING SPACES, AND FLARE SLOPES WITH THE FLATTEST SLOPES POSSIBLE. THE SLOPES INDICATED IN THESE DETAILS SHOW THE MAXIMUM SLOPES ALLOWABLE. PREFERRED VALUES TO BE USED DURING DESIGN, LAYOUT, AND CONSTRUCTION ARE:

- RAMP RUNNING SLOPE 7.5%

- RAMP CROSS SLOPE 1.5%

- TURNING SPACE RUNNING SLOPE 1.5%

- TURNING SPACE CROSS SLOPE 1.5%

- FLARE SLOPE 8.0-9.0% GENERAL NOTES & PAY AREAS

@) WHERE SNOW REMOVAL EQUIPMENT WILL BE USED TO CLEAR THE PEDESTRIAN ACCESS ROUTE, CONSULT THE ENGINEER PRIOR TO CONSTRUCTION TO ENSURE THE WIDTH AND THICKNESS OF CURB RAMPS IS SUFFICIENT TO ACCOMODATE SUCH EQUIPMENT.

@ PROVIDE EXPANSION JOINT MATERIAL 1/2" THICK WHERE CURB RAMPS ADJOIN ANY RIGID PAVEMENT, OR STRUCTURE. THE TOP OF THE JOINT FILLER MATERIAL SHALL BE FLUSH WITH ADJOINING CONCRETE SURFACES. THE EXPANSION JOINT MATERIAL SHALL EXTEND FOR THE FULL DEPTH OF THE CONCRETE SURFACE.

@ PROVIDE TIE BAR REINFORCING BETWEEN INDEPEDENTL Y POURED CONCRETE CURB RAMPS OR TURNING SPACES AND CURB AND GUTTER. DRILL AND GROUT NO. 4 12 INCH LONG REINFORCEMENT BARS (EPOXY COATED) AT 18 INCHES CENTER TO CENTER MINIMUM.

CURB RAMP PAY AREAS

TYPE 1 TYPE 2 - TWO RAMPS TYPE 2 - ONE RAMP

TYPE 2 - DIRECTIONAL BLENDED TRANSITION DEPRESSED CORNER

PERCENT SLOPE 1.0% 2.0% 5.0% 7.1% 8.3% 10.0%

EQUIVALENT RUN/RISE 100:1 50:1 20:1 14:1 12:1 10:1

SLOPE TABLE

COMBINATION

Comments Colorado Department of Transportation Com uter File Information Sheet Revisions

Creation Date: 07 /31/19 Date:

STANDARD PLAN NO.

~ 2829 West Howard Place

~:=~~ ---------------- ~ g~~:er~~'o3rd86i~°: t-------,1--------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1-----+-----------1 Project Development Branch JBK

Designer Initials: JBK

Last Modification Date: 07 /31/19

Detailer Initials: LT A

CAD Ver.: MicroStation VB Scale: Not to Scale Units: English

CURB RAMPS M-608-1

Standard Sheet No. 1 of 10

Issued by the Project Development Branch: July 31, 2019 Project Sheet Number:

PERPENDICULAR RAMP

(TYPICAL)

CURB & GUTTER

PERPENDICULAR RAMP

(WITH VERTICAL RETURN CURB)

CURB & GUTTER

SEE NOTE 5 ON SHEET 9

PERPENDICULAR RAMP

(DIRECTIONAL)

PERPENDICULAR RAMP NOTES

(D RAMP WIDTH - PROVIDE 5 FT. OR GREATER WHERE POSSIBLE. IF SITE CONSTRAINTS DO NOT PERMIT, PROVIDE 4 FT. MINIMUM. RAMPS SERVICING SHARED USE PATHS SHALL MATCH THE WIDTH OF

THE PATH.

TURNING

SPACE CURB RAMP

FLAT (SLOPE = 0%)

TURNING

SPACE

..... ,..___ (D RAMP RUNNING SLOPE - 8.3% MAX.

4'MIN.

2% MAX.

'" '" CONCRETE

SIDEWALK

TURNING

SPACE

4' MIN.

VARIES (L)

~37. MAX.

SECTION A-A

2' MIN.

DETECTABLE

WARNING

SURFACE

CURB RAMP

VARIES (L)

2' MIN.

6" TO 8"

• TOP OF

'/. PAVEMENT

!Jif,.'/. . --

GUTTER

GRADE BREAK

VARIES

CH = Curb Height RS = Ramp Slope

RAMP LENGTH (L)

ELEVATION INCREASE

CAUSED BY SIDEWALK

CROSS-SLOPE

ACS = Adjacent Sidewalk Cross-Slope

L = CH

(RS - ACS)

EXAMPLE: CH = 6" (0.5 ft.), RS = 7 .5% (0.075), ACS = 1.5% (0.015) L = 0.5/(0.075-0.015) = 8.3 ft.

DETAIL A - RAMP LENGTH

DEJ~Jj:GLE 2%

SURF ACE PREF. D

SIDEWALK

'" '" CONCRETE

SIDEWALK

SECTION 8-8

Com uter File Information Creation Date: 07 /31/19

Designer Initials: JBK

Last Modification Date: 07 /31/19

Detailer Initials: LT A

CAD Ver.: MicroStation VB Scale: Not to Scale Units: English

GUTTER

GRADE BREAK

GRADE BREAK

Date:

TURNING SPACE CD©®

DETECTABLE WARNING SURFACE

(DWS)

TYPE 1 PERPENDICULAR CURB RAMPS

Colorado Department of Transportation Sheet Revisions Comments ~ 2829 West Howard Place

~:=~~ ---------------- ~ g~~:er~~'o3rd86i~°: t-------,1--------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1-----+-----------1 Project Development Branch JBK

CD TURNING SPACE RUNNING SLOPE - 2.0% MAX. TURNING SPACE RUNNING SLOPE IS MEASURED IN THE SAME

DIRECTION AS THE RAMP RUNNING SLOPE.

