Roadway Improvements at Dulles Airport

JMT designed improvements for the Washington Dulles International Airport Access Highway (Dulles Toll Road), as well as for various other Airport roads located on the Airport property to accommodate the predicted growth in traffic volumes associated with projected passenger growth to 45 million annual passengers.

Relevant tasks performed included:

Pavement Management System: Pavement inspection and developed a pavement management system for the Dulles Toll Road. The system included the development of a pavement management system using Micropaver and the development of recommendations for short- and long-term pavement repairs.

Aviation Drive Widening: Design of a two-lane widening of Aviation and Cargo Drives in order to increase traffic capacity on this important commercial circulation roadway. This project included traffic studies, traffic modeling and simulation, highway design, a two-lane bridge widening including foundation and pier design, drainage, SPPP plans, signage, pavement marking, lighting, utility relocations, signal design, and maintenance of traffic during construction.

North Area Roads, South Section Concept Study: Design of the roadways, ramps, and bridges on the Dulles Toll Road. This assignment involved the conceptual design of new collector-distributor roads including nine bridges and 13 ramps. Detailed traffic models and simulations were prepared to demonstrate operational effectiveness of the concepts studied.

North Area Roads, South Section, Phase 2 – 25 MAP: Design of a portion of the improvements identified in the North Area Roads Concept Study. This project included highway and ramp design, design of two new bridges and one bridge widening, retaining walls, box culvert and sign structure design, design of NAVAIDS, drainage, stormwater management, erosion and sediment control, VDOT coordination, signing, lighting and pavement marking as well as maintenance of traffic plans for a complicated construction phasing scheme.

North Area Roads, South Section, Phase 3 – 35 MAP: Design of additional improvements to the roadway network created by the Phase 2 project to facilitate increases in traffic to 35 million annual passengers. The design included highway and ramp design, the design of three new bridges (including one flyover ramp) and two bridge widenings, retaining walls, and sign structure design, drainage, stormwater management, erosion and sediment control, VDOT coordination, signing, lighting, and pavement marking as well as maintenance of traffic plans for a complicated construction phasing scheme.

Roadway Signage Replacement, Phase 2: Performed concept study and subsequent final design of $0.6 million of new roadway guide signs for the Dulles Airport campus between Route 28 and the Terminal. Sign concepts were coordinated with a parallel sign study performed by another consultant. The project opened just before the busy travel Thanksgiving holiday weekend.

Dulles Toll Road Corridor Photogrammetry and GIS Mapping: New aerial photogrammetry for the entire Dulles Toll Road corridor and processed the data collected into orthorectified CADD and GIS formats for use by MWAA for planning and design projects.

Sound Wall Condition Inspection and Repairs: Structural condition inspection of 10 existing sound walls totaling approximately 40,000 feet in length. The inspection also included condition assessment and the development of plans for the repair and/or replacement of seven sound walls.

JMT continues a long-standing relationship with MWAA by providing much-needed roadway improvements to help the Dulles area support additional traffic.