Chapter 1340 - Driveways - Design Manual M 22-01 · Web viewThis chapter describes the design...

Chapter 1340 Driveways1340.01 General1340.02 References1340.0302 Design Considerations1340.0403 Driveway Design Templates1340.0504 Sidewalks1340.0605 Driveway Sight Distance (Eye height – 3.5 ft., Object height – 3.5 ft.)1340.0706 Stormwater and Drainage1340.0807 Mailboxes1340.0908 Documentation1340.09 References

1340.01 GeneralFor the purpose of this chapter, and to remain consistent with WSDOT’s Standard Plans and AASHTO terminology, the terms “access” and “approach” will be referred to as “driveway.” An access on a managed access highway is defined as an “access connection,” while an access on a limited access highway is defined as an “approach.”

This chapter describes the design guidelines, including sight distance criteria, for driveway connections on the state highway system. WSDOT controls driveways on all limited access state highways, and regulates driveways on all managed access state highways outside the incorporated limits of a city or town. RCW 47.50.030 states that cities and towns, regardless of population size, are the permitting authority for managed access state highways within their respective incorporated city and town limits. The RCW also requires those cities and towns to adopt standards for access permitting on managed access state highways that meet or exceed WSDOT standards, provided those adopted standards are consistent with WSDOT standards.

Limited access highways are roadways to which WSDOT has acquired the access rights from abutting property owners. Driveways, if they have been allowed, are documented and recorded in a the deed and right-of-way limited access plan. Chapter 530 describes the three levels of limited access highways: full, partial, and modified. Any change to the number, type, and use of a limited access driveway must be approved by Headquarters through the process outlined in Chapter 530 and Chapter 550. A general permit is required to allow any new construction or repairs for a deeded driveway road approach on a limited access highway. Access connection permits are not issued on limited access highways.

WSDOT Design Manual M 22-01.10 340-1July 2013

John Tevis, 06/19/19,

Moved to bottom like normal.


Same as first comment.

Patterson, LeRoy, 08/06/19,

approach


Done.

Barben-Price, Leslie, 07/17/19,

Add “and Chapter 550”


Same as first comment.


Approach


And right of way limited access plan


I don’t know why the Chapter name and all the references to road approach changed to “driveway” but instead of changing the name back to road approach, I think it would be better to split this chapter into both Road approaches and driveways separately.


Approaches

http://apps.leg.wa.gov/RCW/default.aspx?cite=47.50.030

http://www.wsdot.wa.gov/Publications/Manuals/M21-01.htm

Any roadway state highway that is not a limited access highway is a managed access highway. Chapter 540 describes the five classes of managed access highways: Class 1 (most restrictive) to Class 5 (least restrictive). In addition to the five access control classes, there are also corner clearance criteria that must be used for access connections near intersections (see Section 540.04 and Exhibit 540-2). An access connection permit is required to allow the use, operation, and maintenance of a driveway connection on a managed access highway, outside incorporated cities, where WSDOT is the access permitting authority. Check with Development Services to ascertain where WSDOT has permitting authority (such as tribal lands or National Parks).

1340.02 References

1340.02(1) State Laws and Codes

Revised Code of Washington (RCW) 47.32.150, Approach roads, other appurtenances – Permit

RCW 47.32.160, Approach roads, other appurtenances – Rules – Construction, maintenance of approach roads

RCW 47.32.170, Approach roads, other appurtenances – Removal of installations from right-of-way for default

Chapter 47.50 RCW, Highway access management

Chapter 47.52 RCW, Limited access facilities

Chapter 468-51 Washington Administrative Code (WAC), Highway access management access permits – Administrative process

Chapter 468-52 WAC, Highway access management – Access control classification system and standards

Chapter 468-58 WAC, Limited access highways

1340.02(2) Design Guidance

Right of Way Manual, M 26-01, WSDOT

Standard Plans for Road, Bridge, and Municipal Construction (Standard Plans), M 21-01, WSDOT

Development Services Manual, M 3007, WSDOT

Limited Access and Managed Access Master Plan, WSDOT www.wsdot.wa.gov/design/accessandhearings/tracking.htm

1340.0302 Design Considerations

1340.0302(1) General

The design of a driveway is based on the usage, design vehicle, and traffic volumes anticipated for the driveway. Generally, the driveway should be designed to accommodate the largest vehicle that will regularly use the driveway. For example, a residential driveway connection will typically have smaller radii and a narrower access width than a higher-volume commercial driveway.