RAMP AND TURNING SPACE CROSS SLOPE - 2.0% TYPICAL. AT CROSSINGS WITHOUT YIELD OR STOP CONTROL, OR WITH A SIGNAL WHERE VEHICLES CAN PROCEED THROUGH THE INTERSECTION WITHOUT SLOWING OR STOPPING, THE CROSS SLOPE OF RAMPS AND TURNING SPACES MAY EQUAL THE HIGHWAY GRADE. AT MIDBLOCK PEDESTRIAN STREET CROSSINGS THE RAMP AND TURNING SPACE CROSS SLOPE MAY EQUAL THE

HIGHWAY GRADE.

@ TURNING SPACE DIMENSIONS - PROVIDE A TURNING SPACE AT THE TOP OF PERPENDICULAR RAMPS WITH A WIDTH EQUAL TO THE WIDTH OF THE CURB RAMP. TURNING SPACE LENGTH MUST BE 4 FT. MINIMUM, MEASURED IN THE DIRECTION OF THE RAMP RUN. WHEN A TURNING SPACE IS CONSTRAINED AT THE BACK OF

SIDEWALK, INCREASE LENGTH TO 5 FT. MINIMUM IN THE DIRECTION OF THE RAMP RUN.

@ RAMP ALIGNMENT - RAMPS SHALL BE ALIGNED TO BE FULLY CONTAINED WITHIN THE CROSSWALK OR STREET CROSSING THEY SERVE. PROVIDE ONE RAMP FOR EACH STREET CROSSING DIRECTION. IN AL TERATIDNS, WHERE EXISTING PHYSICAL CONSTRAINTS PREVENT PROVIDING ONE CURB RAMP FOR EACH CROSSING DIRECTION, A SINGLE DIAGONAL CURB RAMP (ON THE APEX OF A CORNER) SHALL BE PERMITTED TO SERVE BOTH PEDESTRIAN STREET CROSSINGS. IF A DIAGONAL RAMP IS USED, A CLEAR SPACE 4 FT.X 4FT.MUST BE PROVIDED AT THE BASE OF THE RAMP. THE CLEAR SPACE MUST BE WITHIN BOTH CROSSWALKS AND WHOLLY OUTSIDE OF ANY ADJACENT VEHICULAR TRAVEL LANES. DIAGONAL RAMPS ARE NOT

ACCEPT ABLE IN NEW CONSTRUCTION, OR FULL -DEPTH RECONSTRUCTION.

(}) RAMP LENGTH - PERPENDICULAR RAMP LENGTH IS DEPENDENT UPON THE RAMP SLOPE, HEIGHT OF CURB, AND ADJACENT SIDEWALK CROSS-SLOPE WHICH MUST BE INTERCEPTED. SEE DETAIL A FOR CALCULATING RAMP LENGTH WHEN CHASING SIDEWALK CROSS-SLOPE. WHERE TERRAIN IS SLOPING A RAMP IS NOT REQUIRED TO

CHASE GRADE MORE THAN 15 FT. REGARDLESS OF THE RESULTING RAMP SLOPE.

@ RAMP FLARES - WHERE A RAMP EDGE ABUTS A WALKABLE SURFACE, A FLARED SIDE SHALL BE PROVIDED. RAMP

FLARE SLOPES SHALL NOT EXCEED 10.0%.

® VERTICAL CURB RETURNS - VERTICAL CURB RETURNS MAY BE USED ONLY WHERE A RAMP ABUTS A NON-WALKABLE SURF ACE, OR WHERE A RAMP IS PROTECTED FROM PEDESTRIAN CROSS TRAFFIC (FOR EXAMPLE BY A SIGNAL

CABINET OR UTILITY POLE WHICH BLOCKS PASSAGE).

@) GUTTER COUNTER SLOPE - 5.0% MAX.

STANDARD PLAN NO.

CURB RAMPS M-608-1

Standard Sheet No. 2 of 10

CURB HEIGHT MAY

BE REDUCED TO

3" MIN.

BACK OF SIOEW ALK

TURNING SPACES

MAY OVERLAP

CROSSWALK BAR

(TYPICAL)

BACK OF SIDEWALK

BACK OF SIDEWALK

L.:.:..:J

TURNING SPACE

(SEE NOTES 3, 4, 5 - SHEET 2)

DETECTABLE WARNING SURFACE (DWS)

SEE DWS SHEETS FOR PLACEMENT DETAILS

RAMP RUNNING SLOPE

-<:::J::::::::: RAMP CROSS SLOPE

NOTE

PLACEMENTS SHOWN ARE TYPICAL CONFIGURATIONS ONLY

AND NOT INDICATIVE OF ALL OPTIONS. OTHER RAMP

CONFIGURATIONS MAY BE ACCEPT ABLE AS LONG AS

THEY CONFORM TO THE CRITERIA IN THESE ST AND ARDS,

AND ARE APPROVED BY THE ENGINEER.

