This project, which consists of an 11.3‐mile heavy-rail double-track construction that extends Metrorail service from the existing Orange Line at the East Falls Church station in Fairfax County, Virginia, to the Weihle Avenue station in Reston, Virginia, consists of aerial, underground, and at‐grade mainline track. The corridor encompasses Tysons Corner to Reston, and includes five passenger stations—four in Tysons Corner and one at Weihle Avenue in Reston. UTRS performed the following construction and testing:
- Installation and testing of cathodic protection for 50 underground pipelines and casings, including pipe joint bonding, installation of galvanic anodes, test stations, coupon reference electrodes, and supply of insulated joints and casing isolation materials
- Installation and testing of electrical continuity bonding and test stations for all reinforced concrete structures, including aerial structures, at-grade retaining walls, stations, tunnel and traction power substations. These installations include cast-iron test station boxes, studded test station connections along the aerial structure, bonding cables at contraction/expansion joints, and stray current drainage cables from structures to the traction power substations
- Simulated revenue and revenue testing of stray current activity along the right-of-way at locations previously identified in the baseline stray current study and new locations on the transit test facilities installed under this contract.
