From: 	Tom Errico <thomas.errico@tylin.com>
To:	Jean Fraser <JF@portlandmaine.gov>
CC:	David Margolis-Pineo <DMP@portlandmaine.gov>, Jeff Tarling <JST@portlandmaine.gov>, "Earley, Katherine" <KAS@portlandmaine.gov>, Jeremiah Bartlett <JBartlett@portlandmaine.gov>
Date: 	2/21/2013 12:20 PM	
Subject: 	Old Barn Estates - Final Traffic Comments

Jean ‑ The following represents my final comments.

*        Based upon the scope of the project, a traffic study or Traffic Movement Permit is not required.

*        The applicant shall conduct a sidewalk waiver analysis for their proposed subdivision road (a sidewalk is proposed on one side only) and for the corner property at the Ocean Avenue/Middle Road/Ledgewood Drive intersection (only the frontage that is located in Portland).

January 17, 2013 Comment:  The applicant has submitted a sidewalk waiver analysis for several sections of roadways including Ice Pond Drive, the southwest side of Ledgewood Drive and a portion of Ocean Avenue.  My comments are noted below:

o   I concur that a sidewalk is not required along the southwest side of Ledgewood Drive given that the road is maintained by the Town of Falmouth and that a new sidewalk was recently constructed on the northeast side of Ledgewood Drive last summer.

o   I continue to review information and will coordinate with DPS on the submitted waivers for the other sidewalk sections.

Current Status: The following notes sidewalk requirements for Ice Pond Drive and Ocean Avenue.

o   Based upon a review of a curbing waiver analysis conducted by DPS for Ice Pond Drive (and that curbing is not required), I support a sidewalk waiver given that a sidewalk is being constructed on one side of the street and landscape/drainage features would be significantly impacted if a sidewalk is constructed.

o   I do not support a waiver for construction of a sidewalk on Ocean Avenue abutting house lot #14.  There is pedestrian activity between the sidewalk on Ledgewood Drive and the City's Dog Park and sidewalks to the west (Presumpscot Street).  I would suggest that the applicant make a financial contribution towards the installation of a sidewalk in the future.  Based upon a construction cost estimate from DPS, the applicant should make a $7,500.00 contribution towards the future construction of a sidewalk on Ocean Avenue.

*        Acceptable sight distance will be provided at the proposed driveway location on Ledgewood Drive.

*        I have reviewed Bill Eaton's traffic evaluation and I find it to be acceptable.

*        The driveway to Lot 13 will be located on Ledgewood Drive.  Given the sight distance evaluation conducted by the applicant, I find this condition to be acceptable.

*        The applicant shall provide an "auto‑turn" analysis at the driveway entrance using both a passenger car and a single‑unit truck to support the proposed radii size.

Current Status: I have reviewed the information submitted by the applicant (vehicle turning template graphic and Town of Falmouth radii standards) and find the proposed 30‑foot intersection radii to be acceptable given City of Portland Technical standards, the alignment of the proposed entrance road, and the results of the "auto‑turn" analysis.

*        Crosswalk warning signs complying with the MUTCD shall be installed at the new crosswalk on Ledgewood Drive.

Current Status: Outstanding

New Comments

*        The applicant is proposing a driveway for Lot 14 on Ocean Avenue. While I would prefer to have the driveway located on the minor street, or Ledgewood Drive, I find the proposed driveway location to be acceptable given the location and orientation of the existing garage/barn structure that is to remain on‑site. I would note that the City does not provide radii at single‑family driveways and the plans should be revised to reflect this. Lastly waivers from the City's Technical Standards are required as it relates to corner clearance and driveway spacing.  I support these waivers given site conditions.

If you have any questions, please contact me.

Best regards,

Thomas A. Errico, PE
Senior Associate
Traffic Engineering Director
[T.Y. Lin International]T.Y. Lin International
12 Northbrook Drive
Falmouth, ME 04105
207.347.4354 direct
207.400.0719 mobile
207.781.4753 fax
thomas.errico@tylin.com<mailto:thomas.errico@tylin.com>
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