TYPE 1 RAMPS FDR WIDE SIDEWALK TYPE 1 RAMP

(DIAGONAL)

TYPE 1 RAMPS FOR WIDE SIDEWALK

(3" REDUCED CURB)

4'MIN.

BACK OF SIOEW ALK

4' MIN.

TYPE 1 PERPENDICULAR RAMPS

NOT ALLOWABLE IN NEW CONSTRUCTION/FULL DEPTH RECONSTRUCTION

SEE GENERAL NOTE 4

CROSSWALK BAR

(TYPICAL)

CURB HEIGHT MAY

BE REDUCED TO

3" MIN.

LANDING AREA RUNNING

SLOPE 2% PREF., 5%

MAX .. MATCH RAMP

CROSS SLOPE

LANDING AREA RUNNING

SLOPE 2% PREF., 5%

MAX .. MATCH RAMP

CROSS SLOPE

TURNING SPACES

MAY OVERLAP

TYPE 1 DIRECTIONAL RAMPS

(3" REDUCED CURB)

LANDING AREA RUNNING

SLOPE 2% PREF., 5%

MAX .. MATCH RAMP

CROSS SLOPE

LANDING AREA RUNNING

SLOPE 2% PREF., 5%

MAX .. MATCH RAMP

BACK OF SIOEW ALK

4' MIN.

TYPE 1 CURB RAMPS TYPICAL CONFIGURATIONS

TYPE 1 DIRECTIONAL RAMPS

(LARGE RADIUS)

Com uter File Information Colorado Department of Transportation ~ 2829 West Howard Place

~:=~~ --------------- ~ g~~:er~~'o3rd86i~°: t------+-------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1-----+-----------1 Project Development Branch JBK

Sheet Revisions Creation Date: 07 /31/19

Designer Initials: JBK

Last Modification Date: 07 /31/19

Detailer Initials: LT A

CAD Ver.: MicroStation VB Scale: Not to Scale Units: English

Date: Comments

STANDARD PLAN NO.

CURB RAMPS M-608-1

Standard Sheet No. 3 of 10

SIDEWALK

SIDEWALK

PAR ALL EL RAMP

(TYPICAL)

CURB RAMP

VARIES

GRADE BREAK

8.3% MAX.

CURB RAMP

4" TYP.

LANDING AREA

VARIES

SECTION C-C

CURB RAMP

VARIES

GRADE BREAK

4" TYP.

4'MIN

TURNING SPACE

GRADE BREAK

FL

CURB FACE MAY BE ORIENTED

PERPENDICULAR TD BACK OF CURB

DR ORIENTED IN THE DIRECTION OF THE

CROSSING AS SHOWN.

CURB & GUTTER

PARALLEL RAMP

(SIDEWALK ENDS)

6" TD 8"

TOP OF

% PAVEMENT

MM--

GRADE BREAK

CURB & GUTTER

LANDING AREA RUNNING

SLOPE 2% PREF.,

5% MAX .. MATCH RAMP

CROSS SLOPE.

SEE DETECTABLE WARNING

SURFACE SHEETS FDR PLACEMENT

DETAILS

PARALLEL RAMP

(DIRECTIONAL - CROSSING IN ONE DIRECTION DNL Y)

SIDEWALK TD SHOULDER TRANSITION

PARALLEL RAMP NOTES

G) RAMP WIDTH - PROVIDE A RAMP WIDTH EQUAL TD THE ADJOINING SIDEWALK, PROVIDE 4 FT. WIDTH MINIMUM. RAMPS SERVICING

SHARED USE PATHS SHALL MATCH THE WIDTH OF THE PATH.

111111( • (D RAMP RUNNING SLOPE - 8.3% MAX.

,<;:::::::::, @ RAMP CROSS SLOPE - 2.0% MAX.

8.3% MAX. 2% TYP.

ct::t::::::1j::;:~22~~-=::;:~:::::::~~:zJs~~E~-.. ~No~-T~Ed. 5~--- =-::d·Ji: , X«, (D TURNING SPACE RUNNING SLOPE - 2.0% MAX. TURNING SPACE RUNNING SLOPE IS MEASURED PERPENDICULAR TD THE BACK OF

CURB.

CURB RAMP GRADE BREAK

CONCRETE

PEDESTRIAN CURB

SECTION 8-8

TURNING SPACE

4' MIN.

2' MIN.

DETECTABLE

WARNING

SURFACE

SECTION A-A

---6" TD 8"

TOP OF

5% PAVEMENT

~wl

D L.:..:..:J

SIDEWALK

TURNING SPACE (D@@

DETECTABLE WARNING SURFACE

(DWS)

TYPE 2 PARALLEL CURB RAMPS

@ TURNING SPACE CROSS SLOPE - 2.0% TYPICAL, AT CROSSINGS WITHOUT YIELD OR STOP CONTROL, OR WITH A SIGNAL WHERE VEHICLES CAN PROCEED THROUGH THE INTERSECTION WITHOUT SLOWING OR STOPPING, THE CROSS SLOPE OF THE TURNING SPACE MAY EQUAL THE HIGHWAY GRADE. AT MIDBLDCK PEDESTRIAN STREET CROSSINGS THE TURNING SPACE CROSS SLOPE MAY EQUAL THE HIGHWAY GRADE. TURNING SPACE CROSS SLOPE IS MEASURED IN THE DIRECTION OF THE RAMP RUN.