However, if the property owner regularly has larger-wheelbase vehicles using the driveway, such as a home-based work vehicle, recreational vehicle, or truck and boat trailer combination, then a larger driveway may be appropriate.

WSDOT Design Manual M 22-01.10 Page 1340-2July 2013


We will leave it as we are trying to cover all types of recreational vehicles.

McDonnell, Leonard, 07/31/19,

(Motorhome)


Section 1340.02 was all moved to the end making it 1340.09 where references normally are.


To bring up corner clearance.


Done. “state highway”


State Route or state highway?

http://www.wsdot.wa.gov/design/accessandhearings/tracking.htm

http://www.wsdot.wa.gov/Publications/Manuals/M3007.htm



http://apps.leg.wa.gov/WAC/default.aspx?dispo=true&cite=468-58&full=true

http://apps.leg.wa.gov/WAC/default.aspx?cite=468-52


http://apps.leg.wa.gov/RCW/default.aspx?cite=47.52





Driveways Chapter 1340

Conversely, some driveways, such as a rural locked and gated utility, farm, or logging access that larger vehicles sometimes use, may be better served with a smaller and narrower access. This is based on infrequent use and to prevent unauthorized use or dumping of debris on or near the driveway. Other design considerations are:

• Prevent stormwater from flowing onto the roadway from the driveway.

• Properly size culverts under the driveway to adequately accommodate the conveyance of stormwater in the roadway ditches and swales.

• Provide driveway sight distance.

• Accommodate for mailbox placement.

• C oordinate with Region Materials Engineer for pavement design. Ensure surfacing materials and depths are appropriate.

• Generally, extend paving to the right of way line depending on the location/purpose of the driveway. The desirable intersection angle of the a driveway is 90°, with a skew of up to 60° to 120° allowed.

1340.0302(2) WSDOT Projects Under Managed Access Control

When evaluating access connections or approaches on a project, review existing driveways for possible alterations, relocations, consolidations, or closures. The first step in that process is to determine the legality of the driveway. The region Development Services Office can provide a list of the permitted driveway connections on a managed access highway, noting that, per RCW 47.50.080, Permit removal, “Unpermitted connections to the state highway system in existence on July 1, 1990, shall not require the issuance of a permit and may continue to provide access to the state highway system, unless the permitting authority determines that such a connection does not meet minimum acceptable standards of highway safety.” As a result, driveway connections on a managed access state highway can be considered to be permitted, grandfathered, or unpermitted as described below:

• Permitted driveways hold a valid permit and shall remain valid until modified or revoked.

• Grandfathered driveways that were in existence and in active use consistent with the type of connection on July 1, 1990, may continue to provide connection to the state highway system. The term “Grandfathered” driveway, or connection, is not a term defined in statute or rule. It is a commonly used term to define legal connections to managed access state highways, in place prior to July 1, 1990. They do not require the issuance of a new permit and may continue to provide access to the state highway system, unless the permitting authority determines that such a connection does not meet minimum acceptable standards of highway safety.

• Unpermitted driveways are not allowed. The permitting authority may initiate action to close the unpermitted driveway in compliance with the applicable chapters of 47.50 RCW and 468-51 and 468-52 WAC. These are driveways that do not have a permit and were constructed after July 1, 1990.

