COUNTY RIGHT-OF-WAY STANDARDS - …leelanauroads.org/leelroads.org/Driveway Sketches... · l c of...
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LEELANAU COUNTY ROAD COMMISSION 10550 East Eckerle Road Suttons Bay, Michigan 49682 Commissioners Contacts General Contact Info Jim Calhoun - Chairman Managing Director – Dan Wagner, P.E. Phone (231) 271-3993 John Popa – Vice Chairman Engineer – James C. Johnson, P.E. Fax (231) 271-5612 Robert Joyce – Member Superintendent – David Priest e-mail [email protected] Finance Manager – Joel Nedow http://leelanaucountyroads.org COUNTY RIGHT-OF-WAY STANDARDS (Originally Adopted 2-15-94) (Revised 3-5-02) (Revised 3-2-16) (Revised 1-17-17) These standards are adopted in accordance with and under the authority of MCL 247.325. The following information is a general summary of Road Commission Standards and Specifications regulating the use of right-of-ways. The Leelanau County Road Commission reserves the right to impose additional requirements for the construction of improvements in the county road right of way as the Road Commission may deem in the best interests of the Road Commission and the motoring public. Driveways The finished surface on a driveway approach shall slope down from the pavement edge at a rate of 4% back to the ditch centerline. This distance shall not be less than 8’. See Sketch “A-A” on Sheet 3. The sides of a driveway shall slope down to ditch bottom at a minimum 3 on 1 slope in residential areas where the speed limit is 25 mph. In all other areas the minimum slope shall be 4 on 1. See Sketch “B-B” on Sheet 3. When required, culverts shall be corrugated steel or concrete pipe. End sections may be required. Plastic culvert is allowed only if steel end sections are used. Minimum culvert diameter is 12”. Culverts longer than 30’ must be at least 15” diameter. On primary (numbered) roads a culvert shall be at least 15” diameter. A 20’ flat landing shall be constructed behind road shoulder when requested. Maximum finished grade shall not exceed 10% unless approved by the Road Commission. Maximum width of a residential drive is 24’. Driveway must intersect road at right angles with a variance allowed up to 20 degrees. Standard driveway radiuses are 15’ to the road shoulder. A paved driveway must have a 6’ minimum paved shoulder beyond the radius and a 20’ long taper. When asphalt or concrete is placed on the shoulder within 40 feet from an existing paved surface, the shoulder area between paved surfaces must also be paved. Paved residential driveway approaches shall be at least 2” thick (220 lbs/syd); concrete approaches shall be at least 6” thick. The ends shall be tapered or dubbed down to eliminate any sharp edge that might obstruct snow removal. The adjacent gravel shoulder shall be graded to be flush with concrete or bituminous when completed.
Transcript of COUNTY RIGHT-OF-WAY STANDARDS - …leelanauroads.org/leelroads.org/Driveway Sketches... · l c of...
LEELANAU COUNTY ROAD COMMISSION 10550 East Eckerle Road Suttons Bay, Michigan 49682
Commissioners Contacts General Contact Info
Jim Calhoun - Chairman Managing Director – Dan Wagner, P.E. Phone (231) 271-3993 John Popa – Vice Chairman Engineer – James C. Johnson, P.E. Fax (231) 271-5612 Robert Joyce – Member Superintendent – David Priest e-mail [email protected]
Finance Manager – Joel Nedow http://leelanaucountyroads.org
COUNTY RIGHT-OF-WAY STANDARDS (Originally Adopted 2-15-94)
(Revised 3-5-02) (Revised 3-2-16) (Revised 1-17-17)
These standards are adopted in accordance with and under the authority of MCL 247.325. The following information is a general summary of Road Commission Standards and Specifications regulating the use of right-of-ways. The Leelanau County Road Commission reserves the right to impose additional requirements for the construction of improvements in the county road right of way as the Road Commission may deem in the best interests of the Road Commission and the motoring public.