@ TURNING SPACE DIMENSIONS - PROVIDE A TURNING SPACE AT THE BOTTOM OF PARALLEL RAMPS WITH A WIDTH EQUAL TD THE WIDTH OF THE CURB RAMP. PROVIDE 4 FT. MINIMUM, MEASURED IN THE DIRECTION OF THE RAMP RUN. IF THE TURNING SPACE IS CONSTRAINED ON TWO SIDES, PROVIDE 5 FT. MEASURED IN THE DIRECTION OF PEDESTRIAN STREET CROSSING. THE TURNING

SPACE MAY CONTAIN THE DETECTABLE WARNING SURFACE.

(J) RAMP ALIGNMENT - RAMPS SHALL BE ALIGNED SO THE TURNING SPACE IS FULLY CONTAINED WITHIN THE CROSSWALK OR STREET CROSSING THEY SERVE. PROVIDE ONE RAMP FOR EACH STREET CROSSING DIRECTION. IN ALTERATIONS, WHERE EXISTING PHYSICAL CONSTRAINTS PREVENT PROVIDING ONE CURB RAMP FOR EACH CROSSING DIRECTION, A SINGLE DIAGONAL CURB RAMP (ON THE APEX OF A CORNER) SHALL BE PERMITTED TO SERVE BOTH PEDESTRIAN STREET CROSSINGS. DIAGONAL RAMPS ARE NOT ACCEPTABLE IN

NEW CONSTRUCTION, OR FULL -DEPTH RECONSTRUCTION.

@ RAMP LENGTH - PARALLEL RAMP LENGTH IS DEPENDENT UPON THE RAMP SLOPE AND THE CHANGE OF ELEVATION FROM THE TURNING SPACE TO THE SIDEWALK. WHERE TERRAIN IS SLOPING A RAMP IS NOT REQUIRED TO CHASE GRADE MORE THAN 15 FT. REGARDLESS

OF THE RESULTING RAMP SLOPE.

@ GUTTER COUNTER SLOPE - 5.0% MAX.

Com uter File Information Sheet Revisions Colorado Department of Transportation STANDARD PLAN NO.

~ 2829 West Howard Place

~:=~~ ---------------- ~ g~~:er~~'o3rd86i~°: t-------,1--------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1-----+-----------1 Project Development Branch JBK

Creation Date: 07 /31/19 CURB RAMPS Date: Comments M-608-1 Designer Initials: JBK

Last Modification Date: 07 /31/19 Standard Sheet No. 4 of 10 Detailer Initials: LT A

CAD Ver.: MicroStation VB Scale: Not to Scale Units: English Issued by the Project Development Branch: July 31, 2019 Project Sheet Number:

3" MIN. CURB

HEIGHT

PEDESTRIAN CURB OR

VERTICAL OBSTRUCTION

CROSSWALK BAR

(TYPICAL)

PEDESTRIAN CURB

TYPE 2 RAMPS SMALL RADIUS TYPE 2 RAMP {DIAGONAL)

LANDING AREA RUNNING

SLOPE 2% PREF., 5% MAX ..

MATCH RAMP CROSS SLOPE. TYPE 2 RAMP SMALL RADIUS

(3" REDUCED CURB)

ALL GRADE BREAKS PERPENDICULAR

TO PATH OF PEDESTRIAN TRAVEL

PEDESTRIAN CURB

PEDESTRIAN CURB

NOT ALLOWABLE IN NEW CONSTRUCTION/FULL-DEPTH RECONSTRUCTION

SEE NOTE GENERAL NOTE 4

5'MIN.

CURB FACE MAY BE ORIENTED

PERPENDICULAR TO BACK OF CURB

OR IN THE DIRECTION OF THE

CROSSING AS SHOWN.

PEDESTRIAN CURB

(CROSSING IN ONE DIRECTION)

NOTE

PLACEMENTS SHOWN ARE TYPICAL CONFIGURATIONS ONLY

AND NOT INDICATIVE OF ALL OPTIONS. OTHER RAMP

CONFIGURATIONS MAY BE ACCEPTABLE AS LONG AS

THEY CONFORM TO THE CRITERIA IN THESE STANDARDS,

AND ARE APPROVED BY THE ENGINEER.

ALL GRADE BREAKS PERPENDICULAR

TO PATH OF PEDESTRIAN TRAVEL

ALL GRADE BREAKS PERPENDICULAR

TO PATH OF PEDESTRIAN TRAVEL

TYPE 2 RAMP LARGE RADIUS

(CROSSING IN ONE DIRECTION)

TURNING SPACE

(SEE NOTE 4, 5, 6 - SHEET 4)

DETECTABLE WARNING SURFACE (DWS)

SEE DWS SHEETS FOR PLACEMENT

DETAILS

, RAMP RUNNING SLOPE

TYPE 2 RAMPS LARGE RADIUS -<::J====:, RAMP CROSS SLOPE

TYPE 2 CURB RAMPS TYPICAL CONFIGURATIONS

Creation Date: 07 /31/19 M-608-1

Com uter File Information Sheet Revisions STANDARD PLAN NO. Colorado Department of Transportation ~ 2829 West Howard Place

~:=~~ --------------- ~ g~~:er~~'o3rd86i~°: t------+-------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1-----+-----------1 Project Development Branch JBK

