The Maryland Transportation Authority will accept sealed bids Feb. 3 for approach painting and miscellaneous repairs on the Francis Scott Key Bridge, a 9,086-foot-long continuous steel bridge over the Patapsco River in Baltimore.
The structure, also known as the Key Bridge or the Outer Harbor Bridge, includes 25 approach spans with a total length of 6,443 feet and three truss spans with a total length of 2,643 feet.
The project involves cleaning and recoating all exposed fascia girders and bearings on the approach spans, as well as zone-painting interior girders and bearings within 10 feet of abutments and pier joints. The project also includes recoating four bearings at two piers in the truss span section.
The steel will be recoated with a penetrating sealer, an organic zinc-rich primer, an epoxy intermediate, and a urethane finish. The existing coatings contain lead; Class 2A containment according to SSPC-Guide 6 is required.
2 Key Bridges
The bridge is one of two with the same name in the Baltimore-Washington area. Scholars believe the Baltimore bridge crosses within 100 yards of the site where Francis Scott Key witnessed the bombardment of Fort McHenry on the evening of Sept. 12, 1814. That battle inspired Key to write the words of the Star Spangled Banner.
(The Baltimore span becomes so congested at times that locals have dubbed it the “Car Strangled Spanner.”)
In Washington, DC, another Francis Scott Key Bridge, a six-lane reinforced concrete arch bridge, connects the capital city with Arlington, VA, over the Potomac River.
Reported by Paint BidTracker, a construction reporting service devoted to identifying contracting opportunities for the coatings community.