Driveways The finished surface on a driveway approach shall slope down from the pavement edge at a rate of 4% back to the ditch centerline. This distance shall not be less than 8’. See Sketch “A-A” on Sheet 3. The sides of a driveway shall slope down to ditch bottom at a minimum 3 on 1 slope in residential areas where the speed limit is 25 mph. In all other areas the minimum slope shall be 4 on 1. See Sketch “B-B” on Sheet 3. When required, culverts shall be corrugated steel or concrete pipe. End sections may be required. Plastic culvert is allowed only if steel end sections are used. Minimum culvert diameter is 12”. Culverts longer than 30’ must be at least 15” diameter. On primary (numbered) roads a culvert shall be at least 15” diameter. A 20’ flat landing shall be constructed behind road shoulder when requested. Maximum finished grade shall not exceed 10% unless approved by the Road Commission. Maximum width of a residential drive is 24’. Driveway must intersect road at right angles with a variance allowed up to 20 degrees. Standard driveway radiuses are 15’ to the road shoulder. A paved driveway must have a 6’ minimum paved shoulder beyond the radius and a 20’ long taper. When asphalt or concrete is placed on the shoulder within 40 feet from an existing paved surface, the shoulder area between paved surfaces must also be paved. Paved residential driveway approaches shall be at least 2” thick (220 lbs/syd); concrete approaches shall be at least 6” thick. The ends shall be tapered or dubbed down to eliminate any sharp edge that might obstruct snow removal. The adjacent gravel shoulder shall be graded to be flush with concrete or bituminous when completed.
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A driveway shall not infringe upon a road intersection radius. Normally a drive shall be located a minimum of 15’ from a property line unless it will function as a joint drive approach with the neighboring property. If sod or other landscaping material is placed at the edge of the road shoulder, it must be kept lower than the shoulder. Place topsoil, seed, fertilizer and mulch on all disturbed areas to prevent erosion. A drive serving one or two single family residences will be considered a residential driveway. Construction shall be in accordance with Sketch #1 or #2 as designated by the Road Commission at the time of issuing the permit. Driveways to provide access for vacant land or the cultivation of agricultural crops shall also meet these specifications. A drive serving 3 to 14 residential units shall be considered a multiple residential driveway. Construction shall be in accordance with Sketch #3 or #4 as designated by the Road Commission at the time of issuing the permit. A paved surface will be required for any driveway serving 5 or more residential units. These driveway approaches shall be paved with asphalt at least 3” thick (330 lbs/syd); thickness of concrete approaches shall be as required by the Engineer. A drive serving more than 14 residential units shall be considered a commercial driveway. Construction of all commercial driveways shall be in accordance with Sketch #5 or #6 as designated at the time of issuing the permit. A paved surface and MDOT type B-2 concrete curb and gutter will be required for any commercial driveway. These driveway approaches shall be paved with asphalt at least 3” thick (330 lbs/syd); thickness of concrete approaches shall be as required by the Engineer. For multi-residential and commercial driveways a cash escrow deposit in accordance with the Road Commission’s current fee schedule is required to guarantee completion. Sight distance requirements are normally measured within the existing road right-of-way. If sight distance is obtained by using land outside the right-of-way, then a clear vision easement and deed restriction providing vision and maintaining it in perpetuity shall be provided. No stormwater from a new drive will be allowed to run out onto the road or shoulder. In no case shall the rate of stormwater from developed sites flowing to the county road right-of-way be greater than that from the undeveloped site. Any change in use of the property (from undeveloped to developed, adding one or more residences, new or more intensive commercial) will require meeting the current standards of sight distance, drainage, width, slope and surfacing for a new driveway. An applicant proposing a high-volume commercial driveway may be required to provide a right turn deceleration lane and/or a passing relief lane to accommodate left turns into the proposed drive.