If a WSDOT project proposes to alter, relocate, consolidate, or close a driveway—regardless of whether the driveway is permitted, grandfathered, or unpermitted—it is required that a new access connection permit be issued for any driveways that are to remain. If a driveway is to be removed, formal notification to the property owner will be provided as specified in WAC 468-51-040. Unless determined otherwise, the affected property owners of driveways that will be altered, relocated, consolidated, or closed will not have the right of an aAdjudicative

Page 1340-4 WSDOT Design Manual M 22-01.10July 2013


????


Adjudicative Hearing


Good idea. Done.

De Ste. Croix, Barbara, 07/11/19,

Could we add this clarification?


Under Managed access control


This is the best way to determine pavement design.

http://apps.leg.wa.gov/wac/default.aspx?cite=468-51-040

http://apps.leg.wa.gov/wac/default.aspx?cite=468-51-040

http://apps.leg.wa.gov/wac/default.aspx?cite=468-52

http://apps.leg.wa.gov/wac/default.aspx?cite=468-51




Chapter 1340 Driveways

Hearingproceeding. Additional information regarding this process can be obtained by contacting your region’s Development Services Office.

On limited access highways, both the region Development Services and Real Estate Services offices may provide assistance to determine the legality of an existing driveway. Federal Highway Administration approval is required for driveway modifications on Interstate facilities.

1340.0403 Driveway Design TemplatesThere are two driveway design templates for use where there is no adjacent sidewalk. (When a driveway connection has or will have adjacent sidewalk, see 1340.05Section 1340.04.) In both template designs the sideslopes of the driveway shall not be steeper than 6H:1V. These templates may be used on both limited access and managed access state highways. If an Interstate limited access driveway is allowed, it must be gated. U se the design template dimensions that will accommodate the intended use of the driveway and will not adversely affect the operations of the traveled way of the state highway. See Chapter 530 and Chapter 550 for documentation requirements for access approaches to limited access facilities. Design driveways with as small a foot print as possible while accommodating the design vehicle specific to that driveway. Use turn simulation software (such as AutoTURN®) to verify the driveway design will accommodate the largest vehicle that will regularly use the driveway. Considering the context of use, Exhibit 1340-1 is generally used for private, special use, and low volume commercial driveways with design vehicles of SU-30, BUS, and smaller. , while Exhibit 1340-2 is generally used for low volume commercial and special use driveways with design vehicles of SU-30, BUS, and larger.

Driveways to developments with enough greater than 1,500 (estimated) average daily trips both entering and exiting the development (shopping malls, housing developments, commercial complexes, etc.) should be designed as an intersection leg (see Chapter 1310).

Use the design template detentions that will accommodate the intended use of the driveway and will not adversely affect the traveled way of the state highway. If necessary, use turn simulation software (such as AutoTURN® ) to verify the driveway design will adequately accommodate the largest vehicle that will regularly use the driveway.



Moved up into the previous paragraph.


I made the text changes. I think I’ll wait to see if anyone else wants a significant trigger.

Zeller, Scott, 07/11/19,

Suggested rewording:Driveways to developments with significant traffic volumes (shopping malls, housing developments, commercial complexes, etc.) should be designed as an intersection leg (see Chapter 1310). May need to define significant (1500 vehicles daily entering/exiting??)

Frostad, Larry, 08/02/19,

I agree with your thinking. 1500 is already cited in 1340.06, and it fits 540.05(3) Category III Access Connection


Is this better? This is setting policy. Do you and your traffic people agree?

Olson, Ken (Eastern Region), 07/31/19,

DM 1340.06 uses 1500 AVWDTE to start using I/S sight distance and 540.05 uses that measure between connection categories.


How much is in the range of “enough traffic?”


Added to include driveways that are similar to cross road intersections.


We have not heard of this criteria. We will look in to it for the next update.

Curt Winningham, 07/31/19,

This is too vague. When determining the need for ADA ramp improvements at driveways, we use the following: If there are no parking spaces directly accessed from the driveway, we treat it as an intersection leg. If parking spaces are directly accessed from the driveway we consider it a driveway.


Yes.


Low volume?


Good idea.


Maybe add “low volume” before commercial?


