20051764 Ver 1_Meeting Minutes_20011212

CONCURRENCE MEETING
December 12, 2001
PURPOSE & NEED STATEMENT, DESIGN
CONSIDERATIONS, UPGRADE CORRIDOR
ProQosed Widening of SR 1158 (Airport Blvd.) to a multi-lane facility, from NC 42
to US 264, Wilson County
State Project 8.2341801
Federal Aid Project STP-1158(2)
TIP Project U-3823
Introduction
The North Carolina Department of Transportation (NCDOT) 2002-2008
Transportation Improvement Program (TIP) includes a project to widen SR 1158 (Airport
Blvd.) from NC 42 to US 264 in Wilson County (see Figure 1). Studies are underway in
accordance with the National Environmental Policy Act (NEPA) of 1969, as amended.
Concurrence Point No. 1 of the NEPA/404 Merger Process, developing the purpose and
need of the proposed action, should justify why the improvement must be implemented.
Concurrence Point No. 2 is agreement of design considerations. Concurrence Point No. 3
is the upgrade corridor selection.
Project Description
SR 1158 (Airport Blvd.) connects US 264 and NC 42. US 264 is a four-lane
divided facility that functions as an east-west radial serving traffic travelling into and
through the Wilson area. NC 42 also serves as an east-west radial It is currently being
upgraded to a four-lane divided facility as part of TIP U-3472. Merck Road connects
with Airport Blvd approximately halfway between US 264 and NC 42. SR 1158 (Airport
Blvd.) is currently a 2-lane facility approximately 2 miles in length. TIP project U-3823
proposes to widen the two-lane section to five-lanes with curb and gutter, except for a
section in the vicinity of Bloomery Swamp, which will be widened to four-lanes. A
typical section is attached (see Figure 2).
Capacity of Existing Roadway
Just to the north of Merck Rd. on Airport Blvd., Heritage Place, a development
approximately 600 acres in size, is planned for construction. The proposed subdivision is
a mixed-use development containing a large amount of residential and commercial
properties. This development will be spread among the four quadrants of the US-264 and

SR 1158 (Airport Blvd.) intersection. A residential component will be located between
the railroad tracks and Bloomery Swamp. The original traffic forecast was completed in
February 2000 but did not take into consideration the trips created by this new
development.
Current year (2000) daily traffic volumes along SR 1158 (Airport Blvd.) range
from 4,000-4,500 vehicles per day (see Figure 3). By the design year (2025), traffic
volumes along SR 1158 (Airport Blvd.) are expected to range between 21,600-22,000
vehicles per day (see Figure 4).
A capacity analysis was completed for the project. Analysis for the design year
indicates that with the existing two-lane section, Level of Service (LOS) would be F in
the design year (2025). The proposed five-lane section would provide LOS B at the SR
1158 (Airport Blvd.)/Merck Rd. intersection in the design year (2025) (see Figure 5).
Likewise, the SR 1158 (Airport Blvd.)/US 264 intersection would experience a LOS D in
the design year (2025) with the proposed five-lane section (see Figure 6).
Project Purpose
The purpose of the project is to improve capacity and improve safety along this
section of SR 1158 (Airport Boulevard).
Project Need
^ Approximately 21,600-22,000 vehicles a day will pass along SR l I58 (Airport
Blvd.), resulting in a LOS F in the design year (2025).
Total accident rates for SR 1158 in the study area are 3.6 times higher than the
statewide accident rates for two-lane rural secondary routes.
Accident rates for this section of SR 1158 (Airport Blvd.) were obtained for the
period between September 1996- August 1999. The table below compares the total
accident rates for SR 1158 (Airport Blvd.) with the statewide total accident rates for two-
lane and four-lane+ SR routes.
Table 1
September 1996 -August 1999
Total Accident Rates Comparison
Total Accident Rate (ACC/100MVM)
SR 1158 (Airport Blvd.) 938.6
Statewide Average Two-Lane Rural 261.9
Secondary Routes (1996-1998)
Statewide Average Four-Lane+ 247.5
Continuous Left Turn Lane Urban
Secondary Routes (1996-1998)
2

