Loading...
HomeMy WebLinkAbout20091149 Ver 1_Meeting Minutes_20080820 (2)Merger Project Team Meeting Agreement Concurrence Point No. 4A: Project Name & Description: Avoidance and Minimization Proposed Interchange at the Intersection of US 74/NC 130 (Andrew Jackson Highway) and NC 242 (Haynes Lennon Highway) near Evergreen, Columbus County TIP Project No.: R-4900 Federal Aid Project No.: NHF-74(78) WBS Element: 40224.1.1 The Merger Project Team has concurred on this date of August 20, 2008, on the following measures for Avoidance and Minimization for TIP Project R-4900: Avoidance As noted in the Environmental Assessment, complete avoidance of the stream and wetlands is not possible due to the presence of these resources in three of the quadrants surrounding the US 74/NC 130 and NC 242 intersection. Signalization and traffic calming techniques were considered as potential avoidance measures, but were dismissed as viable options because they would not permanently solve the safety problems. In addition, they were not in line with the long term vision for this facility. Given that US 74 is planned to be upgraded to an interstate facility with full control of access in the future, options were limited for choosing alternatives. Minimization Efforts • The standard diamond interchange was revised to a modified diamond interchange. The ramp in the northwest quadrant was eliminated to reduce impacts to a gum-cypress swamp wetland that had a higher quality rating than the one in the northeast quadrant. The ramp in the southeast quadrant was also eliminated in order to minimize wetland impacts. • The alignment of the proposed interchange was shifted away from the existing alignment in order to maintain traffic during construction and to prevent the existing culvert under US 74 from being affected. Impacting the culvert would lead to greater impacts to the stream and adjacent wetlands. • A two span bridge is currently proposed for the interchange, as opposed to a single span bridge. A single span bridge would avoid constructability issues that stem from placing a bridge pier in the vicinity of the existing culvert; however, the depth of the bridge superstructure (girders) and the height of the fill would be increased, thus increasing the horizontal footprint of the fill roadway in the wetland areas. Also, with a two span bridge, the lateral ditches that run parallel to US 74 can be spanned. USACE FHWA NCWRC USEPA NCDWQ NCDCR • NCDOT is having a cost analysis performed on the option of building the service road in the northeast quadrant of the proposed interchange versus purchasing the access to the parcel of land that this road would serve. If the service road is more expensive, NCDOT could avoid impacting these wetlands by removing the access to this property, thereby eliminating the service road. • Based upon NCDOT's site investigation, the culvert on NC 242 at Cow Branch was used as a control to begin the construction limits. The proposed roadway improvements along NC 242 begin south of the existing culvert, which eliminates the need for a culvert extension in this environmentally sensitive area. • Although 2:1 slopes in a wetland area are NCDOT's standard, the soils on this site are sandy. NCDOT is using 3:1 slopes in all wetland areas for this project, which is standard practice for projects east of I-95. NCDOT USFWS )/I C 2 v o..w r --A ???RRR .qw .f r t,.,,ffi' Y'' v 0 0 m °: w .. p C1 o .n m o N p.7? r W c m ? K _ Q O 0 f t ;c NEPA/404 MERGER TEAM MEETING CONCURRENCE POINT #4A & 4B Avoidance and Minimization 30% Hydraulic Review TIP Project R-4900 WBS No. 40224. 1.1 Federal Aid No. NHF-74(78) Proposed Interchange at the Intersection of US 74/NC 130 (Andrew Jackson Highway) and NC 242 (Haynes Lennon Highway) August 20, 2008 Century Center Hydraulics Conference Room Purpose of Today's Meeting: The purpose of this meeting is to reach concurrence on the avoidance and minimization measures taken during the planning and design of this project and to review the hydraulic recommendations. Project Development Engineer: Kristine 0. Graham, P.E. (919) 733-7844 x 311, kograham@ncdot.gov Project Description The North Carolina Department of Transportation (NCDOT) proposes to upgrade the intersection of US 74/NC 130 and NC 242 to an interchange (see Figure 1). The project will upgrade the existing at-grade intersection of a four-lane divided highway with a two-lane facility to a modified diamond interchange with two loops. These improvements are proposed to improve the safety of this intersection. This project is included in the approved 2009-2015 Transportation Improvement Program (TIP). The estimated TIP cost is $10,434,000, which includes $70,000 for mitigation, $664,000 for right-of-way acquisition, and $9,700,000 for construction. Right-of-way acquisition is scheduled