Done.


I think this was covered up above. Though a reference somewhere to Chapter 550 would be good.


Start a new paragraph to emphasize the use of software or turning tempates from AASHTO.


This was moved up from below so it is not as hidden.


We added it to the last paragraph in 1340.01 General.


Should we be cross referencing to Chapter 540 for placement of the driveways being designed? I think of corner clearance.


Notes: [1] Culvert pipe with beveled end treatment (see Chapter 1600). See Hydraulics Manual, Road Approach and Driveway Culverts for details. [2] When the travel lanes are bituminous, a similar surface may be used on the approaches. [3] For mailbox location and type, see Section 1340.07 and Chapter 1600.[4] Not to exceed ±8% maximum algebraic difference from shoulder slope. [5] Vertical alignment not to exceed a 3¼-inch hump or a 2-inch depression in a 10-foot chord



Rewritten to be clear.

Tobin, Kevin, 08/02/19,

Conflict with figure that shows +/-6%.

Olson, Ken (Eastern Region) [2], 08/01/19,

[5] is usually an angle point at the edge of shoulder (we don’t run vertical curves into the shoulder). The Note [4] +/- 8% achieves the goal of note [5] (actually it exceeds the depression goal of 2”, but it meets the “Guide for the Geometric Design of Driveways” typical angle point of +/- 9% page 70). Therefore we should remove the note [5] at the edge of shoulder and only apply it to the alignment approaching the landing. John Tevis, My mistake. I removed arrow to edge of shoulder.Does there need to be a discussion about Cement Concrete Driveway Entrances?John Tevis, Yes. There should be a lot of things from NCHRP 659 about urban driveways but we don’t have time now or in December Maybe next years. What do you think.City of Spokane uses a typical 10% absolute grade on one of their Standard Planshttps://static.spokanecity.org/documents/business/designstandards/standard-plans-f-2018-11-29.pdfOur Standard Plan F-80.10-04 Type 2 is similar and will often not meet either the +/8% or the 6% max or the 10 ft chord limits.John Tevis, Correct another reason to bring in NCHRP 659.Note [4] should say “Not to exceed +/- 8% maximum difference from the shoulder.” This would make it more apparent that it modifies the 6% and is not its own standard.John Tevis, Excellent. Done.


Most of these notes are new because of adding the vertical alignment.

McDonnell, Leonard [2], 08/01/19,

Please indicate that these are cross section drawings. John Tevis, Done.Could we also pencil in a culvert below 6%? John Tevis, I took the pipe out of 1340-2 because people were getting confused about what pipe we were describing. So, we could but then we would need a not saying that the pipe matches the ditch so it could be anywhere in the 20’ area. So, we really can’t add it. It was a stretch to add it to the plan view. We could add an indication of the Right of Way line on the right side of the 20 foot min. area.John Tevis, The Right of way could be anywhere from the edge of shoulder to as far right as it goes. So, we can’t show it in the profile.


We are trying not to show the culvert in this profile to keep it simple.

Barb De Ste Crox, 07/24/19,

No culvert pipe shown below the +/- 6% max line.


Yes. There could be a conflict in note [5] because I also pointed at the shoulder angle point that is accounted for in note [4]. We will remove the note [5] arrow to the shoulder angle point.


Note 4 says difference between shoulder slope & driveway vertical alignment max is +/- 8%. But, Note 5 says vertical alignment NTE 3-1/2” hump or 2” depression in 10’. Are these in conflict?


Added vertical alignment guidance.


Good idea we will. A good number 4 line.


Please add a real LINE at the edge of the drawing, at the end of the arrow for Right of Way Line.


Even if the roadway is in a +10% super (worse case) and the roadway is lower than the adjoining property, you can determine a vertical curve to get you from =10% to -1% in 10ft. to drain away from the roadway. Then continue the -1% to just above the pipe in the roadside ditch and slope the pavement so the water runs towards the ditch.


Runoff arrows indicating flow away from roadway not always the case as in high side of super elevation or when is roadway lower than adjoining property.