Between September 1996 and August 1999, 84 total accidents occurred along SR
1.158 (Airport Blvd). As Table 1 shows, the total accident rate along this section of SR
1158 (Airport Blvd.) is over three times the statewide total accident rate for rural two-
lane secondary routes. None of the accidents that occurred resulted in fatalities, however
88 people were injured and $452,195 in property damage occurred due to the accidents.
Project Schedule/Cost
The project scoping meeting was held on February 28, 2000. A citizen
informational workshop was held on June 27, 2000. Detailed environmental studies have
been completed.
Right-of way acquisition for the project is scheduled to being in federal fiscal year
2003 and construction is scheduled to begin in federal fiscal year 2004.
The most recent cost estimates for the project are as follows:
TIP estimate Current estimate
Construction $ 6,300,000 Construction $5,650,000
Right of Way $ 1,200,000 Right of Way $1,200,000
Total: $ 7,500,000 Total: $6,850,000
Project Alternatives
During the field visit, the Division of Water Quality requested that we replace the
existing five barrel 12-foot by 7-foot reinforced concrete box culvert at Bloomery Swamp
with a bridge that spans the entire wetlands in the area. This would require a grade
separated crossing of the railroad tracks at the north-east side of the swamp. Since the
wetlands to the north-west side of Airport Boulevard have been determined to be of high-
qualiry, NCDOT is committed to looking at the reasonableness and feasibility of bridging
in this area. It should be noted that the Hydraulics Branch recommends extending the
existing culvert. Hydraulic analysis indicates that the existing culvert passes the 100-year
flood with no overtopping. Note: references below to wetlands restored are referring to
areas underneath the proposed bridges that are now filled, .but have the potential to be
converted back to the wetlands originally located there.
1. No-build
The no-build alternative would not meet the purpose of the project because it
would not improve capacity or safety along this section of SR 1158 (Airport Blvd.)

2. Alternate Modes of Transportation
Considering the size and location of Wilson, alternate modes of transportation are
not considered viable alternatives for the project. Implementation of passenger rail
service and/or implementation of bus service in the project area would not meet the
purpose of the project.
3. Widening to S lanes and extend existing culvert over Bloomery Swamp
This alternative would widen the existing roadway to a five-lane facility with curb
and gutter. The horizontal cross section would be reduced to four lanes in the vicinity of
Bloomery Swamp to minimize impacts to wetlands. A sealed crossing would be installed
at the railroad crossing, including gates, signal flashers, and a monolithic concrete barrier
installed in the median leading up to the crossing. The existing five-barrel culvert at
Bloomery Swamp would be extended. This alternative would impact approximately 0.73
acres of wetlands. The estimated construction cost is $5,650,000. This alternative can be
seen in Figure 7.
4. Widening to 5 lanes and construct bridge spanning entire wetlands at Bloomery
Swamp
This alternative as requested by the Division of Water Quality would widen the
existing roadway to a five-lane facility with curb and gutter, but construct a bridge
approximately 1800 feet in length spanning the entire wetlands in the vicinity of
Bloomery Swamp. The bridge would consist of four-lanes. A grade separated crossing
of the railroad would be necessary. This alternative would restore approximately 2.08
acres of wetlands. The estimated construction cost is $13,200,000. This alternative can
be seen in Figure 8.
5. Widening to 5 lanes and construct bridge spanning wetlands up to railroad
crossing
This alternative would widen the existing roadway to a five-lane facility with curb
and gutter. The horizontal cross section would be reduced to four lanes in the vicinity of
Bloomery Swamp to minimize impacts to wetlands. A sealed crossing would be installed
at the railroad crossing, including gates, signal flashers, and a monolithic concrete barrier
installed in the median leading up to the crossing. Abridge would be constructed
approximately 1050 feet in length spanning the wetlands up to the railroad crossing.
Approximately 0.24 acres of wetlands would be impacted and 1.37 acres of wetlands
would be restored. The estimated construction cost is $10,300,000. This alternative can
be seen in Figure 9.
4