to begin in January 2009 and construction is anticipated for July 2010. Avoidance and Minimization Avoidance As noted in the Environmental Assessment, complete avoidance of the stream and wetlands is not possible due to the presence of these resources in three of the quadrants surrounding the US 74/NC 130 and NC 242 intersection. Signalization and traffic calming techniques were considered as potential avoidance measures, but were dismissed as viable options because they would not permanently solve the safety problems. In addition, they were not in line with the long term vision for this facility. Given that US 74 is planned to be upgraded to an interstate facility with full control of access in the future, options were limited for choosing alternatives. Minimization Efforts • The standard diamond interchange was revised to a modified diamond interchange. The ramp in the northwest quadrant was eliminated to reduce impacts to a gum-cypress swamp wetland that had a higher quality rating than the one in the northeast quadrant. The ramp in the southeast quadrant was also eliminated in order to minimize wetland impacts. • The alignment of the proposed interchange was shifted away from the existing alignment in order to maintain traffic during construction and to prevent the existing culvert under US 74 from being affected. Impacting the culvert would lead to greater impacts to the stream and adjacent wetlands. • A two span bridge is currently proposed for the interchange, as opposed to a single span bridge. A single span bridge would avoid constructability issues that stem from placing a bridge pier in the vicinity of the existing culvert; however, 1 the depth of the bridge superstructure (girders) and the height of the fill would be increased, thus increasing the horizontal footprint of the fill roadway in the wetland areas. Also, with a two span bridge, the lateral ditches that run parallel to US 74 can be spanned. • NCDOT is having a cost analysis performed on the option of building the service road in the northeast quadrant of the proposed interchange versus purchasing the access to the parcel of land that this road would serve. If the service road is more expensive, NCDOT could avoid impacting these wetlands by removing the access to this property, thereby eliminating the service road. • Based upon NCDOT's site investigation, the culvert on NC 242 at Cow Branch was used as a control to begin the construction limits. The proposed roadway improvements along NC 242 begin south of the existing culvert, which eliminates the need for a culvert extension in this environmentally sensitive area. • Although 2:1 slopes in a wetland area are NCDOT's standard, the soils on this site are sandy. NCDOT is using 3:1 slopes in all wetland areas for this project, which is standard practice for projects-east of I-95. 2 HYDRAULICS DESIGN/PERMIT DRAWINGS REVIEW "REVISED" Hydraulics Conference Room NCDOT Century Center Complex August 20, 2008 9:00 Clawson R-2417AA, US 421/NC87 (Sanford Bypass) From West of SR-1400 (Cumnock Road) To East of US 1-15-501 Lee County, Division 8 4C Permit Drawing Review (4B Meeting held 6/15/05) Team Members: Richard Spencer - USACE Gary Jordan - USFWS Travis Wilson - NCWRC Polly Lespinasse - NCDWQ Kathy Matthews - EPA Donnie Brew - FHWA David Harris - REU Cathy Houser - Roadway Betsy Cox - Structure JayMcInnis - PDEA Rachelle Beauregard - NEU . John Olinger - Division 8 10:00 Clawson R-4900, US 74 at NC 242 Intersection Columbus County, Division 6 Hydraulic Design Review (411) Team Members: Richard Spencer - USACE Gary Jordan - USFWS Travis Wilson - NCWRC Rob Ridings - NCDWQ Kathy Matthews - EPA Donnie Brew - FHWA David Harris - REU Roger Thomas - Roadway Omar Azizi -Structure Charles R. Cox - PDEA Chris Rivenbark - NEU Tracey Pittman - Division 6 'g," d f - J ? ss- ?r?F c 1. . 11:00 Clawson U-4007A, Jacksonville US 17 - White Street Extension Onslow County, Division 3 4B Hydraulic Design Review Team Members: Brad Shaver -USACE Gary Jordan - USFWS Travis Wilson - NCWRC David Wainwright - NCDWQ Kathy Matthews - EPA Steve Sollod - NCDCM Stephen Lane - NCDCM Donnie Brew - FHWA David Harris - REU Bryan Taylor - Roadway Omar Azizi - Structure Brian Yamamoto = PDEA Chris Rivenbark - NEU Joe Blair - Division 3 12:00 Lunch 1:00 Khaled AI-Akhdar R-2823, Rocky Mount Northern Connector. From SR 1,604 (Hunter Hill Rd) to US 301 Nash County, Division 4 . 4B Hydraulic Design Review Design/Build Project Team Members: William Wescott - USACE Gary Jordan - USFWS Travis Wilson - NCWRC Rob Ridings - NCDWQ Kathy Matthews - EPA Donnie Brew - FHWA Sarah McBride - SHPO David Harris - REU Lonnie Brooks - Structure Jay A. McInnis - PDEA Anne Gamber - Hydro Chris Rivenbark - NEU Wendy O. Johnson - Division 4 Rodger Rochelle - ADU Teresa Bruton - ADU 2:00 Adjourn 2