Thank you everyone for your help with this Exhibit.


Driveway Design Template SU-30 and SmallerExhibit 1340-1



That is the plan. Thanks.

Lamsek, Ann Marie, 07/16/19,

Is it possible to fit the notes onto the same page as the rest of Exhibit 1340-1? Exhibit 1340-2 is all on one page, making it easier to use.


Notes: [1] Culvert pipe with beveled end treatment (see Chapter 1600). See Hydraulics Manual, “Private Road Approach and Driveway Culverts” for details.[2] When the travel lanes are bituminous, a similar surface may be used on the approaches. [3] For mailbox location and type, see Section 1340.07, Chapter 1600.[4] Not to exceed ±8% maximum algebraic difference from shoulder slope. [45] Vertical alignment not to exceed a 3¼-inch hump or a 2-inch depression in a 10-foot chord.[56] Check turning template of driveway design vehicle

Driveway Design Template SU-30 and LargerExhibit 1340-2



Fix spelling of “Hydraulics” (not Hydrolics).John Tevis, Removed.


“Hydrolics” spelling. Removed.Why note handle the angle point Note[4] with the same note [4] as above? Yes. Done.


Some of these notes are new because of adding the vertical alignment.


Modification After Region Review: Changed to ± 10% per NCHRP 659, Exhibit 5-67, 0 for largest reported slope of Commercial Driveways. Removed catch basin, pipe, & curb as people were getting confused between the catch basin pipe and the pipe under the road approach. Added 8% section length.


Yes.


Shouldn’t this say “Tie into driveway” or some similar text? If this is a new driveway, there won’t be an existing one to tie to.


Added vertical alignment guidance.


Thank you everyone for your help with this Exhibit.


Use the design template that will best accommodate the intended use of the driveway, unless a smaller driveway is appropriate and will not adversely affect the traveled way of the state highway. If necessary, use turn simulation software (such as AutoTURN®) to verify the driveway design will adequately accommodate the largest vehicle that will regularly use the driveway.

1340.0504 SidewalksDriveways adjacent to sidewalks shall be designed and constructed in accordance with this chapter and If a driveway connection has (or will have) adjacent sidewalk, use the applicable Cement Concrete Driveway Entrance Standard Plan F-80.10. Driveway width will be as statedand width issued on the access permit. The sidewalk shall be designed and constructed in accordanceThe design and construction of any sidewalk shall be compliant with Chapter 1510 and Section F of the Standard Plans, in addition to the latest Americans with Disabilities Act criteria..

1340.0605 Driveway Sight Distance (Eye height – 3.5 ft., Object height – 3.5 ft.)

A driver on the highway needs to see far enough ahead to assess seeunderstand, react, developing situations and take actions appropriate for the conditions, such as when a vehicle that is either entering or leaving the highway at a driveway. In addition, drivers entering the highway from a driveway also need to see enough of the highway, whether to the left and/or right, so they can take actions appropriate for the conditions to enter the highway in a reasonably safe manner.

Design and locate driveways such that the sight distances, based on an eye height of 3.5 feet and an object height of 3.5 feet, meet or exceed the distances shown in Exhibit 1340-3; these distances may require an approaching vehicle to reduce speed or stop to prevent a collision. In addition, provide decision sight distance for through traffic at all utility and special-use driveways on facilities with limited access control (see Chapter 1260). For road approaches with AWDVTE greater than 1,500, use intersection sight distance criteria (see Chapter 1310). Areas The sight triangle areas created by the sight linesalong driveway legs and across their included corners should be clear of sight obstructions that might block or affect a driver’s view of potentially conflicting vehicles. See Exhibit 1340-3.

U se intersection sight distance (see Section 1310.05) for road approaches with greater than 1,500 (estimated) average daily trips both entering and exiting the development at full build out.



Explaining our way out of using “AWDVTE”.


Good idea. Done.


Show sight triangle areas on Exhibit 1340-3 to make it clear where they are. I am not sure if I am visualizing them correctly.


