SEPTA City Hall Station Renovation, Dilworth Plaza & 15th Street Platforms, Philadelphia, PA

Nave Newell performed 3D laser scanning of the 15th Street Market-Frankford Subway and 15th Street Subway Surface Line platforms and ceilings, interconnection corridors to Dilworth Plaza and City Hall Station and abandoned concourse rooms. The resulting 3D point clouds were shared with designers and Nave Newell generated multi-level 3D spatial models and 2D Existing Features/Topographic plans. The survey is being used by multiple disciplines for design of ADA-accessible stairways, access ways and platforms, new station entrances, elevator access from street and concourse levels to station platform level, and new ventilation shafts.


PATCO Transit Station Escalator Replacements, Camden, NJ and Philadelphia, PA

Nave Newell performed 3D laser scanning of several PATCO stations at the platform and concourse levels. From the scan data, Nave Newell generated accurate 3D spatial models and 2D Existing Features/Topographic plans of the current as-built conditions. The survey data was used by civil / site / structural / architectural and MEP disciplines for design of the new escalators and ancillary equipment from platform to concourse and street levels. Laser scanning the existing facilities saved considerable time and money to obtain the current conditions and accurate measurements while allowing for safe collection of the data without interference with the subway trains.


Amtrak/ARRA, Mobility First - Intercity Stations Project, PA & MD

As part of Amtrak’s plans to improve accessibility at stations throughout the country, Nave Newell was contracted under CVM Engineers to provide ADA evaluations and develop improvement plans for stations in MD & PA. The program was awarded $40 million in stimulus funds under the American Recovery and Reinvestment Act (ARRA) of 2009. Nave Newell completed ADA evaluations of the existing conditions for 7 Amtrak stations. Following the evaluation Nave Newell developed plans to implement ADA improvements to increase handicap accessibility between the platform and the train. The contract also included site development plans for a new station/shelter in Connellsville, PA. Review and design were completed under tight timelines in order to meet the Federal funding requirements for the project.


I-95 Section BRI, Philadelphia, PA

I-95 Section BRI is the next step in PennDOT’s initiative to reconstruct and improve Interstate 95 and its bridges and structures north of Center City Philadelphia. The project includes the reconstruction and widening of approximately one mile of I-95 and its shoulders and more than a dozen new bridges and ramps from the Bridge Street Interchange to the Betsy Ross Bridge/Aramingo Avenue Interchanges. Nave Newell utilized 3D laser scanning technology to survey the existing structures as part of the project’s preliminary engineering phase. The field data collected by Nave Newell included dimensions, elevations, grades and locations of existing features to be utilized in the design of roadway, structure and ramps improvements.

A combination of laser scanning technology and conventional survey methods best suited the DOT’s needs for this project. The key advantages to laser scanning were the significant reduction in the Maintenance and Protection of Traffic requirements, the increased safety of field crews and the reduction in delays to commuters as the scanning was done from the shoulder areas or at locations on private property. Laser scanning the interstate will provide the bridge engineering consultant, with an extremely high level of field detail to perform the structural design. The use of the laser scanner on I-95 will reduce project costs, improve roadway worker safety and mitigate the impact on the traveling public with the elimination of lane closures during field surveys. Ultimately, when complete, this reconstruction project will improve the traffic flow of an estimated 180,000 daily motorists.


I-95 Section AFC, Philadelphia, PA

As part of the widening of Interstate 95 reconstruction in Philadelphia, Nave Newell laser scanned the eight existing lanes along the north and southbound sides of the highway during the overnight hours. A combination of laser scanning technology and conventional survey methods best suited the DOT’s needs for this project. Two days of control survey collected 70 control points via conventional methods. 10 nights of laser scanning bridge decks along one mile of the interstate were needed to collect the necessary data and measurements. The key advantage to laser scanning was the significant reduction in the “Maintenance and Protection of Traffic” requirements as the scanning was done from the shoulder areas. Once the scanning was complete, 80 hours of data processing produced the eight bridge deck surfaces and two retaining wall models. Additional deliverables included a scan database, InRoads Digital Terrain Models and Control Survey Reports.

Laser scanning the interstate provided the bridge engineering consultant, Gannett Fleming, with an extremely high level of detail to perform the structural design, a surface DTM with exact tie-in information and accurate field data. The use of the laser scanner on I-95 reduced project costs; improved roadway worker safety and mitigated the impact on the traveling public with minimal lane closures.

SEPTA Carmel Interlocking, Glenside, Montgomery County, PA

Nave Newell surveyed approximately one mile of track from Wayne Junction to Glenside to create an accurate base plan for which new work could be superimposed. A combination of laser scanning technology and conventional survey methods best suited the owner’s needs for this project. One day of control survey was collected via conventional methods along with two weeks of laser scanning during the day and in the overnight hours during OOS (Out of Service) time. The project required data processing to develop a 3D model of the rail facilities. The model will be utilized by SEPTA’s Electrification & Traction department to locate new catenary wires and equipment. Additional deliverables included a scan database and AutoCAD base DGN files for both 2D topographics and 3D modeling. Laser scanning the rail facilities provided the client with a phenomenal level of detail, a versatile 3D model to be used during design and construction and a higher degree of confidence in the data than ever before.



AMTRAK Signal Bridge, Harrison Township, Hudson County, NJ

Amtrak planned to replace the signal bridge at milepost 7.90 in Harrison, NJ and needed as-built information for the existing structure. Nave Newell laser scanned the signal bridge to provide topographic information for 250 feet on both sides of the bridge, structural details for the signal bridge and the four closest catenary structures. Laser scanning technology best suited this project as it eliminated the need for track outages or foul time, and associated flagging and schedule delays that would be required for conventional survey. Nave Newell processed the scan data and provided elevations for the signal bridge and catenary structures. A site plan was also developed for structural and track elements. The plans developed from the HDS process assisted the client in the procurement and planning for the new signal bridge construction. The available scan data also assisted other Amtrak departments to integrate to their facilities to bring the new signal bridge on-line.



SEPTA R7 Levittown Station, Levittown Township, Bucks County, PA

Nave Newell laser scanned SEPTA’s R7 Regional Rail Levittown Station and surrounding roadways to provide Gannett Fleming with topographic plans and an existing conditions plan for design of a new station building, expansion of the parking facilities, construction of new roadway access to Rte. 13, construction of new high-level platforms and an underground pedestrian tunnel.

Nave Newell scanned over 2000 feet of track structure as well as the existing roadway network in and around the station to consolidate the lot and allow for safer vehicle circulation and more efficient bus and intermodal transfers. The 3D field data allowed Gannett Fleming too quickly and easily reference wire clearances, top of rail elevations for platform and canopy design and sign & billboard information reducing the cost of return field visits. Conventional survey and property research were also performed in support of the high-definition survey services.

Client: Gannett Fleming

Services: High-Definition Survey, Control Survey

We specialize in providing civil engineering, land surveying, land planning, and landscape architecture services to the communities within Chester County, PA; Delaware County, PA; Montgomery County, PA; Bucks County, PA; and the City of Philadelphia. Our portfolio also includes work throughout DE, MD, NJ, and VA.