Land Division Act All new driveways and parcels being created under Act 591 of 1996 must meet current AASHTO requirements for minimum stopping sight distance lengths. Reductions to the required stopping sight distance will not be considered for type of road, side slopes, road grades or advisory speed (yellow) signs.
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If a new drive is to serve more than one parcel, the developer shall obtain a drive permit and construct the drive to the appropriate standards at the time the land division is approved. The Road Commission may require an engineered site plan for difficult or unusual site conditions to assure proper design and compliance with standards.
Mailboxes Mailboxes are allowed in the road right-of-way as a public service. The face of the mailbox shall be placed a minimum of 6’ off the edge of the blacktop or 1’ behind the road shoulder, whichever is farthest from the centerline. Single mailboxes should be installed on 4” x 4” or 5” diameter wood posts or steel posts weighing less than 3 lbs. per foot. These supports should be embedded with no more than 24” in the ground. Multiple mailbox installations shall be placed on individual supports. The Road Commission will not be responsible for damage to mailboxes caused by snow removal operations. In the event the plow or the truck were to directly hit a mailbox the Road Commission will replace with a standard mailbox.
Other Improvements The following activities are not allowed within the road right-of-way and are actively being removed:
Filling of roadside ditches.
Planting of trees, shrubs, seedlings or bushes of any kind.
Construction of any type of retaining wall or headwall along side of driveways.
The placement of any type of fence.
The placement of rocks, boulders or earth berms.
The placement of signs, light posts or other encroachment considered by the Road Commission as hazardous.
The Road Commission will not issue a permit to place a sprinkler system within the road right-of-way. Sprinklers shall not be allowed to water curbs, saturate the road grade or discharge flow onto any part of traveled portion of the road. If sprinkler systems are damaged, the Road Commission will not pay for repair or replacement costs. Altering, moving or removing road features (signs, pavement markings, culverts, pavement, shoulders, etc.) is not allowed unless approved in writing by the Road Commission. The Road Commission will issue permits to allow changes to road features only when Road Commission staff determines that the change(s) would be an improvement in the best interest of the motoring public. Note: If you are disturbing earth within 500 feet of a lake or stream, or planning to disturb more than one acre of land, a soil erosion control permit (Act 347) will be required. A DEQ permit may also be required. If you are uncertain of additional permits please check with the Soil Erosion Control Office. L:\Staff folders\Engineer\Driveway\ROW Standards 1-17-2017 BOARD APPROVED.docx
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C OF ROAD
LEELANAU COUNTY
REVISIONS
RESIDENTIAL DRIVEWAYAPPROACH DETAIL
DATE: 01/09/2017 DRAWING NOT TO SCALE
RIGHT OF WAY
EXIST. SHOULDER
C OF DITCH
15' MIN.
RADIUS
SKETCH #1
ROAD COMMISSION
DRIVEWAY
12' MIN. / 24' MAX.
15'
MIN.
PR
OP
ER
TY
LIN
E
CU
LV
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(IF
R
EQ
UIR
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)
EXIST. SHOULDER
33'
MIN
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20' 20'
15' MIN.
RADIUS
A
A
L
C O
F R
OA
D
L
C O
F D
IT
CH
PROPOSED
GRADE
(10% MAX)
EXISTING
GRADE
SECTION A-A
SECTION B-B
REQUIRED LOW
POINT AT C
OF DITCH
L
CULVERT LOCATION
(IF REQUIRED)
1' OF COVER
RECOMMENDED
4% MAX.
SHOULDER SLOPE
MAILBOX
LOCATION
16' TYPICAL
(8' MIN.)
1'
MIN.
L
C OF DITCH
1
METAL END SECTIONS
REQUIRED FOR
PLASTIC CULVERTS
DRIVEWAY
PLACE ____' OF ___" CULV.
(SEE PERMIT)
B
B
SH
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LD
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GE
6' MIN.