Date: Comments CURB RAMPS Designer Initials: JBK

Last Modification Date: 07 /31/19 Standard Sheet No. 5 of 10 Detailer Initials: LT A

Issued by the Project Development Branch: July 31, 2019 Project Sheet Number: CAD Ver.: MicroStation VB Scale: Not to Scale Units: English

ALL GRADE BREAKS PERPENDICULAR

TO PATH OF PEDESTRIAN TRAVEL

BACK OF SIDEWALK

PEDESTRIAN CURB

OR VERTICAL OBSTRUCTION

ALL GRADE BREAKS PERPENDICULAR

TO PATH OF PEDESTRIAN TRAVEL

NARROW SIDEWALK

TURNING SPACES

MAY OVERLAP BACK OF SIDEWALK

ALL GRADE BREAKS PERPENDICULAR

TO PATH OF PEDESTRIAN

TRAVEL

COMBINATION CURB RAMP NOTES:

TYPE 1

COMBINATION RAMP

(D THE CURB RAMP PLACEMENTS SHOWN ARE TYPICAL CONFIGURATIONS ONLY AND NOT INDICATIVE OF ALL OPTIONS. OTHER CURB RAMP CONFIGURATIONS MAY BE ACCEPTABLE AS LONG AS THEY CONFORM TO THE

CRITERIA IN THESE STANDARDS,AND ARE APPROVED BY THE ENGINEER.

@ RAMP AND TURNING SPACE CROSS SLOPE - 2.0% TYPICAL. AT CROSSINGS WITHOUT YIELD OR STOP CONTROL, OR WITH A SIGNAL WHERE VEHICLES CAN PROCEED THROUGH THE INTERSECTION WITHOUT SLOWING OR STOPPING, THE CROSS SLOPE OF THE RAMP AND TURNING SPACE MAY EQUALTHE HIGHWAY GRADE. AT MIDBLOCK PEDESTRIAN STREET CROSSINGS THE RAMP AND TURNING SPACE CROSS SLOPE MAY

EQUAL THE HIGHWAY GRADE.

Q) WHERE IT IS ACCEPT ABLE FOR A RAMP OR TURNING SPACE CROSS SLOPE TO EXCEED 2.0% AND MATCH THE HIGHWAY GRADE, THE RAMP ABOVE THE TURNING SPACE MAY BE WARPED TO TIE INTO THE ADJOINING SIDEWALK CROSS SLOPE. THE TRANSITION TO THE SIDEWALK CROSS SLOPE SHALL BE SPREAD EVENLY OVER THE LENGTH OF THE RAMP TO MINIMIZE WARPING. THE RATE OF CHANGE IN CROSS SLOPE MAY NOT

EXCEED 3.0% PER LINEAR FOOT.

CROSSWALK BAR

(TYPICAL)

ALL GRADE BREAKS PERPENDICULAR

TO PATH OF PEDESTRIAN TRAVEL

BACK OF SIDEWALK

TYPE 1/TYPE 2

COMBINATION RAMP

TYPE 1/TYPE 2

COMBINATION RAMP

COMBINATION CURB RAMPS TYPICAL CONFIGURATIONS

Date: Comments Colorado Department of Transportation ~ 2829 West Howard Place

~:=~~ ---------------- ~ g~~:er~~'o3rd86i~°: t-------,1--------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1-----+-----------1 Project Development Branch JBK

Com uter File Information Sheet Revisions Creation Date: 07 /31/19

Designer Initials: JBK

Last Modification Date: 07 /31/19

Detailer Initials: LT A

CAD Ver.: MicroStation VB Scale: Not to Scale Units: English

CURB RAMPS

Issued by the Project Development Branch: July 31, 2019

L.:.:..:J

TURNING SPACE @ Q)

DETECTABLE WARNING SURFACE (DWS)

SEE DWS SHEETS FOR PLACEMENT DETAILS

RAMP RUNNING SLOPE

,<}:::::::::, RAMP CROSS SLOPE@ Q)

STANDARD PLAN NO.

M-608-1

Standard Sheet No. 6 of 10 Project Sheet Number:

TOP OF

PAVEMENT

GUTTER SLOPE

5% MAX.

611 VARIES

TO FL

2' MIN. 4' MIN.

5% MAX.

6"

DETECTABLE

WARNING

SURFACE

SECTION A-A

BLENDED TRANSITION

CONCRETE SIDEWALK CURB RAMP

TURNING

SPACE

(VARIES)

DEPRESSED CORNER

SIDEWALK

6"

FL TO

-----------i-o----VAR-IE_S ______ --i 8" D

CROSSWALK BAR

(TYPICAL)

SIDEWALK 5%

CONCRETE

SIDEWALK

6"

GRADE BREAK

SECTION 8-8

L.:.:..:J

TURNING SPACE© @ ®

DETECTABLE WARNING SURFACE

(DWS)

BLENDED TRANSITION & DEPRESSED CORNER NOTES

GUTTER

GRADE BREAK

GRADE BREAK

(D PERPENDICULAR AND PARALLEL RAMP CONFIGURATIONS ARE PREFFERED. BLENDED TRANSITIONS AND DEPRESSED CORNERS SHOULD ONLY BE USED WHERE SITE CONDITIONS MAKE THEM A MORE APPROPRIATE OPTION, OR WHERE PERPENDICULAR OR PARALLEL RAMPS CANNOT BE INSTALLED DUE TO A PHYSICAL SITE CONSTRAINT.

