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Union Station Tunnel Structural Repairs

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Modjeski and Masters was contracted to develop load capacity ratings for select members of the Union Station Tunnel as a result of the annual systemwide inspection findings. Ratings account for the current live load conditions above the various sections of the tunnel, including parking lot, pedestrian, and excursion track loading. 

Metro requested design and construction services to install repairs under five different repair contracts. M&M has designed repairs and developed contract plans and specifications as required for each contract. Repairs include shoring of the north and south abutments, shoring of the NE Bay Room, steel column encasements, partial deck replacement with precast hollow core deck panels in one bay, and various steel girder and column repairs.

M&M has provided construction services for each of the contracts which include review of RFIs and shop drawings, on-site construction oversight, and daily reporting.

Bridge Geometry
Total Length 1,055 feet
Tracks Serviced 2 tracks

M&M’s staff are very knowledgeable and have helped guide BSD/Metro through a very difficult project design.  The project has had numerous changes and M&M has been a huge help in developing revised designs on a very constrained schedule.  Their structural design knowledge/staff is some of the best in the region.        

-Tim Nittler, Director of Capital Projects