Using the term sight triangles.


Moved from title


“safe” is also subjective as what I think is safe is probably different than you think is “safe” and no open road is “safe”. We thought about changing it to “relatively safe” but that is no better as relative to what? We will keep it for now.


How is “reasonably” defined here? Shouldn’t this just say, “…in a safe manner.”? “Reasonably” is a subjective word that could be interpreted in different ways.


Moved down into the text.


We think that if a driveway needs barrier it is covered in the 1600s chapters. Plus, if we started talking about barrier here, were would we stop?


Suggest adding reference for this DM section or adding a new section covering guardrail at driveways. This is a challenging design process that should at least be given a reference to the DM guardrail chapter.


I like your text better.


Suggested wording:Driveways adjacent to sidewalks shall be designed and constructed in accordance with this chapter and Standard Plan F-80.10. Driveway width will be as stated on the access permit. The sidewalk shall be designed and constructed in accordance with Chapter 1510 and Section F of the Standard Plans.


We’re thinking that if the access permit is correct based on the design vehicle, it should work as an intersection as permitted. If the permit is incorrect based on the design vehicle it should be repermitted.


Unless it is being designed as an intersection leg?


Moved up into the first paragraph in this section.


http://www.wsdot.wa.gov/publications/fulltext/Standards/english/PDF/f80.10-02_e.pdf


Mainline Posted Speed Limit (mph) 25 30 35 40 45 50 55 60 65 70

Driveway Sight Distance (ft)Eye and object height 3.5 ft.

155 200 250 305 360 425 495 570 645 730

Notes:[1] Measured from the edge of the mainline throughtraveled way lane to the drive’s eye. If the desirable

18-foot setback to driver’s eye cannot be achieved, obtain as much as practicable, down to a 10-foot minimum.

[2] Not required for driveways that are restricted by raised channelization to right ins and/ right outs only.

Driveway Sight DistanceExhibit 1340-3

1340.0706 Stormwater and DrainageSlopeDesign a driveways to slope away from the highway for a distance to prevent stormwater and runoff and other debris from flowing onto the highway traveled lanes and shoulders of the highway. Use of If this is not feasible, then other measures may be necessary to curbs, catch basins, or other measures may be needed to divert the stormwater where it is not feasible to slope the driveway away from the traveled lanes and shoulder of the highway. Locate catch basins outside of the vehical paths of the driveway.



This is good. I added “outside of the vehical paths of the driveway” instead of “outside of the driveway”.What do you think?


Suggested wording.Slope driveways away from the highway to prevent stormwater and other debris from flowing onto the highway traveled lanes and shoulder. Use of curbs, catch basins, or other measures may be needed to divert stormwater where it is not feasible to slope the driveway away from the highway. Locate catch basins outside of the driveway


We never want water from outside of the roadway to drain across the roadway. That is why we have roadside ditches. Please see my explanation to you first commet.


Not always possible to have flow path away from roadway for instances when roadway is lower than adjoining property.


Much better thanks.


[2] For driveways that are restricted by raised channelization to right ins and right outs only.

Barben-Price, Leslie [2], 07/31/19,

This seems fairly loose. Would you like any supporting documentation? Up above you were a bit stronger in expectations.


I agree with both of you. What do you think of the new one. I think it is better than Exhibit 1310-19a.


DM For Intersections 1310.05 says to use Exhibit 1310-19b for measurement of sight triangles. 1310-19b defines the position of the sight line at the car differently. If we want driveway sight to be defined differently than intersections then we should actually state that fact. These look to be clearly defined to fog line and left edge line at front bumper, but only graphically. AASHTO has lots of sight distance discussions and lots of drawings that are not very clear. I’d like us to be clear. I’d also like us to always refer to 1310-19b (1310-19a needs to refer to 19b too). However, if we want driveway to be different, lets spell it out.


These sight lines as drawn do not match those laid out in Exhibit 1310-19a, or 1310-19b of the intersection chapter of the Design Manual. It would be preferable to be consistent.