PEDESTRIAN CURB OR

VERTICAL OBSTRUCTION

0 RAMP WIDTH - PROVIDE 5 FT. OR GREATER WHERE POSSIBLE. IF SITE CONSTRAINTS DO NOT PERMIT, PROVIDE 4FT. WIDTH MINIMUM. RAMPS SERVICING SHARED USE PATHS SHALL MATCH THE WIDTH OF THE PATH.

111111( • G) RAMP RUNNING SLOPE - 8.3% MAX .

......._ © BLENDED TRANSITION RUNNING SLOPE - 5.0% MAX.

-<::=== @ RAMP AND TURNING SPACE CROSS SLOPE - 2.0% TYPICAL. AT CROSSINGS WITHOUT YIELD OR STOP CONTROL, OR WITH A SIGNAL WHERE VEHICLES CAN PROCEED THROUGH THE INTERSECTION WITHOUT SLOWING OR STOPPING, THE CROSS SLOPE OF RAMPS AND TURNING SPACES MAY EQUAL THE HIGHWAY GRADE.

® TURNING SPACE DIMENSIDNS - PROVIDE A 4 FT. X 4 FT. MIN. TURNING SPACE AT THE BOTTOM OF RAMP

RUNS. THE TURNING SPACE MAY CONTAIN THE DETECTABLE WARNING SURFACES.

(J) RAMP ALIGNMENT - TURNING SPACE SHALL BE ALIGNED TO BE FULLY CONTAINED WITHIN THE CROSSWALK

OR STREET CROSSING(S) THEY SERVE.

{]) RAMP LENGTH - RAMP LENGTH IS DEPENDENT UPON THE RAMP SLOPE AND THE CHANGE OF ELEVATION FROM THE TURNING SPACE TO THE SIDEWALK. WHERE TERRAIN IS SLOPING A RAMP IS NOT REQUIRED TO CHASE

GRADE MORE THAN 15 FT. REGARDLESS OF THE RESULTING RAMP SLOPE.

@ RAMP FLARES - WHERE A RAMP EDGE ABUTS A WALKABLE SURFACE, A FLARED SIDE MUST BE PROVIDED. RAMP

FLARE SLOPES SHALL NOT EXCEED 10.0%.

@) VERTICAL CURB RETURNS - VERTICAL CURB RETURNS MAY BE USED ONLY WHERE A RAMP ABUTS A NON-WALKABLE SURFACE, OR WHERE A RAMP IS PROTECTED FROM PEDESTRIAN CROSS TRAFFIC (FOR EXAMPLE

BY A SIGNAL CABINET OR UTILITY POLE WHICH BLOCKS PASSAGE).

BLENDED TRANSITION DEPRESSED CORNER @ GUTTER COUNTER SLOPE - 5.0% MAX.

Com uter File Information Creation Date: 07 /31/19

Designer Initials: JBK

Last Modification Date: 07 /31/19

Detailer Initials: LT A

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English

TYPE 5 - DEPRESSED CORNER/BLENDED TRANSITION ~ DWS PLACEMENT - DWS SHALL BE PLACED AROUND THE RADIUS AND LOCATED AT THE BACK OF CURB ON

BLENDED TRANSITION AND DEPRESSED CORNER RAMPS.

Sheet Revisions Colorado Department of Transportation ~ 2829 West Howard Place

~:=~~ --------------- ~ g~~:er~~'o3rd86i~°: t------+-------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1-----+-----------1 Project Development Branch JBK

Date: Comments

STANDARD PLAN NO.

CURB RAMPS M-608-1

Standard Sheet No. 7 of 10

TURNING SPACE

5' MIN.

TURNING SPACE

5' MIN.

15' MAX.

6' MIN. ----.........._

15'MAX.

IO'MIN. ~

4'MAX. -

I I

/{IRAfL

PATH OR SIDEWALK

CROSSING

GATE

NOTES:

(D DETECTABLE WARNING SURFACES SHALL BE PLACED IN ALIGNMENT WITH

THE BACK OF CURB.

CD FLARED SIDES ARE PREFERENTIAL ON RAISED INTERSECTION ISLANDS

AND SHOULD BE PROVIDED ON ISLANDS WHICH SERVE SHARED USE

PATHS, OR AT LOCATIONS WHERE BICYCLE USE IS EXPECTED.

(}) FOR CUT-THROUGH MEDIAN ISLANDS,DETECTABLE WARNING SURFACES

SHALL BE PLACED IN ALIGNMENT WITH THE BACK OF CURB AND BE

SEPARATED BY A MINIMUM 2 FOOT SPACE WITHOUT DWS. IF A 2

FOOT SEPARATION BETWEEN DETECTABLE WARNING SURFACES CANNOT

BE PROVIDED NO DETECTABLE WARNING SURFACE SHALL BE INSTALLED.

(±) CURB RAMP AND CUT-THROUGH WIDTHS SHOULD BE THE SAME WIDTH

AS ANY SIDEWALK OR SHARED USE PATH WHICH THEY SERVE .

INTERSECTION ISLANDS I

MEDIAN 5'

ISLAND - MIN .

SQUARE CURB TO ORIENT

PEDESTRIANS IN THE

DIRECTION OF THE CROSSING

I 6'0R

- GREATER

I

Com uter File Information Creation Date: 07 /31/19

Designer Initials: JBK

Last Modification Date: 07 /31/19

Detailer Initials: LT A

CAD Ver.: MicroStation VB Scale: Not to Scale Units: English

5' MIN.

