20170402 Ver 1_Beaufort 88 Attachment G and L signed_20170405

Attachment L: Low Impact Bridge Replacement Process
Low impact Bridge Project No.: 17BP.2.R.75 County: Beaufort
Bridge No. 88 over Horsepen Swamp WBS Element Number 17BP.2.R.75
This project is subject to the Low Impact Bridge Process as agreed to on October 6,
2009. This project meets the documentation requirements and approval procedures
under NEPA, as defined by FHWA, for Low Impact Bridge Replacements. This project
meets the standards of NCDOT's Minimum Criteria Rules.
Date:
Applicant Name:
Applicant Address:
Aoril 4. 2017
North Carolina Deaartment of Transportation
P.O. Box 1584
Greenville NC 27835
Primary Contact for Project: Hon Yeuna
Phone No.: 252-249-2800
Is this an after-the-fact application: Yes X No
River Basin:
Stream Classification:
Tar-Pamlico
C: Sw. NSW
Regulatory Authorization Options for this Activity
Federal: USACE Nationwide General Permit 3— Maintenance
State: General Water Quality Certification #3687 and/or Buffer Authorization
Local: None
ProjeCt Description — State project 176P.2.R.75 involves the replacement of Beaufort County Bridge
#660088 on SR 1414 (Horsepen Swamp Rd.) over Horsepen Swamp. The existing bridge consists of 1@ 16' -
1", 1@ 14' - 7", t@ 15' - 0" and 1@ 16' - 1" timber deck spans on timber joists and is to be replaced with a 1
@ 70' - 0", 24" cored slab bridge (70' total Iength, 33' total width) at the same location. In accordance with Tar-
Pamlico River Buffer Regulations, the proposed bridge does not contain deck drains. All stormwater from the
bridge and approaches will be collected by a storm drainage system and discharged into wetland. The drainage
system will outlet outside of the buffer limits in the southeast quadrant at -L- station 14+60 RT with the outlet
pipe set at 0.3% to reduce velocity into the wetland. Northwest quadrant ditch discharges directly into the
wetland at -L- station 12+80 LT with rip rap set at 0.0% to reduce velocity into the wetland. The southwest
quadrant ditch design maintains the existing drainage pattems along Horsepen Swamp.
Signature: �( � // "!/
Print Name: Hon Yeunq
Title: Proiect Enqineer

Low/Minimal Impact Bridge Project Data Sheet
TIP NO 176P.2.R.75
WBS Element No. 176P.2.R.75
Stream
Existing Structure
Proposed Structure
Stream
Wetlands
T&E
Moratorium
Trout Waters
Location
Comments
Completed by:
Description
Basin
Classification
SIN
Type
Size
Type
Size
Suff. Rating
Type
USACE Impacts (AC)
Non 4041mpacts (AC)
Species Present
Bio Conclusion
Trout Species Present
Trout Conditions (Y/N)
WRC Reviewer
AECs
Area
SR 1414 Horsepen Swamp Rd
Tar-Pamlico
C; Sw, NSW
28-103-10
perennial/inland
62'
31.89
fR.7
0'
.06
0
0
Zone 2 -
N/A
N/A
N/A
N/A
N/A
No
No
-77.1