I-581 Valley View Boulevard Interchange and Bridge
City of Roanoke, Virginia

Surveys, geotechnical analysis and preparation of construction documents for a new trumpet interchange on I-581 to serve major retail/commercial development and regional airport. Interchange and bridge were designed to accommodate future fourth lane and collector-distributor roads on I-581. The project included one mile of 4-lane divided approach roadway with curb, gutter, sidewalks and two new and one modified, interconnected signalized intersections. Project included pedestrian/bicycle facilities through the interchange, across the new bridge and connecting to future greenway along Lick Run on west side. A major stormwater detention basin was constructed in the trumpet loop. Basin served as a temporary sediment basin during construction to protect adjacent stream. Additional special erosion control measures were employed to protect Lick Run, which passes through downtown Roanoke. Limited construction administration services were provided.

The project was funded by the City of Roanoke, and reviewed, approved, advertised and constructed by VDOT. The project was performed under fast track methods, requiring only 18 months from surveys to completion of construction. Survey includes GPS, horizontal control, digital vertical control, photogrammetric control for low altitude helicopter photography and high altitude aerial photography, mapping and Digital Terrain Model (DTM) annotation, bridge situation survey, property research and right of way acquisition plats. Low altitude helicopter photography with extensive GPS and conventional field control was required for accuracy and crew safety. Project also involved participation in public meetings.

The project was completed at a total estimated cost of $5,000,000.

Founders Drive Street Repairs & Pedestrian Improvements
UNC at Asheville
Asheville, NC

Design of repairs to asphalt pavement and storm drainage system for Founders Drive on the UNCA campus. Mattern & Craig evaluated and designed repairs for approximately 2,900 feet of street that exhibited considerable pavement failure. Work also included adding approximately 1,000 feet of pedestrian sidewalk parallel to Founders Dr. to connect to the campus sidewalk system, and re-striping the street to accommodate a bike lane.  Limited assistance was provided to UNCA during bidding and construction.

Advance NC Traffic Design and Site Development 
West Jefferson, NC

Mattern & Craig provided complete surveying services and site design for the commercial development of a 4 acre site. Additional services include landscape design and traffic impact study and signal design. Project was completed in 2005 at a cost of $500,000.

TDOT - Traffic Signal Design at the
Intersection of East Center Street and Park Street
Sullivan County, TN

Mattern & Craig provided preliminary and construction plans for a traffic signal design at the intersection of East Center Street and Park Street in Kingsport. Included design of pedestrian signals with cross walks. Services were provided under a two-year Continuing Contract for Traffic Engineering Services for the Tennessee Department of Transportation. The contract included provision of statewide engineering services on various traffic and transportation projects.

CVS Traffic, Signalization & Site Development 
Northwest Properties Group, LLC 
Waynesville, NC

Mattern & Craig provided topographic and boundary survey and site design for a new 10,880 SF CVS. Services included a traffic impact analysis and subsequent signal design. Project was completed in 2004 at a cost of $390,000.

Route 58 6058-070-E21
Patrick County, VA

Complete class 1 bridge situation plan and metric surveys for road construction plans for dual-laning 8.4 km (5.2 miles) of two-lane roadway. Survey included horizontal and vertical control, photogrammetric control, mapping annotation, railroad survey, hydraulic survey for the Powell River crossing, property research and right of way plans.

Powder Branch Road
Elizabethton, TN

Right of way and construction plans for reconstruction of approximately 0.72 miles of roadway from 0.1 mile east of Happy Valley High School Drive to Elizabethton City Limits. Also included preparation of contract documents, bid documents and construction administration. Project completed at a cost of $1,000,000.

Brevard Closed Loop Signal System
Brevard, NC

Provided plans, specification, and estimate (PS&E) for a computerized closed loop signal system in Brevard, North Carolina. System included 20 signalized intersections and approximately 5 miles of fiber-optic communications cable interconnecting the signals into the system.

NCDOT - Operations Limited Services Agreement
Survey & Design
US 70 from NC 80 to SR 1197
McDowell County, NC

Right of Way (at selected locations) and preparation of construction ready plans (roadway, hydraulics, erosion control, and traffic control) to widen US 70 from a two-lane, shoulder cross-section to a three-lane, curb and gutter cross-section from NC 80 to SR 1197 in McDowell County.

Yorkshire Street Traffic Improvements
William Chambers, D.D.S., M.S., B.A.

Prepared a traffic impact study (TIS) to analyze the traffic impacts on the intersections of US 25 and I-40 eastbound off-ramp, US 25 and Yorkshire Street, US 25 and Vanderbilt Park, and US 25 and West Chapel Road as a result of continued development along Yorkshire Street in Asheville, NC.

NCDOT Operations Limited Services Agreement
Design - NC 163, from NC 16 to US 221

Prepared construction ready plans (roadway and erosion control) to widen and resurface NC 163 from NC 16 to US 221 in Ashe County. Also, prepared all of the contract documents to enable the NCDOT to advertise for bids.