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Home My WebLink About2020-01-14 ACHD Meeting Comments Charlene Way From:Alan Tiefenbach Sent:Thursday, January 14, 2021 4:55 PM To:Adrienne Weatherly; Charlene Way; Chris Johnson Subject:FW: Tetherow Crossing Meeting 1/14 MPP20-0038 H-2020-0112 ACHD comments on Tetherow Crossing Alan Tiefenbach | Current Associate Planner City of Meridian | Community Development Dept. 33 E. Broadway Ave., Ste. 102, Meridian, Idaho 83642 Phone: 208-489-0573 | Fax: 208-489-0571 Built for Business, Designed for Living From: Brenna Garro <BGarro@achdidaho.org> Sent: Thursday, January 14, 2021 3:04 PM To: Tim Mokwa <tmokwa@hayden-homes.com> Cc: Ross Erickson - Erickson Civil, Inc (ross@ericksoncivil.com) <ross@ericksoncivil.com>; Alan Tiefenbach <atiefenbach@meridiancity.org>; Eric Scheck <escheck@hayden-homes.com> Subject: Tetherow Crossing Meeting 1/14 MPP20-0038 H-2020-0112 External Sender - Please use caution with links or attachments. Hi Tim, Thank you for meeting over Teams today. I wanted to send a follow up email to summarize ACHD’s position on the Tetherow Crossing subdivision shared access driveway. While we do understand the City Council’s concerns, ACHD does not recommend that the shared access driveway become a public stub street. The corner lot in question is zoned commercial and ACHD does not want to mix the commercial and residential traffic as the traffic generated for the commercial property would negatively affect the Tetherow Crossing Subdivision. Additionally, the stub street that City Council recommends would need to extend through the corner site and connect to Eddington Commons stub street to the north of the corner property or the two stub streets (Tetherow Crossing and Eddington Commons) would terminate as a cul-de-sac. Both options would take up a lot of space and are not recommended by ACHD. As for the corner lot, this is an interesting site to develop. There are already two access points to the site. One located on the site’s north and west corner property line and the other located 185-feet (to centerline) from the site’s east property line. Depending on the future development, one of the access points may be required to be closed. There is also access to this site via the Eddington Commons Subdivision to the north. Attached, below my signature, is the District’s access policy for reference. Here is the link to ACHD’s policies: https://www.achdidaho.org/Documents/ACHDpolicyManual/7000to9000/Section7200_TechnicalRequirements.pdf Have a great rest of your day! 1 Cheers, Brenna Garro Planner, Development Services Ada County Highway District Phone: (208) 387-6346 bgarro@achdidaho.org 7205.4 Access Considerations and Requirements 7205.4.1 Access Points All access points associated with development applications shall be determined in accordance with the policies in this section and Section 7202. Access points shall be reviewed only for a development application that is being considered by the lead land use agency. Approved access points may be relocated and/or restricted in the future if the land use intensifies, changes, or the property redevelops. 7205.4.2 Signalized Collector Street Intersection Spacing on Minor and Principal Arterials Minor and Principal Arterials The optimum spacing for new signalized collector roadways intersecting minor arterials is one half-mile. In order to maintain the function of the arterial street system, the goal is to allow no more than one signal per mile (with connectivity within the square mile to that signal location). The spacing of signalized intersections on arterials is critical to traffic progression and the optimization of the arterial street system. Deviations from the ½ mile spacing may be considered: • To accommodate the design and layout of an existing collector street system. • Within existing central business districts. • If specified by an adopted Corridor Study or Specific Area Plan. • If there are no other reasonable site design, access or circulation alternatives eliminating the need for a signal; and if there is a proven public necessity for the intersection; and a traffic signal study and traffic analysis reviewed and approved by the District verifies the need. 7205.4.3 Local Street Intersection Spacing on Arterials New local streets should not typically intersect arterials. Local streets should typically intersect collectors. If it is necessary, as determined by ACHD, for a local street to intersect an arterial, the minimum allowable offset shall be as identified in Tables 1a and 1b below. 7205.4.4 Number of Driveways on Arterials The intent of this policy is to limit the number of access points to those that are warranted or necessary to serve the development, while maintaining the function and performance of the arterial. The guidelines below shall be used when more than one access point is being requested with a development. Additional driveways may be considered when one or more of the following conditions are met: • The daily volume using one driveway exceeds 5,000 vehicles (total volume for entering and exiting traffic). • Traffic using one driveway exceeds the volume to capacity ratio (v/c) equal to or greater than 1, of a STOP controlled intersection during either the peak hour of the street or the peak hour of the site traffic generation. • A District approved traffic impact study and analysis determines that conditions warrant additional driveways. 7205.4.5 Driveway Spacing on Minor Arterials from Existing or Future Signalized Intersections To determine if there is a single or dual left turn lane planned, refer to the ACHD Capital Improvement Plan (CIP). If the intersection is not listed in the CIP, then assume a single left turn lane. Dimensions shall be measured from the centerline of the intersection to the centerline of the driveway. Single Left Turn Lane If a driveway is approved by the District based on the policies listed above, then driveways located near a signalized intersection with an existing or planned single left turn lane shall be located: • A minimum of 330-feet from the intersection for a right-in/right-out driveway; and • A minimum of 660-feet from the intersection for a full-movement driveway. 2 Dual Left Turn Lane Driveways located near a signalized intersection with an existing or planned dual left turn lane shall be located: • A minimum of 330-feet from the intersection for a right-in/right-out driveway; and • A minimum of 710-feet from the intersection for a full-movement driveway. 7205.4.6 Driveway Spacing on Minor Arterials (away from a signalized intersection) • Direct lot or parcel access to a minor arterial is typically prohibited. • If a property has frontage on more than one street, access shall be taken from the street having the lesser functional classification. • Driveways located on an arterial may be prohibited when the property has frontage on one or more other public streets. • For property with frontage on more than one street, access shall be provided from the street having the lower current or projected Average Daily Traffic Volume (ADT), and/or the lesser functionally classified street (i.e. frontage on arterial and collector, access shall be from collector). ACHD shall determine which street has the lower volume. If it is necessary to take access to the higher classified street due to a lack of frontage, the minimum allowable spacing shall be based on Table 1a below. The spacing shall be measured from all other existing or approved driveway or intersecting street on either side of the Minor Arterial. 7205.4.7 Driveway Spacing on Principal Arterials • Direct lot or parcel access to a principal arterial is typically prohibited. • If a property has frontage on more than one street, access shall be taken from the street having the lesser functional classification. • Driveways located on arterials may be prohibited when the property has frontage on one or more other public streets. • For property with frontage on more than one street, access shall be provided from the street having the lower current and projected Average Daily Traffic Volume (ADT), and/or the lesser functionally classified street (i.e. frontage on arterial and collector, access shall be from collector). ACHD shall determine which road has the lower volume. • If it is necessary to take access to the higher classified street due to a lack of frontage, the minimum allowable spacing shall be based on Table 1b below. The spacing shall be measured from any other existing or approved driveway or street on either side of the street. 3