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Francis Scott Key Bridge

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Francis Scott Key Bridge

View from Fort Armistead Park

By Jeremy Smith [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

License: Creative Commons Attribution-Share-Alike (CC BY-SA)

View this photo at upload.wikimedia.org

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Description 

From Wikipedia: In the 1960s, the Maryland Transportation Authority concluded there was a need for a second harbor crossing and began planning a single-tube tunnel under the Patapsco River, downstream from the Harbor Tunnel. The proposed site was between Hawkins Point and Sollers Point. Plans also were underway for a drawbridge over Curtis Creek to connect Hawkins Point to Sollers Point.

Contractors took borings of the harbor bottom in the spring of 1969. Bids for construction of the proposed tunnel were opened on July 30, 1970, but price proposals were substantially higher than the engineering estimates. Officials drafted alternative plans, including the concept of a four-lane bridge. Key Bridge with Baltimore in background, viewed from Cox Creek Industrial Park, November 2011

The bridge, at an estimated cost of $110 (USD) million, represented the best alternative because it allowed for more traffic lanes and carried lower operating and maintenance costs than a tunnel. In addition, a bridge would provide a route across the Baltimore Harbor for vehicles transporting hazardous materials (these materials are prohibited from both the Baltimore Harbor and Fort McHenry tunnels).

Construction began in 1972, and the bridge opened to traffic on March 23, 1977. Including its connecting approaches, the bridge project is 10.9 miles (17.54 km) in length. Other structures along the thruway include a 0.64-mile (1.03 km) dual-span drawbridge over Curtis Creek and two 0.74-mile (1.19 km) parallel bridge structures that carry traffic over Bear Creek, near the former Bethlehem Steel Sparrows Point plant, this portion of the project not being fully complete until the late 1990s.

Located in an area rich with American history, scholars believe the span crosses within 100 yards (91 m) of the site, marked in the water off the bridge by a stars and striped painted buoy, where Francis Scott Key witnessed the bombardment of Fort McHenry on the evening of September 12, 1814. That battle inspired Key to write the words of the Star Spangled Banner. Located just southeast of the bridge are the ruins of Fort Carroll.

Facts 

Overview
Steel through arch bridge over Patapsco River/Baltimore Harbor on Maryland Route 695 (Interstate 695)
Location
Baltimore, Maryland, and Baltimore County, Maryland
Status
Open to traffic
History
Built 1976
Design
Steel through continuous truss arch
Dimensions
Length of largest span: 1,200.2 ft.
Total length: 9,091.3 ft. (1.7 mi.)
Deck width: 58.1 ft.
Approximate latitude, longitude
+39.21667, -76.52833   (decimal degrees)
39°13'00" N, 76°31'42" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/368060/4341933 (zone/easting/northing)
Quadrangle map:
Curtis Bay
Inventory number
BH 60946 (Bridgehunter.com ID)
Inspection (as of 05/2015)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 65.8 (out of 100)
Average daily traffic (as of 2013)
29,010

Update Log 

  • August 9, 2017: New photo from Mike Singer
  • November 24, 2014: New Street View added by Alexander D. Mitchell IV
  • May 12, 2014: Added by Alexander D. Mitchell IV