6'0R

GREATER

MEDIAN

ISLAND

SQUARE CURB TO ORIENT

PEDESTRIANS IN THE

LESS THAN

6'

ELIMINATE DWS IF MEDIAN

REFUGE IS LESS THAN

6' IN LENGTH IN THE

DIRECTION OF PEDESTRIAN

DIRECTION OF THE CROSSING TRAVEL

AT-GRADE RAIL CROSSING

MEDIAN

ISLAND

MEDIAN

ISLAND

CROSSWALK BAR

(TYPICAL) ~

MEDIAN ISLANDS ~ TURNING SPACE

MEDIANS / RAILROADS / ISLANDS

Comments Colorado Department of Transportation ~ 2829 West Howard Place

~:=~~ --------------- ~ g~~:er~~'o3rd86i~°: t------+-------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1-----+-----------1 Project Development Branch JBK

Sheet Revisions Date:

STANDARD PLAN NO.

CURB RAMPS M-608-1

Standard Sheet No. 8 of 10

WIDTH OF CURB RAMP

BACK OF CURB

DWS LEADING EDGE

TYPE 1 CURB RAMP

(PERPENDICULAR ON TANGENT)

FLOWLINE

BACK OF CURB

BOTTOM OF RAMP

GRADE BREAK

BACK OF CURB

TYPE 1 CURB RAMP

(DIRECTIONAL ON RADIUS)

2'MAX. @

FLOWLINE

BACK OF CURB

EDGE OF

PAVEMENT

DWS LEADING

EDGE

WIDTH OF CURB

RAMP

TYPE 1 CURB RAMP

(PERPENDICULAR ON RADIUS)

1--2' MIN.

FLOWLINE

WIDTH OF SHARED

USE PATH

SHARED USE PATH

SHARED USE PATH CROSSING

DETECT ABLE WARNING SURF ACE NOTES:

,.,-, C±) DWS LEADING

\::V EDGE

(D DETECTABLE WARNING SURFACES (DWS) SHALL BE INSTALLED AT SIDEWALK, OR SHARED USE PATH, TO STREET TRANSITIONS, AND SHALL CONSIST OF TRUNCATED DOME SURFACES.ANY TRUNCATED DOME PANELS OR PAYERS WHICH ARE USED

MUST BE ON THE CDOT APPROVED PRODUCTS LIST (APL).

~ THE DETECTABLE WARNING SURFACE SHALL SPAN THE FULL WIDTH OF THE CURB RAMP,SHARED USE PATH,OR OTHER ROADWAY ENTRANCE AS APPLICABLE. A GAP OF 2 INCHES FROM THE EDGE OF THE DETECTABLE WARNING SURFACE TO

THE EDGE OF THE CURB RAMP OR SHARED USE PATH IS PERMITTED.

Q) WHEN DETECTABLE WARNING SURFACES ARE PLACED ON A SLOPE GREATER THAN 5.0%, TRUNCATED DOMES SHOULD BE ALIGNED IN THE DIRECTION OF THE RAMP RUN;OTHERWISE DOMES ARE NOT REQUIRED TO BE ALIGNED. TRUNCATED DOMES SHALL BE IN A SQUARE GRID OR RADIAL PATTERN. WHEN PLACED RADIALLY, PLACE ADJACENT DWS PLATES EDGE

TO EDGE. EDGES OF CUT PLATES SHALL BE STRAIGHT.

C±) LOCATE ONE CORNER OF THE DWS LEADING EDGE AT THE BACK OF CURB. NO POINT ON THE LEADING EDGE OF THE DWS MAY BE MORE THAN 5 FT. FROM THE BACK OF CURB. WHEN ANY POINT OF THE LEADING EDGE OF THE DWS WILL BE GREATER THAN 5 FT. FROM THE BACK OF CURB,PLACE THE DWS RADIALLY AT THE BACK OF CURB.

BOTTOM OF RAMP

GRADE BREAK

4'MIN.

5'0R LESS

'V

'V 'V

'V

'V 'V

@ WHERE PERPENDICULAR DIRECTIONAL RAMPS ABUT A WALKABLE SURFACE, THE LEADING EDGE OF THE DWS SHALL NOT BE PLACED FURTHER THAN 2 FEET FROM THE BACK OF CURB. IF THE RADIUS OF A CORNER MAKES THIS IMPOSSIBLE, ORIENT THE CURB RAMP PERPENDICULAR TO THE CURB AND GUTTER.

C±) DWS LEADING EDGE

@ IF THE DETECTABLE WARNING SURFACE IS CUT, GRIND OFF THE REMAINING PORTION OF ANY CUT TRUNCATED DOMES.

SEAL ALL CUT PANEL EDGES WITH AN APL SEALANT TO PREVENT WATER DAMAGE.

BACK OF CURB

'V

'V

BOTTOM OF RAMP

GRADE BREAK

SHARED USE

PATH / SIDEWALK

'V 'V 'V 'V 'V 'V 'V

'V 'V 'V 'V 'V

'V 'V 'V 'V 'V

'V 'V 'V

'V 'V

2' MIN.

