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    • Bridge & Structural BearingsInnovative bridge and structural bearings designed for iconic feats of civil engineering.
      • High Load Multi-Rotational Disk Bearings
      • Seismic Isolation Bearings
      • Uplift Bridge Bearings
      • POD Bridge Bearings
      • Spherical Bearings
    • Expansion JointsAccommodate naturally occurring movement with high-quality, long-lasting expansion joints.
      • Silicoflex Joint Sealing System
      • Poly-Tron Elastomeric Concrete
      • RJW Finger Joints
  • Services
    • TestingTest bearings, expansion joints and other structural components in our state-of-the-art facility.
    • Design ServicesNo cost, no obligation design services.
    • PDH CoursesFree Professional Engineering continuing education.
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    • Lunch and LearnEarn professional development hours with RJ Watson.
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Dulles Corridor Metrorail Phase 1

Disktron Bearings | RJ Watson
Disktron Bearings | RJ Watson
Disktron Bearings | RJ Watson

Disktron Bearings | RJ Watson
Disktron Bearings | RJ Watson
Disktron Bearings | RJ Watson

Disktron Bearings | RJ Watson
Disktron Bearings | RJ Watson
Disktron Bearings | RJ Watson

Project Description

The Dulles Corridor Metrorail Project is a two-phase, 23 mile extension of the existing 106 mile Washington DC Metro Rail System. This segment will connect the existing system in Northern Virginia to Dulles Airport when completed. The first phase is 11.6 miles of track and features 3 miles of aerial guideway. The prime contractor is Dulles Transit Partners which is a joint venture of Bechtel and URS. The bulk of this guideway was constructed of segmental concrete sections resting on high load multirotational bearings provided by R. J. Watson, Inc. In total there were 1294 bearings manufactured for this project consisting of 1254 Disktron Bearings varying from 115 to 610 Kips in vertical capacity. The balance of the bearings were RJW Spherical bearings with load capacities of 490 to 960 Kips. The bearings were designed for horizontal loads of 10 to 15% of the vertical load with a rotational capacity of +/- 0.02 radians. All bearings were designed with bolted connections for ease of replacement and were constructed as 15 separate drawing packages over a two year period. R. J. Watson bearings were chosen for their simplistic design, superior performance and ease of installation capabilities.

Project Team:

Prime Contractor: Dulles Transit Partners

Bearings: RJ Watson Inc

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