If the driveway will in any way interfere with the flow of stormwater in an existing ditch or swale located on the state highway right of way, iInstall a culvert with beveled ends (see Chapter 1600). Choose a culverts sized in accordance with that will adequately handle the stormwater (see the Highway Runoff Hydraulics Manual) if the driveway traverses an existing ditch or swale in the state highway right of way. Contact either the region Region hydraulic Hydraulic engineer Engineer or the applicable region Region maintenance Maintenance office Office for assistance. Consider placing quarry spalls at each end of the open culvert to prevent erosion. If the installation of new culvert requires the installation of a catch basin, it is desirable to locate the catch basin outside the normal traveled way of the driveway.

Profile the road approach as shown in Exhibits 1340-1 or 1340-2 while ensuring that roadway runoff is not a problem. Design sideslopes of the road approach not steeper than 6H:1V. Locate culverts as far from the traveled way as possible. In Exhibits 1340-1 and 1340-2, roadway runoff can be a concern if the grade from the edge of shoulder to the right of way line and the slope parallel to the mainline is a flat or minus grade. If needed, a curb may be placed and if needed, a catch basin can also be placed as shown in Exhibit 1340-2. When considering a curb, see Chapter 1239 as allowable curb locations, heights, and offset distances can varyvery based on mainline speed. Construct road approaches and related areas such that they do not impair drainage within the right of way or alter the stability of the roadway subgrade.

1340.0807 MailboxesRefer to:

Chapter 1600, Roadside Safety, Mailboxes, for guidance regarding the placement of mailboxes.

Standard Plans, Mailbox Support Types, for mail box support types, and connections.

1340.0908 DocumentationRefer to Chapter 300 for design documentation requirements.

1340.09 References

1340.09(1) State Laws and Codes

Revised Code of Washington (RCW) 47.32.150, Approach roads, other appurtenances – Permit

RCW 47.32.160, Approach roads, other appurtenances – Rules – Construction, maintenance of approach roads



All of 1340.09 was moved from above.

Barben-Price, Leslie [2], 07/31/19,

Thanks.


vary


This was moved from her and put in Section1340.03 about the templates where the driveway sections are.


This whole paragraph is added for more drainage guidance.


This was moved to the beginning to not be so hidden.


Suggested wordingInstall beveled end culverts sized in accordance with the Highway Runoff Manual if the driveway will traverse an existing ditch or swale in the state highway right of way.


This is in the Hydraulics Manual not the Highway Runoff Manual.




RCW 47.32.170, Approach roads, other appurtenances – Removal of installations from right-of-way for default

Chapter 47.50 RCW, Highway access management

Chapter 47.52 RCW, Limited access facilities

Chapter 468-51 Washington Administrative Code (WAC), Highway access management access permits – Administrative process

Chapter 468-52 WAC, Highway access management – Access control classification system and standards

Chapter 468-58 WAC, Limited access highways

1340.09(2) Design Guidance

NCHRP 659 Guide for the Geometric Design of Driveways, AASHTO https://www.iowadot.gov/design/dmanual/03K-02/nchrp_rpt_659.pdf

Right of Way Manual, M 26-01, WSDOT

Standard Plans for Road, Bridge, and Municipal Construction (Standard Plans), M 21-01, WSDOT

Development Services Manual, M 3007, WSDOT

Limited Access and Managed Access Master Plan, WSDOT www.wsdot.wa.gov/design/accessandhearings/tracking.htm


http://www.wsdot.wa.gov/design/accessandhearings/tracking.htm

http://www.wsdot.wa.gov/Publications/Manuals/M3007.htm



https://www.iowadot.gov/design/dmanual/03K-02/nchrp_rpt_659.pdf

http://apps.leg.wa.gov/WAC/default.aspx?dispo=true&cite=468-58&full=true






Chapter 1340 - Driveways - Design Manual M 22-01 · Web viewThis chapter describes the design...

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