EDGE OF PAVEMENT
70° MIN. / 110° MAX.
EDGE OF PAVEMENT
3 MIN.
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LEELANAU COUNTY
REVISIONS
RESIDENTIAL DRIVEWAYAPPROACH DETAIL
DATE: 01/09/2017 DRAWING NOT TO SCALE
RIGHT OF WAY
EXIST. SHOULDER
C OF DITCH
15' MIN.
RADIUS
SKETCH #2
ROAD COMMISSION
DRIVEWAY
12' MIN. / 24' MAX.
15'
MIN.
PR
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LIN
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CU
LV
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(IF
R
EQ
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EXIST. SHOULDER
33'
MIN
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20' 20'
15' MIN.
RADIUS
A
A
L
C O
F R
OA
D
PROPOSED
GRADE
(10% MAX)
EXISTING
GRADE
SECTION A-A
MAILBOX
LOCATION
20' LANDING AREA (MIN.)
MAX. 4% SLOPE
1'
MIN.
B
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SH
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LD
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6' MIN.
EDGE OF PAVEMENT
EDGE OF PAVEMENT
70° MIN. / 110° MAX.
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LEELANAU COUNTY
REVISIONSMULTI-RESIDENTIAL
DRIVEWAYAPPROACH DETAIL
DATE: 01/09/2017 DRAWING NOT TO SCALE
C OF DITCH
25'
RADIUS
SKETCH #3
ROAD COMMISSION
35' MIN. 35' MIN.
25'
RADIUS
A
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C O
F R
OA
D
L
C O
F D
IT
CH
PROPOSED
GRADE
(10% MAX)
EXISTING
GRADE
SECTION A-A
SECTION B-B
REQUIRED LOW
POINT AT C
OF DITCH
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CULVERT LOCATION
(IF REQUIRED)
1' OF COVER
RECOMMENDED
MAILBOX
LOCATION
16' TYPICAL
(8' MIN.)
1'
MIN.
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C OF DITCH
1
4 MIN.
METAL END SECTIONS
REQUIRED FOR
PLASTIC CULVERTS
DRIVEWAY
PLACE ____' OF ___" CULV.
(SEE PERMIT)
B
B
SH
OU
LD
ER
ED
GE
10' MIN.
6' MIN.
6' MIN.
70° MIN. / 110° MAX.
EXIST. SHOULDER
EXIST. SHOULDER
A
EDGE OF PAVEMENT
EDGE OF PAVEMENT
4% MAX.
SHOULDER SLOPE
CULVERT
(IF REQUIRED)
DRIVEWAY 24' MIN.
SURFACE TO BE HOT MIXED
ASPHALT PLACED AT A RATE
OF 330 LBS PER SYD (2
LAYERS AT 165# PER SYD)
LEELANAU COUNTY
REVISIONS DATE: 01/09/2017 DRAWING NOT TO SCALE
SKETCH #4
ROAD COMMISSION
L
C O
F R
OA
D
PROPOSED
GRADE
(10% MAX)
EXISTING
GRADE
SECTION A-A
MAILBOX
LOCATION
1'
MIN.
SH
OU
LD
ER
ED
GE
MULTI-RESIDENTIALDRIVEWAY
APPROACH DETAIL
L
L
C OF ROAD
C OF DITCH
25'
RADIUS
CULVERT
(IF REQUIRED)
35' MIN. 35' MIN.
25'
RADIUS
A
B
B
70° MIN. / 110° MAX.
10' MIN.
6' MIN.
20' LANDING AREA (MIN.)
MAX. 4% SLOPE
EXIST. SHOULDER
EXIST. SHOULDER
A
EDGE OF PAVEMENT
EDGE OF PAVEMENT
DRIVEWAY 24' MIN.