6. Widening to 5 lanes and construct bridge designed to reciprocate the wetlands
impacted with wetlands restored
This alternative would widen the existing roadway to a five-lane facility with curb
and gutter, and afour-lane section in the vicinity of Bloomery Swamp. A sealed crossing
would be installed at the railroad crossing, including gates, signal flashers, and a
monolithic concrete barrier installed in the median leading up to the crossing. A
proposed bridge length of 475 feet would restore approximately the same amount of
wetlands as would be impacted by the fill. Approximately 0.60 acres of wetlands would
be impacted and 0.60 acres of wetlands would be restored. The estimated construction
cost is $7,800,000. This alternative can be seen in Figure 10.
TABLE 2
BRIDGING ALTERNATIVE COMPARISONS
Extend Culvert Reciprocal Bridge up to Bridge Entire
Wetland Railroad Wetlands
Impacts Crossing
RESIDENTIAL
RELOCATEES 0-1 0-1 0-1 0-1
BUSINESS
RELOCATEES 0 0 0 0
WETLANDS
IMPACTED (AC.) -0.73 -.60 -0.24 0
WETLANDS
RESTORED (AC.) 0 +.60 +1.37 +2.08
NET WETLAND
EFFECTS (AC.) -0.73 0 +1.13 +2.08
BRIDGE LENGTH
(FT.) N/A 475 1050 1800
CONSTRUCTION
COST $5,650,000 $7,800,000 $10,300,000 $13,200,000
NCDOT routinely purchases wetland credits from the Wetland Restoration
Program administered by DWQ. Riverine wetlands impacted are mitigated at a cost of
($24,000 x 2) _ $48,000/acre. Buffer zone impacts (other than wetland impacts) within
zone 1 are mitigated at a cost of ($43,000 x 3) _ $129,000/acre and zone 2 is ($43,000 x
1.5) _ $64,500/acre. Considering the amount of wetlands impacted by this project (0.73
acres), even the reciprocal bridging of Bloomery Swamp can not be considered to be cost
effective when compared to the amount of riverine wetland acres that could be purchased
for the increased construction cost of bridging ($2,150,000/$48,000/acre) = 44.8 acres.
Viewed in another way, the total cost of saving 0.73 acres of wetlands with this
alternative is ($2,150,000/0.73 acres) _ $2,945,205/acre.
NCDOT is currently working with an Ecological Enhancement Committee along
with several resource agencies to devise a system for applying ecological enhancement to
transportation projects. This ecological enhancement system will not be in place in the

near-term, at least. Until such time as it is, NCDOT will consider bridging high quality
wetlands on a case-by-case basis. Items to be taken into consideration are the site-
specific characteristics of the wetland, the costs, and the surrounding region.
6

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NORTH CAROLINA DEPARTMENT OF
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j PROJECT DEVELOPMENT AND
•••'' ENVIRONMENTAL ANALYSIS BRANCH
VICINITY MAP
SR 1158( AIRRORT BtVL? 'j FROM NC
42 WEST TU US 264
WILSON COUNTY
TIP PROJECT U-3823
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~'' ESTIMATED 2000 ADT'S
~ WIDENING OF SR-1158 FROM
NC-42 WEST OF US-264
WILSON COUNTY
W. Smdhson August 2000 Sheet 1 of 2
Statawlda Piannlny Branch
Division of Planning 6 Envlronmant
No-th Carolina Dapartmant o! Tranaportation
US-264
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SR-1157
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ESTIMATED 2025 ADT'S
WIDENING OF SR-1158 FROM
NC-42 WEST OF US-264
WILSON COUNTY
W. Smdhson August 2000 Sheet 2 012
Statow/da Planning 8raneh
Divlslort of Planning ~ Envlronmant
North Carolina Dapartmont of Transportation
US-264
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