20170239 Ver 1_Question regarding 72 CSP on SR 1921 - U-3109A_20180223

Carpenter,Kristi
From:Bailey, David E CIV USARMY CESAW (US)
<[e-mail]>
Sent:Friday, February 23, 2018 9:06 AM
To:Mason, James S; Norton, April R
Subject:\[External\] RE: Question regarding 72" CSP on SR 1921
(Mebane Rogers/Stage Coach Rd) - U-3109A
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Hi Jim, and thanks for the email/explanation. If the reason for replacing the culvert is
due to its current deteriorated condition, and the footprint of the new proposed culvert
would be basically in the same place, and length of the proposed culvert is justifiable
based on the current facility rather than the proposed facility, then it seems logical that
the culvert replacement could be done under a NWP 3 as a single and complete project.
Whether or not that would require notification through a PCN depends on the proposed
replacement structure. Are there any preliminary impact estimates?
-Dave Bailey

---
David E. Bailey, PWS
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US Army Corps of Engineers
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-----Original Message-----
From: Mason, James S \[mailto:[e-mail]\]
Sent: Wednesday, February 21, 2018 12:51 PM
To: Bailey, David E CIV USARMY CESAW (US) <[e-mail]>;
Norton, April R <[e-mail]>
Subject: \[Non-DoD Source\] Question regarding 72" CSP on SR 1921 (Mebane
Rogers/Stage Coach Rd) - U-3109A

Dave and April-

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Per the group discussion at the CP 4C meeting last week for U-3109B, Congestion
Management reviewed the possibility about whether the culvert on Mebane Rogers
Rd/Stage Coach Rd would need to be impacted due to the need to add a turn lane. This
was in the footprint of U-3109A, but we were not sure whether we would request a
modification to the A Section or include any potential work as part of the B Section.
They have reviewed the project design and have determined the following:

"The current design on the A section on a westbound approach of Mebane Rogers Rd.
consisting of a single left turn lane, a thru lane, and a right turn lane (3 lanes total)
should be sufficient based on the 2040 forecast. Even if there is excessive queueing in
the future, this can be mitigated by having the through lane share a left or right and the
current proposed design on the A section already has a through lane shared with a left
turn. Based on these recommendations, the existing 72" CSP will not need to be
impacted and the culvert design will not need to be added to the B section (or the A
section) as we discussed during the meeting last week."

Therefore, there is no plan to impact the culvert due to the addition of a turn lane to the
project. However, the culvert condition has been assessed recently and it is not in good
condition. Therefore, the Division would now like to replace the culvert due to its
deteriorated condition rather than due to congestion management-related issues. If
NCDOT were to replace this culvert, I wanted to ask whether it would be acceptable to
permit this as a permit modification to Section A of the project?

If you could email me back when you have an opportunity it would be much
appreciated.

Thanks,

Jim

Jim Mason

Environmental Program Consultant

Environmental Coordination and Permitting - Western Region

Environmental Analysis Unit

North Carolina Department of Transportation
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