SURFACE TO BE HOT MIXED
ASPHALT PLACED AT A RATE
OF 330 LBS PER SYD (2
LAYERS AT 165# PER SYD)
LEELANAU COUNTY
REVISIONSCOMMERCIAL
DRIVEWAYAPPROACH DETAIL
DATE: 01/09/2017 DRAWING NOT TO SCALE
SKETCH #5
ROAD COMMISSION
L
C O
F R
OA
D
L
C O
F D
IT
CH
PROPOSED
GRADE
(10% MAX)
EXISTING
GRADE
SECTION A-A
SECTION B-B
REQUIRED LOW
POINT AT C
OF DITCH
L
CULVERT LOCATION
(IF REQUIRED)
1' OF COVER
RECOMMENDED
MAILBOX
LOCATION
16' TYPICAL
(8' MIN.)
1'
MIN.
L
C OF DITCH
1
4 MIN.
METAL END SECTIONS
REQUIRED FOR
PLASTIC CULVERTS
DRIVEWAY
PLACE ____' OF ___" CULV.
(SEE PERMIT)
SH
OU
LD
ER
ED
GE
6' MIN.
4% MAX.
SHOULDER SLOPE
L
L
C OF ROAD
C OF DITCH
30'
RADIUS
DRIVEWAY 30' TYP. WIDTH***
SURFACE TO BE HOT MIXED
ASPHALT PLACED AT A RATE
OF 330 LBS PER SYD (2
LAYERS AT 165# PER SYD)
50' MIN. 50' MIN.
30'
RADIUS
A
B
B
70° MIN. / 110° MAX.
10' MIN.
6' MIN.EXIST. SHOULDER
EXIST. SHOULDER
A
EDGE OF PAVEMENT
EDGE OF PAVEMENT
CULVERT
(IF REQUIRED)
MDOT B2 CONCRETE
CURB AND GUTTER
***TYPICAL COMMERCIAL DRIVEWAY
WIDTH SHALL BE 30'. USES
DETERMINED TO GENERATE MINIMAL
TRIPS CAN BE REDUCED TO 24'. USES
DETERMINED TO GENERATE
EXCESSIVE TRIPS MAY BE REQUIRED
TO BE INCREASED TO 40'. THIS WILL BE
DETERMINED AT THE DISCRETION OF
THE ROAD COMMISSION ENGINEER.
LEELANAU COUNTY
REVISIONS DATE: 01/09/2017 DRAWING NOT TO SCALE
SKETCH #6
ROAD COMMISSION
L
C O
F R
OA
D
PROPOSED
GRADE
(10% MAX)
EXISTING
GRADE
SECTION A-A
MAILBOX
LOCATION
1'
MIN.
SH
OU
LD
ER
ED
GE
COMMERCIALDRIVEWAY
APPROACH DETAIL
L
L
C OF ROAD
C OF DITCH
30'
RADIUS
50' MIN. 50' MIN.
30'
RADIUS
A
B
B
70° MIN. / 110° MAX.
10' MIN.
6' MIN.
20' LANDING AREA (MIN.)
MAX. 4% SLOPE
EXIST. SHOULDER
EXIST. SHOULDER
A
EDGE OF PAVEMENT
EDGE OF PAVEMENT
CULVERT
(IF REQUIRED)
MDOT B2 CONCRETE
CURB AND GUTTER
***TYPICAL COMMERCIAL DRIVEWAY
WIDTH SHALL BE 30'. USES
DETERMINED TO GENERATE MINIMAL
TRIPS CAN BE REDUCED TO 24'. USES
DETERMINED TO GENERATE
EXCESSIVE TRIPS MAY BE REQUIRED
TO BE INCREASED TO 40'. THIS WILL BE
DETERMINED AT THE DISCRETION OF
THE ROAD COMMISSION ENGINEER.
DRIVEWAY 30' TYP. WIDTH***
SURFACE TO BE HOT MIXED
ASPHALT PLACED AT A RATE
OF 330 LBS PER SYD (2
LAYERS AT 165# PER SYD)