'V 'V 'V 'V 'V 'V

'V 'V 'V 'V 'V 'V

'V 'V 'V 'V 'V 'V

'V 'V 'V 'V 'V 'V

'V 'V 'V 'V 'V 'V

SIDEWALK

RAMP

WIDTH OF CURB ~

(f) TRUNCATED DOME PLATES SHALL BE EMBEDED IN THE CONCRETE CURB RAMP WHILE THE CONCRETE IS PLASTIC.

(]) DWS SHALL NOT BE PLACED OVER GRADE BREAKS.

TYPE 2 - DIRECTIONAL RAMP

DWS LEADING EDGE

TYPE 2 CURB RAMP

DETECTABLE WARNING SURFACE PLACEMENT

Com uter File Information Colorado Department of Transportation ~ 2829 West Howard Place

~:=~~ ---------------- ~ g~~:er~~'o3rd86i~°: t-------,1--------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X>

cR-x> 1------+-----------1 Project Development Branch JBK

Sheet Revisions Creation Date: 07 /31/19 CURB RAMPS Date: Comments

Designer Initials: JBK

Last Modification Date: 07 /31/19

Detailer Initials: LT A

CAD Ver .: MicroStation VB Scale: Not to Scale Units: English Issued by the Project Development Branch: July 31, 2019

~ DETECTABLE WARNING SURFACE

l::::::::J (DWS)

STANDARD PLAN NO.

M-608-1

Standard Sheet No. 9 of 10

DWS SPANS WIDTH OF CURB RAMP

(WITHIN 2" OF EACH EDGE)

FLARED SIDE TRUNCATED DOME PLATE FLARED SIDE OR

OR RETURN CURB~ / SET INTO WET CONCRETE r RETURN CURB

----:,'--r~.--... -~L .. -.. ·-.. -.... -.1..~-.. 0111~M .. = ... ~.TY .. ~ .. ·'-.-.... -.-... ~--r-- 6" ! I I I I I I I I I I I I I I 611 !

_l__

T 6"

SECTION VIEW OF DETECT ABLE

WARNING SURFACE PLATE

(LOOKING AT PERPENDICULAR RAMP

RUN FROM STREET)

GUTTER

I

: 21 MIN.

TURNING SPACE 'I i--- CONCRETE

6" TD 8" . - I PEDESTRIAN CURB L_

-, ----:l _ - <(>- - - - - - --!- /'/>'.I'.:~ . t L .. L\ : " .· t ... \ ' • ' _:_JI>' <~V

6" J ' t_J \ 1,, RAMP

TRUNCATED DOME PLATE

SECTION VIEW FOR PARALLEL

CURB RAMP TYPES

(LOOKING PERPENDICULAR TO TURNING SPACE)

CURB-

THE TOP DIAMETER OF THE TRUNCATED DOMES

SHALL BE 50% TO 65% OF THE BASE DIAMETER

I· I ·I o.i

I • 0.9" TO 1.4" • I

ELEV A TION VIEW OF SINGLE

TRUNCATED DOME

0.040" (TYP~1_J-0.90~~:YP.)-J

0.20~1:'.'.~ L "-. __ I __

NON-SKID SURF ACE

PLATE THICKNESS VARIES j

ELEV A TION VIEW OF TRUNCATED DOME

FOR DETECTABLE WARNING PLATE

DWS SPANS WIDTH

2" MAX. -- i----- OF CURB RAMP -- -2 11 MAX.

(WITHIN 2" OF EACH EDGE)

i--~ -

~ ' . . . . . . . . . . . . . . . EDGE OF RAMP 1 DETECTABLE WARNING

GUTTER I SURF ACE AREA I CURB RAMP I

J FLARED SIDE . 6" I I_L

CURB ~ OR RETURN CURB M 2'MIN.

:/ffiPATH r.!>' , L I DOME ~ · • 411 TRANSITION--I:: - ---- - ----~ -- - ----l p· ·

6"{.~·.· ..... ·t ·· ' .- 1 .tLL.io~"l-,l,.-t_ ,IL; .~Jif'•~~/ >·· .· . T • • • • • • • • • • • • • • • 1.6" TD 2.4" fl . . • fl 611 • "' /j. ."' . .&J • • fl . . "\.. . . '--/

~ . • • • • • • • • • • • • • • • . I ··············••-+-+-~~ ·············••+-1-~~ t

Computer File Information Creation Date: 07 /31/19

Designer Initials: JBK

Last Modification Date: 07 / 31/19

Detailer Initials: LT A

L TRUNCATED DOME PLATE(S)

SECTION VIEW FOR PERPENDICULAR

CURB RAMP TYPES

(LOOKING PERPENDICULAR TO RAMP RUN)

6" TO 8" (TYP.)

FROM CURB FLOW LINE -

A · A ·

O.B5" ___ .....,,._ ____ 1.6" TO 2.4"

(TYP.)

' A I A. .

L- TRUNCATED DOME PLATE(S)

~FLOWLINE

PLAN VEIW OF DETECT ABLE WARNING

SURFACE PLATE

DETECTABLE WARNING SURFACE DETAILS

Colorado Department of Transportation ~ 2829 West Howard Place

~:=~~ --------------- ~ g~~:er~~'o3rd86i~°:

CR-X) 1------+-------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

Sheet Revisions

CURB RAMPS Date: Comments

CAD Ver.: MicroStation VB Scale: Not to Scale Units: English cR-x> Project Development Branch JBK Issued by the Project Development Branch: July 31, 2019

STANDARD PLAN NO.

M-608-1

Standard Sheet No. 10 of 10